JP6074378B2 - Expansion device replacement method and temporary lining plate structure - Google Patents

Description

  The present invention relates to a replacement method (construction method) of an expansion joint (expansion device) in an elevated road, an expressway, a bridge, etc. (hereinafter referred to as “elevated road”) and a temporary lining plate structure thereof.

  There are various types of elevated roads. Since the concrete floor slab expands and contracts depending on the environmental temperature of the installation location, as shown in FIGS. 44 and 45, the concrete floor slab B is arranged on a plurality of main girders (I-shaped steel in these drawings) A, An expansion / contraction device C is installed between the concrete floor slabs B so that the expansion and contraction of the concrete floor slab B and the main girder A can be accommodated (absorption of expansion / contraction). The telescopic device C is not necessarily arranged between the concrete floor slabs B on the main girder A as shown in FIGS. 44 and 45. As shown in FIG. 47, the steel floor slab on the abutment G or It may be arranged between the concrete floor slab (abutment side floor slab) H and the concrete floor slab B above the main girder A.

  The expansion / contraction device C includes various materials such as steel and rubber, and includes various structures including a finger type. The expansion device C shown in FIG. 46 is a finger-type expansion device, and a large number of fingers D protrude from the face plate E, and the concrete F is post-placed between the concrete floor slab B and the expansion device C. It is packed.

  The connection structure of the main girder A and the concrete floor slab B includes a composite girder structure (hereinafter simply referred to as a “composite girder”), and the connection is not as strong (soft) as the composite girder. ) There is a non-synthetic digit structure (hereinafter simply referred to as “non-synthetic digit”).

  The expansion and contraction device of the elevated road is periodically replaced once every several decades (usually 20 years). In order to replace the expansion and contraction device C arranged between the concrete floor slabs B as shown in FIGS. 44 and 45, conventionally, the pavement on the concrete floor slab B is peeled off and expanded and contracted. The concrete floor slab B on both sides of the device C is removed, then the existing expansion device C is removed, a new expansion device is installed in the space of the removal, and the concrete between the new expansion device and the concrete floor slab B on both sides is removed. Has been postponed. As shown in FIG. 47, when the expansion / contraction device C disposed between the abutment side floor slab H and the concrete floor slab B on the main girder is replaced, it is also replaced in the same manner as described above.

The conventional telescopic device replacement method has the following difficulties.
1. Vibration and noise are generated during the work, which can be annoying to the neighborhood.
2. The construction period (construction period) is long, and during that time, traffic regulation (blocking of cars) must be made, which will increase the impact on the surrounding environment and traffic, increase regulation costs, and reduce tolls.
3. Once the work on the concrete on the bridge surface is started, the work cannot be interrupted and traffic control must be performed until the construction is completed.

  In order to eliminate the disadvantages, conventionally, there are a construction method in which the expansion / contraction device itself is easily replaced (Patent Documents 1 and 2) and a construction method (Patent Document 3) in which the replacement is easy although it is a rubber expansion / contraction device. However, the above-mentioned difficulty is not solved by these extension devices and construction methods. These telescopic devices are relatively small in scale.

Japanese Patent Laid-Open No. 5-148811 JP 2001-107303 A Japanese Patent No. 3968380

  The subject of the present invention can also be applied to a structure including a steel telescopic device having a relatively large scale than the telescopic device shown in the patent document, considering the adverse effects on the surrounding environment and traffic, and relatively quiet at night. However, it is to propose a replacement method for an expansion / contraction device that can be constructed and can open daytime traffic (regulation release) that increases traffic, and a temporary lining plate structure during the construction.

  The expansion / contraction device replacement method of the present invention can be applied to either a composite digit or a non-synthetic digit, but in the following description, the case of a non-synthetic digit will be described first, and then the case of a composite digit will be described. The method for replacing the expansion device of the present invention is not only capable of replacing the expansion device disposed between the concrete floor slabs on the main girder, but also the floor slab on the abutment (concrete floor slab or steel floor slab). It is also possible to replace the expansion device placed between the concrete floor slab on the main girder, but the following explanation is for replacing the expansion device arranged between the concrete floor slabs on the main girder .

  Usually, pavement is constructed on the concrete floor slab. The replacement method of the expansion / contraction apparatus of the present invention can be performed after the pavement is peeled off or without being peeled off. However, the following description is a case where the pavement is not peeled off.

  In this invention, the thing made from various materials and a structure can be used for the new expansion / contraction apparatus installed instead of the existing expansion / contraction apparatus. The following explanation is for the case of using the one provided with precast concrete on the left and right of the expansion / contraction device (expansion device with precast concrete) and the case using the one without precast concrete (extension device without precast concrete). The case where the expansion device with precast concrete is used is called “partial precast concrete construction”, and the case where the expansion device without precast concrete is used is called “cast-in-place concrete construction”. Precast is not a site, but a structure that precedes the site in a factory or yard. This leads to labor saving at the site and enables rapid construction.

[Extension device replacement method 1: Non-synthetic girders, partially precast concrete construction]
This expansion / contraction device replacement method is a non-synthetic girder where the existing expansion / contraction device has a structure including two expansion / contraction members, and a new expansion / contraction device with precast concrete is used. The replacement can be performed by the operations shown in the following (1) to (8).

(1) Cutting concrete floor slab or existing pavement and existing concrete floor slab to removal side and remaining side (2) Removal side concrete floor slab from main girder or removal side pavement and removal side concrete floor slab , Separation and removal of existing expansion and contraction device (3) Installation of temporary lining plate in the removal trace space (4) Installation of joints on the remaining concrete floor slab. This is done under a temporary lining plate.
(5) Removal of temporary lining plate (6) Installation of new expansion / contraction device with precast concrete in the removal trace space (7) Reinforcement to joint of remaining side concrete floor slab and joint of new expansion / contraction device, said reinforcement Forming between the remaining side concrete floor slab and the precast concrete of the new expansion / contraction device (8) Placing concrete into the mold and curing.

[Extension device replacement method 2: Non-synthetic girders, cast-in-place concrete construction]
This expansion / contraction device replacement method is a case of a non-synthetic girder and a case where a new expansion / contraction device without precast concrete is used. The procedure is the same as (1) to (3), (5), and (8) among the operations of (1) to (8) of the replacement method 1 of the expansion / contraction device, and the different (4), The operations (6) and (7) are as follows.

1. Instead of installing the joint to the remaining side concrete floor slab of (4), the anchor (rebar) in the remaining side concrete floor slab is projected (exposed) on the side surface of the concrete floor slab, A joint (for example, a mechanical type) is connected to the anchor.
2. In the installation of the new extension device (6), the extension device without precast concrete is installed.
3. In the bar arrangement and formwork installation of (7), bar arrangement is made at the joint of the anchor in the remaining concrete floor slab and the newly installed expansion device without precast concrete. A formwork is installed outside the bar arrangement and between the new expansion and contraction device and the remaining concrete floor slab.

  The replacement methods for the first and second telescopic devices can also be performed as follows.

  In the method for replacing the telescopic device, at least before the work described in (6), the main girder upper flange can be drilled. The purpose of this drilling is a structure in which a stopper, for example, a stud bolt, which is combined with concrete so that the next expansion / contraction device can be easily replaced, is inserted from below the main girder flange with a nut.

  The temporary lining plate in the replacement method of the expansion device can be a temporary lining plate with temporary pavement or a temporary lining plate without temporary pavement. (3) In the case of a temporary lining plate without temporary paving after the work described in the above, temporary paving is performed after the installation. In any case, in removing the temporary lining plate of (5), the temporary paving is also removed at the same time.

