KR102321972B1 - Construction method of expansion joint using induction drainage pipe - Google Patents

Abstract

It is an object of the present invention to induce rainwater flowing in from the asphalt layer on the upper part of the bridge to be drained through the inside of the expansion joint along the gradient of the bridge, thereby solving the phenomenon caused by rainwater or inflowing water pooling or leakage. A method of constructing an expansion joint using a drain pipe is provided.
The present invention, the first step of providing an expansion joint device comprising a guide drain pipe and a perforated pipe that can induce rainwater to be drained along the slope of the bridge are installed at regular intervals; a second step of setting the expansion joint provided in the first step to the bridge so as to be installed at a predetermined distance between the top plate and the top plate of the bridge; A third step of installing a rainwater induction bracket on the side wall of the concrete layer of the bridge so as to couple the end of the perforated pipe provided in the expansion joint device set in the second step, and coupling the rainwater inducing bracket and the perforated pipe; And in the state in which the perforated pipe and the rainwater induction bracket are combined by the third step, pouring a futa concrete comprising a water permeable layer through which rainwater can flow so that the perforated pipe is buried between the expansion joint device and the upper plate of the bridge to fix the expansion joint device Step 4; includes.

Description

Construction method of expansion joint using induction drainage pipe

The present invention relates to a construction method of an expansion joint device using a guide drain pipe, and more particularly, rainwater (rainwater) flowing in from the asphalt layer on the upper part of the bridge can be drained through the inside of the expansion joint device along the gradient of the bridge. It relates to a construction method of an expansion joint device using an induction drain pipe.

The expansion joint device is a device that absorbs the behavior of the bridge's expansion and contraction according to the temperature change due to the mechanical device.

Such an expansion joint device has a form in which a pair of finger plates that repeat insertion and separation between each other while being engaged with each other are provided, or rails spaced apart from each other by a predetermined distance are provided.

In addition, when applied to a joint bridge, a plurality of such expansion joint devices are installed for each predetermined length, and when applied to an integral bridge, they may be installed on pavements on both sides of the bridge.

1 is a state diagram of an expansion joint device 1 according to the prior art. Referring to this, the joint bridge includes an upper structure divided into a plurality, and the upper structure includes a road pavement 30 and the road pavement. It includes a girder 20 that provides support at the bottom.

And an expansion joint device 1 is provided between each upper structure. At this time, the expansion joint device (1) is provided at a position corresponding to the upper portion of the pier (10). In addition, a bridge support 12 for supporting the upper structure is provided between the pier 10 and the upper structure.

However, this expansion joint device 1 reduces drivability during vehicle passage, and has a replacement cycle of approximately 6 to 7 years due to damage caused by vehicle load and foreign substances.

In particular, although not shown in detail in FIG. 1 , the lower part of the expansion joint device 1 prevents free induction drainage of road surface water from the upper part of the bridge and the inflow of road surface water and various foreign substances under the bridge span, resulting in deterioration of the function due to corrosion of the bridge bearing. And a waterproof rubber sheet to prevent corrosion of concrete is installed.

At this time, the waterproof rubber sheet is filled with foreign substances accumulated over the years, so the road surface water does not fall out or the road surface water overflows to the abutment and pier coping floor and just flows out, cannot withstand the load and is torn, or cleaning of foreign substances as necessary When necessary, there was a problem that the maintenance of the waterproof rubber sheet was difficult.

In order to replace the waterproof rubber sheet, the vehicle must be controlled by lanes, crushed and blocked out of the non-shrinkable concrete between the bridge slabs. , there is a problem in that drainage, economic efficiency, and water retention are significantly lowered.

These problems will be described in detail with reference to FIGS. 2A to 2D .

Figure 2a is a cross-sectional view showing the installation state of a conventional waterproof rubber sheet for a finger-type expansion joint device. The conventional waterproof rubber sheet for a finger-type expansion joint device is a structure fixed to the slab side with an anchor bolt. It is very difficult to clean the foreign material deposited on the rubber sheet, and when the waterproof rubber sheet is torn due to the weight of the accumulated foreign material, crush the non-shrinkable concrete in the inter-slab part to block out the expansion joint device (1) and the waterproof rubber sheet. Since they must be replaced together, serious problems arise in economic feasibility and durability.

In addition, when replacing rubber sheets for waterproofing and cleaning foreign substances on the bridge, vehicle control is performed by lane, so a problem of traffic congestion inevitably occurs.

In addition, Figure 1b is a cross-sectional view showing the installation state of the conventional rubber sheet for waterproofing for a rail-type expansion joint device. In the conventional rubber sheet for waterproofing for a rail-type expansion joint device, several waterproof rubber sheets are sandwiched between the rail-type steel materials. The road surface water is completely drained, and foreign substances are relatively less deposited than the finger-type expansion joint device (1), so there is an advantage in that it is easy to clean the waterproof rubber sheet on the bridge in a minimum amount of time.