  In the replacement method of the expansion / contraction device, after the operation (1), a bonding material is straddled on the two expansion / contraction members of the expansion / contraction device, the bonding material and the both expansion / contraction members are temporarily bonded, and the bonding material A removal beam is installed and fixed on the surface, and the joint material and the removal side concrete floor slab, or the removal side pavement and the removal side concrete floor slab are integrated with the expansion device. Thereafter, the removal work described in (2) can be performed. In this removal operation, the removal-side concrete floor slab or the removal-side pavement and the removal-side concrete floor slab and the existing expansion / contraction device can be integrally peeled and removed from the main girder by lifting or pushing up the removal beam. The removal beam may be jacked or unjacked. In the case with a jack, the removal side pavement and the removal side concrete floor slab described in the above (2) can be removed by pushing up the removal beam by operating the jack (jacking up). If it is not equipped with a jack, the removal beam can be lifted with a crane to remove the removal side pavement and the removal side concrete slab.

[Extension Device Replacement Method 3: Composite Girder, Partial Precast Concrete Construction]
This replacement method of the expansion / contraction device is a case of a composite girder and a case where a new expansion / contraction device with precast concrete is used. The replacement can be performed by the operations shown in the following (1) to (11).

(1) Drilling in the main girder web (2) Cutting the main girder to the removal side and the remaining side, and attaching the attachment plate to the remaining side and removal side main girder across the main girder cutting point (3) Cutting concrete floor slab or pavement and concrete floor slab to removal side and remaining side (4) Removal side main girder and removal side concrete floor slab after removing attachment plate , Removal of pavement on the removal side and concrete floor slab on the removal side and the existing expansion / contraction device (5) Installation of the new main girder in the main girder removal space and final fastening of the new main girder to the remaining main girder (6) Existing expansion / contraction device and removal side concrete floor slab, or installation of temporary lining plate in removal space of removal side pavement and removal side concrete floor slab and temporary fixing to new main girder (7) Remaining side concrete floor slab (8) Removal of temporary lining plate (9) Preliminary space for removal of temporary lining plate Installation of new expansion and contraction device with strike concrete (10) Reinforcement to the joint of the remaining concrete floor slab and the joint of the new expansion device, precast concrete of the remaining side concrete floor slab and the new expansion device (11) Placing concrete into the mold and curing it.

  The operations (1), (2), and (7) can be performed under a temporary lining plate when traffic is released. The integral removal of (4) can be performed by various methods. For example, the removal beam is installed on the expansion joint and the removal side pavement and connected thereto, and the removal beam is pushed up or lifted. The integral removal can be performed. Again, the removal beam may be jacked or unjacked. When the jack is attached, the removal beam is pushed up by operating the jack (jacking up). When the jack is not attached, the removal beam or the cut floor slab is directly lifted by the crane, and the removal side pavement and the removal side concrete The floor slab and the removal main girder can be removed. In this case as well, the bonding material is straddled on the two expansion members of the expansion device, the bonding material and the both expansion members are temporarily bonded, and a removal beam is installed and fixed on the bonding material. The material, the removal side concrete floor slab, or the removal side pavement and the removal side concrete floor slab are integrated with the expansion device. Thereafter, the removal work described in (4) can be performed.

[Extension Device Replacement Method 4: Composite Girder, Cast-in-place Concrete Construction]
This expansion / contraction device replacement method is a composite girder and uses a new expansion / contraction device without precast concrete. The procedure is the same as (1) to (6), (8), and (11) among the operations (1) to (11) in the replacement method 4 of the expansion / contraction device, and the procedures are different (7), The operations (9) and (10) are as follows.

1. Instead of installing the joint to the remaining side concrete floor slab in (7) above, the anchor in the remaining side concrete floor slab is projected (exposed) to the side surface of the concrete floor slab, and the anchor Connect joints (for example, mechanical ones).
2. In the installation of the new expansion / contraction apparatus of (9), the expansion / contraction apparatus without precast concrete is installed.
3. In the bar arrangement and formwork installation of (10), bar arrangement is performed on the joint provided in the anchor in the remaining-side concrete slab and the newly installed expansion device without precast concrete. A formwork is installed outside the bar arrangement and between the new expansion and contraction device and the remaining concrete floor slab.

  The replacement methods for the expansion devices 3 and 4 can also be performed as follows.

  In the above-described method for replacing the telescopic device, at least before the work described in (5), it is possible to make a hole in the main girder upper flange. The purpose of this drilling is a structure that attaches to the existing main girder upper flange and a stopper that joins with concrete so that the next expansion and contraction device can be easily replaced, for example, a stud bolt is inserted from the bottom of the main girder flange and is fastened with a nut. .

  The temporary lining plate in the replacement method of the expansion device can be a temporary lining plate with temporary pavement or a temporary lining plate without temporary pavement. (6) In the case of a temporary lining plate without temporary paving after the operation described in the above, temporary paving is performed after the installation. In either case, the temporary pavement is also removed at the same time in the integral removal operation (4).

  In the replacement method of the extension device, at least before the operation described in (4), the removal side concrete floor slab or the removal side pavement and the removal beam are installed and fixed on the existing extension device, and then ( 4) The removal work described in the above is performed, and the removal work is performed by lifting or pushing up the removal beam, the removal-side concrete floor slab, or the removal-side pavement and the removal-side concrete floor slab, the existing telescopic device and the removal-side main girder. Can be peeled off and removed.

  The expansion device replacement methods 1 to 4 can also be applied to replacement of the expansion device C disposed in the vicinity of the abutment G (on the abutment G) as shown in FIG. In this case, a part of the replacement work can be omitted or another work can be added as necessary.

[Temporary lining plate structure 1: non-synthetic girders]
The temporary lining plate structure of the present invention is a temporary lining plate structure during replacement of a non-synthetic girder expansion device, and the removal side concrete floor slab, or removal side pavement and removal side concrete floor slab, and removal of the existing expansion device A temporary lining plate with or without temporary pavement is installed in the trace space, the removal trace space is closed, and the temporary lining plate can be attached to and detached from the existing main girder using bolts and other connectors (stoppers) It is a structure that allows the vehicle to pass therethrough with a structure that is temporarily fixed to. In this case, a work space that enables work from below the road surface is secured under the temporary lining plate. Various structures and shapes can be used for the temporary lining plate, but at least the shape and size of the closing plate that can close the removal trace space, and the connecting part that can temporarily fix the closing plate to the remaining main girder It has. It is desirable that the lower surface of the closing plate is aligned with the same height (including substantially the same: the same below) as the upper surface of the remaining concrete floor slab.

[Temporary lining plate structure 2: Composite girder]
The temporary lining plate structure of the present invention is a temporary lining plate structure during replacement of the expansion and contraction device of the composite girder, and a new main girder is installed in the removal trace space of the removal trace main girder. The attachment plate is assigned to the girders across the cutting point and connected and fixed to the new main girder and the remaining main girder, and the removal side concrete floor slab, or the removal side pavement and removal side concrete floor slab, and the existing telescopic device Temporary pavement plate with or without temporary pavement is installed on the new main girder and fixed with bolts or other connectors (stoppers), and the removal trace space is closed. The construction plate has a structure in which the construction plate is temporarily fixed to the newly installed main girder so that the vehicle can pass therethrough. Also in this case, a work space that enables work from below the road surface is secured under the temporary lining plate. Various structures and shapes of the temporary lining plate can be used, but the same structure and shape as the temporary lining plate in the temporary lining plate structure 1 can be used. The bottom surface of the closing plate is preferably aligned with the same height as the top surface of the remaining concrete slab.

[Temporary lining plate structure 3: non-synthetic girder or synthetic girder]
The temporary lining plate structure of the present invention is the temporary lining plate structure, wherein the temporary lining plate with or without temporary pavement has a shape and size capable of closing the removal trace space, and the closing plate is an existing main plate. It is provided with a connecting part that can be temporarily fixed to a girder.

  The temporary lining plate structure of the present invention is the temporary lining plate structure, wherein the temporary pavement upper surface of the temporary pavement plate with temporary pavement or the temporary pavement upper surface constructed on the temporary pavement plate without temporary pavement is an existing pavement. It may be the same or substantially the same height as the top surface. Moreover, the lower surface of the block board which comprises a temporary lining plate can also be mounted on the upper surface of an existing concrete floor slab.

  The temporary lining plate structures 1 to 3 can also be applied to replacement of the expansion / contraction device C disposed near the abutment G (on the abutment G) as shown in FIG. Also in this case, the shape and structure of the temporary lining plate can be changed according to the structure and shape in the vicinity of the abutment G. In this case, the anchor may be secured to the existing concrete floor slab on the abutment side.

The replacement method of the expansion / contraction apparatus of the present invention has the following effects both in the case of non-synthetic digits and in the case of synthetic digits.
(1) Since there is almost no need to turn the concrete slab that is used in the conventional expansion device replacement method, no noise is generated and the nuisance to the neighborhood is reduced.
(2) Since the telescopic device can be replaced during night construction, traffic regulation is almost limited to nighttime, and daytime traffic regulation with heavy traffic is reduced.
(3) Since rapid construction is possible compared to the conventional replacement method, it is possible to suppress reductions in traffic regulation fees and toll fees.
(4) By integrating the expansion / contraction device with the precast concrete and providing the joint in the precast concrete, it is possible to facilitate and speed up the bar arrangement work.
(5) Since the existing expansion and contraction device is removed together with the removal-side concrete slab, the replacement work can be speeded up.
(6) By removing the temporary pavement every day during the construction period and re-paving, the flatness of the paved surface can be ensured, and the running performance of the vehicle is improved.
(7) In the case of composite girders, when the traffic is open (mainly daytime), under the temporary lining plate, drilling work on the main girder web, cutting the main girder, installing attachment plates, Stopping work, removal of the temporary attachment plate attachment, and turning work can be performed under the temporary lining plate, and there is almost no need to perform the turning work at night, thereby reducing inconvenience to the neighborhood.
(8) In the case of a composite girder, the main girder web can be cut in advance under the concrete floor slab and the telescopic device before the main work, so that the replacement work can be speeded up.

The temporary lining plate structure of the present invention has the following effects.
(1) The removal trace space is closed by the temporary lining plate, and the temporary lining plate is detachably connected to the main girder by bolts and other connecting tools (stoppers). The plates are securely connected and stable even when the vehicle passes.
(2) Since the temporary lining plate is temporarily fixed to the main girder, and the temporary pavement is constructed thereon, the vehicle travels well, and vibrations and noises are reduced during traveling, so that the neighborhood is not disturbed.
(3) The present invention can also be applied to the replacement of the telescopic device installed on the abutment side.
(4) Since a relatively thin closing plate can be used, a working space can be secured under the closing plate, and drilling and turning work on the concrete floor slab in the working space under the temporary lining plate It can be performed. During this work, since the vehicle can pass over the temporary lining plate, the traffic regulation period can be shortened.

It is explanatory drawing of the replacement | exchange method of the expansion-contraction apparatus of this invention, Comprising: (a) is explanatory drawing of non-synthetic girder and a part precast concrete construction, (b) is explanatory drawing of non-synthetic girder and cast-in-place concrete construction. It is explanatory drawing of the replacement | exchange method of the expansion-contraction apparatus of this invention, Comprising: (a) is a synthetic girder, explanatory drawing of a part precast concrete construction, (b) is a synthetic girder, explanatory drawing of cast-in-place concrete construction Explanatory drawing before construction of non-synthetic girder, which is an existing telescopic device. Explanatory drawing of the expansion | extension apparatus replacement | exchange method of this invention, Comprising: The hole in a pavement and a concrete floor slab in the case of a non-synthetic girder and a part precast concrete construction, and temporary expansion apparatus temporary joining. Explanatory drawing of the replacement | exchange method of the expansion-contraction apparatus of this invention, Comprising: In the case of non-synthetic girder and partial precast concrete construction, pavement and concrete floor slab cutting. It is an exchange method of the expansion-contraction apparatus of this invention, Comprising: A non-synthetic girder, explanatory drawing of installation of the beam for removal in the case of some precast concrete construction. It is an exchange method of the expansion-contraction apparatus of this invention, Comprising: A non-synthetic girder, explanatory drawing of peeling with a main girder in the case of some precast concrete construction, removal. Explanatory drawing of the removal trace space in the replacement | exchange method of the expansion-contraction apparatus of this invention, in the case of a non-synthetic girder and partial precast concrete construction. Explanatory drawing of the exchanging method of the expansion-contraction apparatus of this invention, Comprising: The hole to the main girder upper flange in the case of non-synthetic girder and partial precast concrete construction. Explanatory drawing of the temporary lining plate | version | printing installation in the replacement | exchange method of the expansion-contraction apparatus of this invention, in the case of non-synthetic girder and partial precast concrete construction. Explanatory drawing of provisional pavement construction in the case of non-synthetic girders and partial precast concrete construction, which is a method for replacing the telescopic device of the present invention. It is an exchange method of the expansion-contraction apparatus of this invention, Comprising: A non-synthetic girder, explanatory drawing of joint installation in the case of some precast concrete construction. Explanatory drawing of the temporary lining plate and temporary pavement removal in the case of non-synthetic girders and partial precast concrete construction, which is a method for replacing the telescopic device of the present invention. Explanatory drawing of the installation method of a new expansion-contraction apparatus in the case of non-synthetic girders and partial precast concrete construction, which is a method for replacing an expansion-contraction apparatus of the present invention. Explanatory drawing of reinforcement arrangement | positioning in the case of a non-synthetic girder and a part precast concrete construction, it is the replacement | exchange method of the expansion-contraction apparatus of this invention. Explanatory drawing of concrete placement and curing in the case of non-synthetic girders and partially precast concrete construction, which is a method for replacing the telescopic device of the present invention. Explanatory drawing of the expansion method of the expansion-contraction apparatus of this invention, Comprising: The anchor (reinforcing bar) starts and mechanical joint installation in the case of non-synthetic girder and cast-in-place concrete construction. Explanatory drawing of the temporary lining plate removal in the replacement | exchange method of the expansion-contraction apparatus of this invention, in the case of non-synthetic girder and cast-in-place concrete construction. Explanatory drawing of expansion-contraction apparatus installation in the replacement | exchange method of the expansion-contraction apparatus of this invention, and the case of non-synthetic girder and cast-in-place concrete construction. Explanatory drawing of reinforcement arrangement | positioning in the case of a non-synthetic girder and cast-in-place concrete construction, it is the replacement | exchange method of the expansion-contraction apparatus of this invention. Explanatory drawing of cast-in-place concrete and curing in the case of non-synthetic girders and cast-in-place concrete construction, which is a method for replacing the telescopic device of the present invention. Explanatory drawing before construction of a composite girder, which is an existing telescopic device. Explanatory drawing of the drilling to the main girder web in the replacement method of the expansion / contraction apparatus of the present invention, in the case of composite girder and partial precast construction. Explanatory drawing of the replacement method of the expansion-contraction apparatus of this invention, Comprising: A main girder cutting | disconnection, attachment, and temporary fix | stop in the case of a composite girder and partial precast construction. It is an exchange method of the expansion-contraction apparatus of this invention, Comprising: A synthetic girder, explanatory drawing of pavement and concrete floor slab cutting in the case of a part precast construction. Explanatory drawing of removal of the existing expansion-contraction apparatus in the replacement method of the expansion-contraction apparatus of this invention, in the case of a composite girder and partial precast construction. It is a replacement method of the expansion and contraction device of the present invention, and is an explanatory drawing of drilling holes on the main girder upper flange in the case of composite girder and partial precast construction. Explanatory drawing of the replacement method of the expansion-contraction apparatus of this invention, Comprising: A new main girder installation and bolt final fastening in the case of a composite girder and partial precast construction. It is an exchange method of the expansion-contraction apparatus of this invention, Comprising: A synthetic girder, explanatory drawing of temporary lining plate installation in the case of a part precast construction. Explanatory drawing of temporary pavement construction in the case of a composite girder and partial precast construction, which is a method for replacing the telescopic device of the present invention. It is an exchange method of the expansion-contraction apparatus of this invention, Comprising: A synthetic girder, explanatory drawing of joint installation in the case of a part precast construction. It is a replacement method of the expansion-contraction apparatus of this invention, Comprising: A synthetic girder, explanatory drawing of temporary lining plate and temporary pavement removal in the case of a part precast construction. Explanatory drawing of expansion-contraction apparatus installation in the case of synthetic girder and partial precast construction, which is a method for replacing an expansion-contraction apparatus of the present invention. It is a replacement method of the expansion and contraction device of the present invention, and is an explanatory diagram of reinforcement arrangement and formwork installation in the case of a composite girder and partial precast construction. It is an exchange method of the expansion-contraction apparatus of this invention, Comprising: A composite girder, explanatory drawing of concrete placement and curing in the case of partial precast construction. It is an exchange method of the expansion-contraction apparatus of this invention, Comprising: A synthetic girder, explanatory drawing of anchor raising and mechanical joint installation in the case of cast-in-place concrete construction. Explanatory drawing of the temporary lining plate and temporary pavement removal in the case of synthetic girder and cast-in-place concrete construction, which is a method for replacing the telescopic device of the present invention. The expansion device installation explanatory drawing in the case of synthetic girder and cast-in-place concrete construction, which is a method for replacing the expansion device of the present invention. Explanatory drawing of reinforcement arrangement | positioning in the case of a composite girder and cast-in-place concrete construction, it is the replacement | exchange method of the expansion-contraction apparatus of this invention. Explanatory drawing of the casting method of cast-in-place concrete in the case of synthetic girder and cast-in-place concrete construction, which is a method for replacing the telescopic device of the present invention. It is an example of the temporary lining plate used for the replacement | exchange method of the expansion-contraction apparatus of this invention in the abutment vicinity, a connection part is box type steel, and a lower surface side perspective view in the case of one. It is an example of the temporary lining plate used for the replacement | exchange method of the expansion-contraction apparatus of this invention, a connection part is box type steel, and a lower surface side perspective view in the case of two. It is an example of the temporary lining plate used for the replacement | exchange method of the expansion-contraction apparatus of this invention, a connection part is I type steel, and the lower surface side perspective view in the case of two. The upper surface side perspective view in case a main girder is I type steel. The lower surface side perspective view in case a main girder is I type steel. Plane explanatory drawing which shows the example of arrangement | positioning of the expansion-contraction apparatus of an elevated road. The bottom side perspective view of the expansion-contraction apparatus installed between the abutment side floor slab and the main girder concrete floor slab.

(Embodiment)
The present invention is a method for replacing an existing expansion device with a new expansion device. The method for replacing the expansion / contraction device of the present invention can be applied for both composite and non-composite girders. An example of the replacement method of the expansion / contraction apparatus of the present invention will be described with reference to the drawings.

  The present invention can be used as a new expansion / contraction device with or without precast concrete in which precast concrete is connected to the outside of the expansion / contraction member. Below are the cases of non-synthetic girders, when the new expansion and contraction device is with precast concrete (partial precast concrete construction), without precast concrete (cast-in-place concrete construction), and with composite girders. The four cases of the case where the new expansion / contraction device is equipped with precast concrete (partially precast concrete construction) and the case where there is no precast concrete (cast-in-place concrete construction) will be described.

(Embodiment 1: Replacement method of telescopic device: Non-synthetic girder, partially precast concrete construction)
This embodiment is a case of non-synthetic girders and a case of partially precast concrete construction. FIG. 3 is an explanatory side view of a non-synthetic girder before construction. In FIG. 3, a concrete floor slab 2 is installed on the main girder 1, and an expansion device (expansion joint) 3 is installed between the left and right concrete floor slabs 2. The replacement work of the expansion / contraction device 3 in the non-synthetic girder can be performed after peeling the pavement on the concrete slab or without peeling, but the following explanation is performed without peeling. This exchange can be performed by the procedure shown in FIG. 1 (a) and FIGS.

(1) Drilling holes in the pavement and concrete floor slab, temporary joining of the expansion / contraction device During traffic regulation, holes 5 are drilled in the pavement 4 and the concrete floor slab 2 as shown in FIG. The drilling positions are the left and right sides of the telescopic device 3. At the time of traffic regulation, on the road, as shown in FIG. 4, the joining material 6 is installed across the left and right elastic members 3 a, 3 b of the expansion device 3, and both the elastic members 3 a, 3 b are temporarily joined. Temporary joining can be performed by connecting with a rope or a wire such as a wire, or any other joining means.
(2) Pavement and concrete floor slab cutting At the time of traffic regulation, on the road, as shown in FIG. 5, the outer portion of the hole 5 of the existing pavement 4 and the existing concrete floor slab 2 is cut along a cutting line 7 (for example, , Disk cutter) and cut (separate) into removal side pavement 4a and removal side concrete floor slab 2a.
(3) Installation of removal beam with jack At the time of traffic regulation, a removal beam 8 is installed on the bonding material 6 on the road as shown in FIG. The removal beam 8 is installed with its both ends extending over the left and right removal-side concrete slabs 2a. The removal beam 8, the removal side pavement 4 a and the removal side concrete floor slab 2 a are connected and fixed to the removal beam and the hole 5 through a connecting bar (for example, Gevin Desturp) 9. The removal beam 8 is connected to the elastic members 3a and 3b connected to the removal side concrete slab 2a. The removal beam 8 in FIG. 6 includes a hydraulic jack 10.
(4) Jack-up: peeling and removal from main girder When traffic is restricted, on the road, as shown in FIG. 7, the hydraulic jack 10 is operated (jacked up) to lift the removal beam 8; The removal side pavement 4a, the removal side concrete floor slab 2a, and the existing expansion / contraction device 3 are united and forcibly separated (separated) from the main girder 1 and removed. A removal trace space 11 (FIG. 8) is formed in the removal trace.
(5) Drilling holes in the main girder upper flange At the time of traffic regulation, a hole 12 is drilled in the upper flange 1a of the main girder 1 in the removal trace space 11 of FIG. A drilling tool (for example, an electric drill) can be used for drilling.
(6) Temporary lining plate installation At the time of traffic regulation, the temporary lining plate (temporary steel floor slab) 13 is installed in the removal trace space 11, as shown in FIG. The temporary lining plate 13 has a connecting part (box steel: box girder) 15 attached under the closing plate 14 (FIGS. 41 and 42), and a connecting part (I-shaped steel: I girder) 15 under the closing plate 14. Can be used (FIG. 43) and other various shapes and structures. The connecting portion 15 is temporarily fixed to the main girder 1 with a stopper 17 such as a bolt or a nut.
(7) Temporary pavement construction At the time of traffic regulation, as shown in FIG. 11, the temporary pavement 18 is constructed on the temporary lining plate 13, and the upper surface of the temporary pavement 18 is the same as the upper surface of the existing pavement 4 (substantially the same). Including surface: the same applies below). This construction can be carried out in the same manner as ordinary temporary pavement construction. In addition, a temporary lining plate with temporary pavement in which temporary pavement has been previously constructed can be used.
(8) Joint installation At the time of traffic release (during vehicle traffic), the joint 19 is attached to the remaining concrete floor slab 2 as shown in FIG. The joint 19 is protruded inward from the side surface (cut surface) 2 b of the remaining concrete floor slab 2. The joint 19 can be a loop joint or other structures.
(9) Temporary lining plate and temporary pavement removal At the time of traffic regulation, the temporary lining plate 13 (virtual line portion) is removed as shown in FIG. This removal work is performed by lifting the temporary lining plate 13 with a crane. In this case, it can be performed after the temporary pavement 18 is first peeled or simultaneously without peeling. A space (space 11 after removal) is created in the removal trace.
(10) Installation of New Extension Device As shown in FIG. 14, the new extension device 20 is installed on the main girder 1 of the removal trace space 11. In this case, the height adjustment filler plate 21 is sandwiched between the upper flange 1a of the existing main girder 1 and the new expansion / contraction device 20, and the height of the new expansion / contraction device 20 is adjusted. The height-adjusted new expansion / contraction device 20 is finally tightened to the main girder 1 by the stopper 17, and is connected and fixed to the main girder 1 by the stud bolt 23 for connection with cast-in-place concrete. The new expansion / contraction device 20 in FIG. 14 includes a precast concrete 24 on the outside, and a loop-shaped joint 22 on the outside of the precast concrete 24. The joint 22 may be other than a loop shape. The structure of the new expansion / contraction device may be the same as the existing one or may be different. For example, a rubber expansion / contraction device shown in FIG.
(11) Reinforcement, formwork installation At the time of traffic regulation, as shown in FIG. 15, reinforcing bars 25 are arranged inside the intersecting joints 19 and 22, and the precast concrete 24 of the new expansion and contraction device 20 is installed in the existing concrete floor slab. Connect to 2. A formwork (not shown) is installed between the precast concrete 24 and the remaining-side concrete slab 2 outside the bar arrangement location.
(12) Placing and curing concrete During the traffic regulation, as shown in FIG. 16, concrete (shaded portion in FIG. 16) 26 is cast in place and cured as shown in FIG.

  The temporary bonding of the bonding material 6 of (1) is not necessarily performed. When temporary joining is not performed, the removal beam 8 is installed directly on the existing telescopic device 3.

  In said (4), it can replace with jack up and can pull up the beam for removal with a crane. In this case, it is not necessary to install the jack (3).

  The work procedure of the above embodiment is merely an example, and the procedure can be interchanged as long as the object of the present invention can be achieved. In addition, existing equipment can be appropriately selected and used for work. For example, among the operations (1) to (12), the operations (2), (4), (6), and (8) to (12) are always necessary operations (essential tasks). ), (3), (5), and (7) are not necessarily required. However, in actual construction, it becomes easier to perform the operations (1), (3), and (5). When the operation (7) is performed, the vehicle passes even if it has a temporary lining plate structure. It becomes easy to do.

(Embodiment 2 of replacement method of expansion / contraction device: non-synthetic girder, cast-in-place concrete construction)
This Embodiment 2 is a non-synthetic girder, and can be carried out by the procedure shown in FIG. 1B and FIGS. 17 to 21 using a new expansion / contraction device without precast concrete. The procedure will be described next.

  The operations of (1) to (7), (9), and (12) in FIG. 1B are the same as the operations of (1) to (7), (9), and (12) in FIG. What is different is the operations (8), (10), and (11) in FIG.

  The work (8) in FIG. 1 (b) is an anchor raising work. As shown in FIG. 17, this rolling-out operation rolls out the anchor (rebar) 27 in the remaining-side concrete floor slab 2 and projects it to the inside of the cut surface 2 b of the remaining-side concrete floor slab 2. This is an operation of connecting the mechanical joint 28 to the protruding portion. This turning operation can be performed under the temporary lining plate 13 when the traffic is open (when the vehicle is passing over the temporary lining plate). The method of turning is not particularly limited, but it is preferable to use a water jet so as not to damage the joint surface of the existing concrete slab. Although a mechanical joint is used here, a joint by welding can also be used.

  The work of (10) in FIG. 1B is to install a new expansion / contraction device 29 without precast concrete in the removal trace space 11 of FIG. 18 as shown in FIG. Also in this case, the height of the new telescopic device 29 is adjusted by sandwiching the height adjusting filler plate 21 between the upper flange 1a of the existing main girder 1 and the new telescopic device 29. The new telescopic device 29 having a height adjusted is finally fastened to the upper flange 1 a of the main girder 1 by the stopper 17. The structure of the new expansion / contraction apparatus 29 may be the same as the existing one, or may be different.

  The work (11) in FIG. 1B is a bar arrangement and formwork work. As shown in FIG. 19, the reinforcing bar is arranged between the mechanical joint 28 attached to the existing concrete floor slab 2 and the connecting joint 30 of the new expansion / contraction device 29 as shown in FIG. It is. In this case, one end of the reinforcing bar 31 is connected to the mechanical joint 28, and the other end of the reinforcing bar 31 is connected to the connecting joint 30 of the new expansion / contraction device 29. After the bar arrangement, a formwork (not shown) is installed between the new expansion / contraction device 29 and the remaining concrete floor slab 2 on the outside. This work is performed at the time of traffic regulation. In addition, when a mechanical joint is not used, a reinforcing bar that is rolled out in accordance with the bar arrangement work and a joint by welding may be used.

  The work (12) in FIG. 1B is concrete placing and curing. At the time of traffic regulation, as shown in FIG. 21, concrete (shaded portion in FIG. 21) 32 is cast in place and cured in the mold.

  Even in the second embodiment, among the operations (1) to (12) in the first embodiment, the operations (2), (4), (6), and (8) to (12) are essential operations. The operations 1), (3), (5), and (7) are not necessarily required.

(Third embodiment of the expansion device replacement method: composite girder, partially precast concrete construction)
This embodiment is a case of a composite girder, and is a case where a thing with a precast concrete is used as a new expansion-contraction apparatus. This replacement operation can be performed after peeling the pavement in advance or without peeling, but the following explanation is also performed without peeling. This replacement method can be applied as shown in FIG. 2A and FIGS.

(1) Drilling in the main girder web FIG. 22 is a side view before construction in the vicinity of the telescopic device of the composite girder. In this embodiment, a hole 33 is made in the web 1b of the main girder 1 as shown in FIG. 23 under the concrete floor slab 2 and the existing telescopic device 3 in FIG.
(2) Main girder cutting, attachment, and temporary fixing Before traffic regulation, the main girder 1 is removed along the cutting line 34 under the concrete floor slab 2 and the existing telescopic device 3 as shown in FIG. 1c and the remaining main girder 1 are cut, the removal main girder 1c and the remaining main girder 1 are straddled, and the attachment plate 35 is attached to the cut portion, and the attachment plate 35 is attached to the remaining side with a stopper. The main girder 1 and the removal main girder 1c are connected (temporarily attached). The attachment plate 35 is temporarily attached to both surfaces or one surface of the remaining side main beam 1 and the removal side main beam 1c.
(3) Pavement and concrete floor slab cutting At the time of traffic regulation, on the road, as shown in FIG. 25, the pavement 4 and the concrete floor slab 2 are cut along the cutting line 36, the remaining side pavement 4 and the removal side pavement 4a, The remaining side concrete floor slab 2 and the removal side concrete floor slab 2a are divided. Here, the upper flange 1a is also divided into a remaining side and a removal side.
(4) Removal of the existing expansion / contraction device: removal of the main girder and the main girder At the time of traffic regulation, after removing the attachment plate 35 attached in (2) above on the road, the existing expansion / contraction device 3 and the removal side pavement 4a (FIG. 25) ) And the removal-side concrete slab 2a (FIG. 25) and the removal-side main girder 1c (FIG. 25) are pulled up together with a device such as a crane and removed from the existing main girder 1 (removed). A removal trace space 37 (FIG. 26) is formed in the removal trace.
(5) Drilling in the upper girder upper flange As shown in FIG. 27, a hole 38 is drilled in the upper flange 1a of the remaining main girder 1 in the removal trace space 37 during traffic regulation.
(6) Installation of new main girder and final fastening At the time of traffic regulation, a new main girder 39 is installed in the removal trace space 37 as shown in FIG. Various shapes and structures of the newly installed main girder 39 are conceivable. As an example, what is shown in FIG. 28 is a T-shape with a vertical plate 41 serving as a web under a horizontal plate 40 serving as an upper flange. . The vertical plate 41 of the new main girder 39 is arranged in the web removal trace space 42 (FIG. 26) of the removal side main beam 1c, and the horizontal plate 40 is placed on the upper flange mark 43 (FIG. 26) of the removal side main beam 1c. Arrange to position. The connecting plate 44 is affixed across the newly installed main girder 39 and the remaining main girder 1 and connected and fixed (fixed) with a stopper. A suitable steel plate 44 is a steel plate.
(7) Temporary lining plate installation At the time of traffic regulation, the temporary lining plate 13 is installed in the removal trace space 11 (FIG. 28) as shown in FIG. 29 and temporarily fixed to the new main girder 39 with the stopper 17. The temporary lining plate 13 may be the same as that used in the first embodiment or may have a different structure and shape. Also in this case, it is preferable that the temporarily fixed temporary lining plate 13 has the lower surface of the closing plate 14 equal to or slightly lower than the upper surface of the existing concrete floor slab 2.
(8) Temporary pavement construction Temporary pavement 18 is constructed on the temporary lining plate 13 as shown in FIG. It is desirable that the temporary pavement 18 has an upper surface that is the same height as the upper surface of the existing pavement 4.
(9) Joint installation At the time of traffic regulation, a joint 45 is installed on the remaining-side concrete slab 2 as shown in FIG. A loop joint is suitable for the joint 45, but joints of other shapes and structures can also be used.
(10) Temporary lining plate and temporary pavement removal At the time of traffic regulation, the temporary lining plate 13 (the phantom line portion in FIG. 32) installed in (7) is removed. A removal trace space 11 is formed in the removal trace.
(11) Extension device installation At the time of traffic regulation, a new extension device 46 with precast concrete (Fig. 33) is installed in the removal trace space 11 of Fig. 32. Also in this case, the height of the new expansion / contraction device 46 is adjusted by sandwiching the height adjusting filler plate 21 between the upper flange 40 of the new main girder 39 and the new expansion / contraction device 46. The new telescopic device 46 adjusted in height is finally tightened to the upper flange 40 of the new main girder 39 by the stopper 17. At this time, the joint (loop joint) 45 installed on the remaining-side concrete slab 2 and the joint 48 of the precast concrete 47 (FIG. 33) are crossed.
(12) Reinforcement and formwork installation At the time of traffic regulation, reinforcing bars 49 are arranged inside the joints 45 and 48 as shown in FIG. A formwork (not shown) is installed between the precast concrete 47 and the remaining-side concrete floor slab 2 outside the reinforcing bar location.
(13) Placing and curing concrete At the time of traffic regulation, as shown in FIG. 35, concrete (shaded area in FIG. 35) 50 is cast in place (spaced) and cured.

  Even in the operations (1) to (13), the operations (1) to (7), (9), and (11) to (13) are essential operations, but the operations (8) and (10) are performed. Is not always necessary. However, in the actual construction, the work (8) is easy to perform, and the work (10) makes it easy for the vehicle to pass even if the temporary lining plate structure is used.

(Embodiment 4: Replacement method of expansion and contraction device: composite girder, cast-in-place concrete construction)
This embodiment is a composite girder and uses a new expansion / contraction device without precast concrete, and can be constructed as shown in FIG. 2B and FIGS. The operations of (1) to (8), (10), and (13) in FIG. 2B are the operations of (1) to (8), (10), and (13) of FIG. The same and different are the operations of (9), (11), and (12) in FIG.

  The work (9) in FIG. 2 (b) is an anchor raising work. 36. As shown in FIG. 36, this rolling-out operation is an operation for rolling out the anchor 27 in the remaining-side concrete slab 2 and connecting the mechanical joint 28 to the protruding portion of the anchor 27. This operation is performed under the temporary lining plate 13 when the traffic is open (when the vehicle is passing over the temporary lining plate). It is desirable to carry out this rolling-out operation with a water jet so as not to damage the joint surface of the existing concrete slab. Although a mechanical joint is used here, a joint by welding can also be used.

  The work (11) in FIG. 2 (b) is a work to install the new expansion / contraction device 51 (FIG. 38) without precast concrete in the removal trace space (the phantom line part in FIG. 37) 11. Also in this case, the height of the new telescopic device 51 is adjusted by sandwiching the height adjusting filler plate 21 between the upper flange 40 of the new main girder 39 and the new telescopic device 51. The new telescopic device 51 whose height is adjusted is finally tightened to the upper flange 40 of the new main girder 39 (FIG. 38) by the stopper 17. The structure of the new expansion / contraction device 51 may be the same as the existing one, or may be different.

  The work (12) in FIG. 2 (b) is a bar arrangement and formwork work. As shown in FIG. 39, this work is a work of arranging the reinforcing bar 31 between the mechanical joint 28 and the connection joint 30 of the new expansion / contraction device 51. In this case, one end of the reinforcing bar 31 is connected to the mechanical joint 28, and the other end of the reinforcing bar 31 is connected to the connecting joint 30 of the new expansion / contraction device 51. After the bar arrangement, a formwork (not shown) is installed between the new expansion / contraction device 51 and the existing concrete floor slab 2 at the outer portion. This work can be performed at the time of traffic regulation. In addition, when a mechanical joint is not used, a reinforcing bar that is rolled out in accordance with the bar arrangement work and a joint by welding may be used.

  The work of (13) in FIG. 2 (b) is concrete placing and curing. As shown in FIG. 40, when traffic is restricted, concrete (shaded portion in FIG. 40) 32 is cast in place (spaced) and cured in the mold.

  Even in the operations (1) to (13), the operations (1) to (7), (9), and (11) to (13) are essential operations, but the operations (8) and (10) are performed. Is not always necessary.

(Embodiment 5 of the expansion device replacement method: composite girder, partially precast concrete construction or cast-in-place concrete construction)
In the present invention, in the case of a composite girder and partially precast concrete construction or cast-in-place concrete construction, the removal beam 8 is installed and fixed on the concrete floor slab 2 or the existing pavement 4, and the removal beam is provided. The removal-side concrete floor slab 2a and the existing expansion / contraction device 3 can be peeled off and removed from the main girder 1 by pushing up, lifting or the like. In this case, the removal beam 8 may be provided with a jack or may not be provided with a jack. The removal beam 8 may be installed on the concrete floor slab 2 or the existing pavement 4 after cutting the main girder 1, the concrete floor slab 2, etc., or before cutting.

  Embodiments 1 to 5 of the replacement method of the expansion device can also be applied to replacement of the expansion device C arranged near the abutment G as shown in FIG. In this case, a part of the replacement work can be omitted or another work can be added.

(Embodiment 1 of temporary lining plate structure: In case of non-synthetic girder)
This temporary lining plate structure is a case of a non-synthetic girder, and the temporary lining plate 13 (FIG. 10) is installed in the existing concrete floor slab 2, the existing expansion and contraction device 3, and the removal trace space 11 (FIG. 9). The trace space 11 is closed, and the temporary lining plate 13 is temporarily fixed to the existing main girder 1 so as to be detachable. Temporary fastening of the temporary lining plate 13 can be performed with a bolt or other connecting tool (stopper). By temporarily fixing, the temporary lining plate 13 is stabilized, and the vehicle can pass thereover. In addition, a work space that enables work from below the road surface is secured under the temporary lining plate 13.

  Various structures and shapes of the temporary lining plate 13 can be used. For example, a closing plate 14 (FIG. 10) having a shape and a size capable of closing the removal trace space 11 and the closing plate 14 are installed in the existing main girder. 1 is provided with a connecting portion 15 (FIG. 10) that can be temporarily fixed, and the connecting portion 15 protrudes from the back side of the closing plate 14, and the temporary lining plate 13 is installed in the removal trace space 11 and connected. When the portion 15 is connected to the existing main girder 1, the lower surface of the closing plate 14 becomes the same height as the upper surface of the existing concrete floor slab 2, and when the temporary pavement 18 (FIG. 11) is constructed thereon, the upper surface of the temporary pavement 18. Are aligned at substantially the same height as the upper surface of the existing pavement 4, making it easier for the vehicle to pass.

(Temporary lining plate structure embodiment 2: in the case of composite girder)
This temporary lining plate structure is a case of a composite girder, and a new main girder 39 (FIG. 28) is installed in the removal trace space 37 (FIG. 27) of the existing main girder 1, and the new main girder 39 and the existing main girder 1 is attached and fixed to the attachment plate 44 (FIG. 28), and the temporary lining plate 13 (FIG. 29) is installed on the new main girder 39 in the removal trace space 37 and the removal trace. The space 37 is closed, and the temporary lining plate 13 is temporarily fixed to the new main girder 39 so as to be detachable. Also in this case, the temporary lining plate 13 can be temporarily fixed with a bolt or other connecting tool (stopper). By temporarily fixing, the temporary lining plate 13 is stabilized, and the vehicle can pass thereover. In addition, a work space that enables work from below the road surface is secured under the temporary lining plate 13.

  Various structures and shapes of the temporary lining plate 13 can be used, but those having the same structure and shape as the temporary lining plate 13 in the temporary lining plate structure 1 can be used. Also in this case, when the closing plate (horizontal plate) 14 (FIG. 29) is temporarily fixed to the newly installed main girder 39 with the stopper 17, the lower surface of the closing plate 14 becomes substantially the same height as the upper surface of the existing concrete slab 2, When the temporary pavement 18 (FIG. 30) is constructed thereon, the upper surface of the temporary pavement 18 is preferably aligned with the same height as the upper surface of the existing pavement 4.

(Third embodiment of temporary lining plate structure: non-synthetic girder or synthetic girder)
In the temporary lining plate structure of the present invention, the temporary pavement is constructed on the temporary lining plate 13 in the temporary lining plate structure, and the upper surface of the temporary pavement is the same height as the upper surface of the existing pavement. Also good. Temporary lining plates can be arranged in two or more divided in the direction perpendicular to the bridge axis. The temporary lining plate 13 includes a closing plate 14 and a connecting portion 15. The blocking plate 14 may have a cell structure in which ribs 14b are attached to the bottom surface of the thin plate 14a, or thin plates 14a are attached to the upper and lower sides of the rib 14b, and the cells are surrounded by both the thin plates 14a and the ribs 14b.

  In the temporary lining plate structures 1 to 3 described above, the connecting portion 15 is provided under the closing plate 14. The connecting portion 15 may be a box cross section or an H cross section. In the temporary lining plate structure of 1 to 3, when the connecting portion 15 is installed on the main girder 1 and temporarily fixed, the work from below the road surface is performed under the closing plate 14 (between the closing plate 14 and the main beam 1). A working space S (FIGS. 10, 11, 29, and 30) that enables the above is formed. The working space S is easier to work when it is higher (deeper). 10 and 30, the lower surface of the closing plate 14 of the temporary lining plate 13 is lower than the upper surface of the existing concrete floor slab 2, and the temporary pavement 18 constructed on the upper surface of the closing plate 14 (FIGS. 11 and 30). ) Is the same height as the upper surface of the existing pavement 4, but in the present invention, the temporary lining plate 13 can be covered on the existing concrete floor slab 2 as shown in FIG. 43.

  For example, in order to provide a wide space for processing the concrete floor slab under the road surface, the lower surface of the blocking plate 14 may be aligned with the upper surface of the existing concrete floor slab 2. In this case, the thickness ratio between the blocking plate 14 and the temporary pavement 18 can be arbitrarily selected. For example, the thickness is set to 6 to 7: 4 to 3, and the total thickness of the upper flange thickness of the existing concrete floor slab 2 and the existing pavement. In the case of 80 mm, when the total thickness of the closing plate 14 and the temporary pavement 18 of the temporary lining plate 13 is 80 mm, if the blocking plate thickness is about 48 mm to 56 mm and the temporary pavement thickness is about 32 mm to 24 mm, Ensuring strength and comfortable trafficability are ensured. Further, the upper surface of the temporary pavement 18 is the same (substantially the same) as the upper surface of the existing pavement 4.

  In any of the first to third embodiments, the temporary lining plate 13 may be preliminarily provided with temporary pavement in a factory or a yard, or may be constructed on site. In addition, the temporary lining plate can be divided into two or more divided in the direction perpendicular to the bridge axis.

  The above-described embodiment is merely an example, and the structure, shape, size, etc. of the temporary lining plate, the new expansion / contraction device, and the new main girder according to the present invention may be other than the above as long as they are suitable for the application. .

  The above-described embodiment is merely an example, and the method for replacing an expansion / contraction device of the present invention can be used for replacement of an expansion / contraction device such as an elevated road having various structures other than those illustrated if possible.

1 (existing or remaining side) main girder 1a (main girder) upper flange 1b (main girder) web 1c removal side main girder 2 (existing or remaining side) concrete slab 2a removal side concrete slab 2b (concrete Side) (cut surface) of floor slab
DESCRIPTION OF SYMBOLS 3 Expansion / contraction apparatus 3a One expansion / contraction member of expansion / contraction apparatus 3b The other expansion / contraction member of expansion / contraction apparatus 4 Pavement (existing or remaining side) 4a Removal side pavement 5 Hole of (existing concrete floor slab) 6 Bonding material 7 (Pavement and concrete floor Plate cutting line 8 beam for removal 9 connecting bar (PC steel bar)
10 Hydraulic jack 11 Removal trace space 12 (of expansion device) Hole 13 (of main girder upper flange) Temporary lining plate (temporary steel floor slab)
14 Blocking plate 14a (for temporary lining plate) Thin plate 14b Rib 15 (Temporary lining plate) connecting portion (box steel (box girder), I-shaped steel (I girder))
17 Stopper 18 Temporary pavement 19 Joint 20 (with concrete floor slab) 20 New expansion device 21 (with precast concrete) Height adjusting filler plate 22 Joint (of precast concrete) 23 Stud bolt 24 Precast concrete 25 Reinforcement 26 Concrete 27 (Concrete floor) Anchor (in the plate)
28 Mechanical joint 29 (No precast concrete) New expansion and contraction device 30 (New expansion and contraction device) Connection joint 31 Reinforcing bar 32 Concrete 33 Hole of (main girder web) Cutting line 35 Attachment plate 36 Cutting line 37 (of main girder) Removal space 38 Hole 39 New main girder 40 (New main girder) Horizontal plate (upper flange)
41 Vertical plate 42 (for main girder) Web removal trace space 43 (for main girder) Upper flange mark 44 (for removed main girder) Joint plate 45 Joint 46 (for concrete floor slab) Joint 46 (with precast concrete) Equipment 47 Precast concrete 48 Joint (of precast concrete) Reinforcing bar 50 Concrete 51 (No precast concrete) New expansion and contraction equipment A Main girder B Concrete floor slab C Expansion equipment D Finger E Faceplate F Concrete G Abutment H Abutment side floor slab S Work space

Claims (13)

In the replacement method of the expansion and contraction device on the elevated road where the main girder and the concrete floor slab are not synthesized and the expansion and contraction device is installed,
Do the following:
(1) Cutting concrete floor slab or existing pavement and existing concrete floor slab to removal side and remaining side (2) Removal side concrete floor slab from main girder or removal side pavement and removal side concrete floor slab , Peeling and removal of the existing expansion and contraction device (3) installation of temporary lining plate in the removal trace space (4) installation of joints on the remaining concrete floor slab (5) removal of temporary lining plate (6) said removal trace Installation of a new expansion / contraction device with precast concrete in the space (7) Reinforcement to the joint of the remaining side concrete floor slab and the joint of the new expansion / contraction device, outside the bar arrangement location, the remaining side concrete floor slab and the new expansion / contraction Form placement between precast concrete of the device (8) Placing concrete in the formwork, curing The work of (4) is performed under the temporary lining plate,
A method for replacing an expansion / contraction device. In the replacement method of the expansion and contraction device on the elevated road where the main girder and the concrete floor slab are not synthesized and the expansion and contraction device is installed,
Do the following:
(1) Cutting concrete floor slab or existing pavement and existing concrete floor slab to removal side and remaining side (2) Removal side concrete floor slab from main girder, removal side pavement and removal side concrete floor slab , Peeling and removal of existing expansion and contraction device (3) installation of temporary lining plate in the removal trace space (4) protrusion of anchor in remaining concrete floor slab by turning operation (5) removal of temporary lining plate (6 ) Installation of a new extension device without precast concrete in the removal trace space (7) Reinforcement of the remaining side concrete floor slab to the anchor and new extension device, outside the reinforcement, Formwork installation between new expansion and contraction devices (8) Placing concrete into the formwork, curing The work of (4) is performed under a temporary lining plate,
A method for replacing an expansion / contraction device. In the replacement method of the telescopic device according to claim 1 or 2,
At least before the work described in (6), drill holes in the main girder upper flange in order to attach a stopper for joining with the concrete slab,
A method for replacing an expansion / contraction device. In the replacement | exchange method of the expansion-contraction apparatus of any one of Claims 1-3,
The temporary lining plate is a temporary lining plate with temporary pavement or a temporary lining plate without temporary pavement,
A method for replacing an expansion / contraction device. In the replacement method of the extension device on the elevated road where the main girder and the concrete floor slab are combined and the extension device is installed,
Do the following:
(1) Drilling in the main girder web (2) Cutting the main girder to the removal side and the remaining side, and attaching the attachment plate to the remaining side and removal side main girder across the main girder cutting point (3) Cutting concrete floor slab or pavement and concrete floor slab to removal side and remaining side (4) Removal side main girder and removal side concrete floor slab after removing attachment plate , Removal of pavement on the removal side and concrete floor slab on the removal side and the existing expansion / contraction device (5) Installation of the new main girder in the main girder removal space and final fastening of the new main girder to the remaining main girder (6) Existing expansion / contraction device and removal side concrete floor slab, or installation of temporary lining plate in removal space of removal side pavement and removal side concrete floor slab and temporary fixing to new main girder (7) Remaining side concrete floor slab (8) Removal of temporary lining plate (9) Preliminary space for removal of temporary lining plate Installation of new expansion and contraction device with strike concrete (10) Reinforcement to the joint of the remaining concrete floor slab and the joint of the new expansion device, precast concrete of the remaining side concrete floor slab and the new expansion device (11) Placing concrete into the formwork, curing The above steps (1), (2), and (7) are performed under a temporary lining plate.
A method for replacing an expansion / contraction device. In the replacement method of the extension device on the elevated road where the main girder and the concrete floor slab are combined and the extension device is installed,
Do the following:
(1) Drilling in the main girder web (2) Cutting the main girder to the removal side and the remaining side, and attaching the attachment plate to the remaining side and removal side main girder across the main girder cutting point (3) Cutting of concrete floor slab or pavement and concrete floor slab into remaining side and removal side (4) Removal side main girder and removal side concrete floor slab after removing attachment plate Or, remove the pavement on the removal side and the concrete floor slab on the removal side, and the existing expansion and contraction device. (5) Install the new main girder in the main girder removal space and final tighten the new main girder in the remaining main girder (6 ) Installation of temporary lining plate and temporary fixing to the new main girder in the existing expansion / contraction device and the removal side concrete floor slab or the removal side pavement and removal side concrete floor slab space (7) Protrusion of anchor in remaining side concrete slab (8) Removal of temporary lining plate (9) Temporary lining plate Installation of new expansion and contraction device without precast concrete in the trail space (10) Reinforcement to the anchor in the remaining side concrete floor slab and the joint of the new expansion and contraction device, outside of the bar arrangement and the remaining side concrete floor slab Form installation between the new expansion and contraction device (11) Placing concrete in the form, curing Curing (1), (2), (7) under the temporary lining plate,
A method for replacing an expansion / contraction device. In the replacement method of the expansion-contraction apparatus of Claim 5 or Claim 6,
At least before the work described in (5), drill holes in the main girder upper flange to attach a stopper for joining the existing main girder upper flange and joining the concrete slab,
A method for replacing an expansion / contraction device. In the replacement | exchange method of the expansion-contraction apparatus of any one of Claim 5 to 7,
The temporary lining plate is a temporary lining plate with temporary pavement or a temporary lining plate without temporary pavement,
A method for replacing an expansion / contraction device. In the temporary lining plate structure during replacement of the expansion / contraction device for non-synthetic girders,
The removal side concrete floor slab, or the removal side pavement and the removal side concrete floor slab, and the temporary lining plate with or without temporary paving are installed in the removal trace space of the existing expansion and contraction device, and the removal trace space is blocked.
The temporary lining plate is detachably temporarily attached to the existing main girder so that the vehicle can pass over the temporary lining plate and a work space is secured below.
Temporary lining plate structure characterized by In the temporary lining plate structure during replacement of the expansion device for the composite girder,
A new main girder is installed in the removal ruins space of the removal side main girder,
A connecting plate is addressed to the new main girder and the remaining main girder and connected and fixed,
The removal side concrete floor slab, or the removal side pavement and the removal side concrete floor slab, and the removal trace space of the existing expansion and contraction device, with temporary paving with or without temporary paving installed on the new main girder And the removal space is closed,
The temporary lining plate is temporarily fixed to the newly installed main girder so that the vehicle can pass over the temporary lining plate, and a work space is secured below.
Temporary lining plate structure characterized by that. In the temporary lining plate structure according to claim 9 or claim 10,
A temporary lining plate with or without temporary paving is provided with a blocking plate of a shape and size that can block the removal trace space, and a connecting portion that can be temporarily fixed to the existing or newly installed main girder,
The connecting portion is provided on the back side of the closing plate,
Temporary lining plate structure characterized by that. In the temporary lining plate structure according to any one of claims 9 to 11,
The temporary pavement upper surface of the temporary lining plate with temporary pavement, or the temporary pavement upper surface constructed on the temporary lining plate without temporary pavement is the same or substantially the same height as the upper surface of the existing pavement,
Temporary lining plate structure characterized by that. In the temporary lining plate structure according to any one of claims 9 to 12,
The lower surface of the closing plate constituting the temporary lining plate can be placed on the upper surface of the existing concrete floor slab,
Temporary lining plate structure characterized by that.

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