In addition, the replacement of the rubber sheet for waterproofing has to be replaced while traffic control is made for each lane like the finger-type expansion joint device (1), and there is a problem that separate special equipment is required to replace the rubber sheet for waterproofing.

And, Figure 1c is a cross-sectional view showing the installation state of the conventional waterproof rubber sheet for a new finger type expansion joint device, the conventional waterproof rubber sheet for a new finger type expansion joint device is a rubber sheet for waterproofing on the inner surface of the steel material is vulcanized Since the surface water is perfectly drained and foreign substances are deposited relatively less than the finger-type expansion joint device (1), it has the advantage of easy cleaning of the waterproof rubber sheet on the bridge in the least amount of time.

However, when the waterproof rubber sheet is torn, it is impossible to replace only the waterproof rubber sheet separately, so the non-shrinkable concrete in the area between the bridge slabs is crushed and blocked out under traffic control for each lane. Since the seat needs to be replaced, there is a problem of lowering economic efficiency.

In addition, Figure 1d is a cross-sectional view showing the installation state of the conventional waterproof rubber sheet for the expansion joint of the railroad bridge gravel roadway. After fixing the rubber sheet for waterproofing on the side of the steel plate, pouring and curing non-shrinkable concrete by reinforcing it with reinforcing bars in the blocked-out part, fixing the steel plate of a certain size with an L-shaped steel plate and a nut, laying gravel, and installing railroad sleepers and rails is one structure.

Such a conventional waterproof rubber sheet for an expansion joint on a railroad bridge is very difficult to clean after a certain time has elapsed. Since all of the rubber sheets for waterproofing need to be replaced, serious problems arise in economic feasibility and durability.

In addition, since it is necessary to replace the rubber sheet for waterproofing and clean foreign substances while controlling the operation of the train on the bridge, there is an unavoidable problem due to the control of the operation of the train and the difficulty of replacing the rubber sheet for waterproofing in a short time.

On the other hand, as shown in FIGS. 2A to 2D, foreign substances are deposited on the waterproof rubber sheet, and the waterproof rubber sheet is often torn due to its weight. Deterioration and peeling of concrete, generation of rust and functional deterioration of bridge bearings, deposition of foreign substances, and rust on steel girder occur, resulting in reduced durability, shortening the life of the bridge, and excessive maintenance costs.

And, the repair method of the waterproof rubber sheet is to block out the non-shrinkable concrete in the slab interval with the bridge upper structure and lower structure, and repeatedly replace the expansion joint device (1) and the waterproof rubber sheet for each lane. Therefore, it causes serious problems in economic feasibility and durability.

In addition, when replacing the rubber sheet for waterproofing and cleaning foreign substances on the bridge, vehicle control is always made, so the problem of traffic congestion inevitably occurs.

In particular, existing expansion joints have a problem in that rainwater cannot be completely drained due to the drainage limit of rainwater (rainwater) flowing in from the asphalt layer above the bridge.

As a result, the inflow of rainwater accumulates and damages the substructure, and in winter, icing occurs due to stagnant water, making the road surface slippery, and there are problems such as a secondary accident risk.

Specifically, rainwater drained from the upper part of the bridge is designed to be drained to both sides of the bridge. In the case of a bridge with a gradient, rainwater flows along the gradient of the bridge and cannot be drained to both sides of the bridge. The need for expansion joints is emerging.

Korean Intellectual Property Office Application No. 10-2007-0062571 Korean Intellectual Property Office Application No. 10-2009-0033829 Korean Intellectual Property Office Application No. 10-2009-0060695 Korean Intellectual Property Office Application No. 10-2012-0073023

The present invention has been devised to solve the problems of the prior art, and an object of the present invention is to induce rainwater flowing in from the asphalt layer of the upper part of the bridge to be drained through the inside of the expansion joint along the gradient of the bridge, An object of the present invention is to provide a construction method of an expansion joint device using an induction drain pipe that can solve the phenomenon caused by stagnant or leaking of rainwater or inflowing water.

The present invention for achieving the above object, the first step of providing an expansion joint device comprising a guide drain pipe and a perforated pipe that can induce rainwater to be drained along the slope of the bridge are installed at regular intervals; a second step of setting the expansion joint provided in the first step on the bridge to be installed at a predetermined distance between the top plate and the top plate of the bridge; A third step of installing a rainwater induction bracket on the side wall surface of the concrete layer of the bridge so that the end of the perforated pipe provided in the expansion joint device set in the second step can be coupled, and coupling the rainwater inducing bracket and the perforated pipe; And in the state in which the perforated pipe and the rainwater induction bracket are combined by the third step, pouring a futa concrete comprising a water permeable layer through which rainwater can flow so that the perforated pipe is buried between the expansion joint device and the upper plate of the bridge to fix the expansion joint device It is preferable to include; a fourth step.

The expansion joint device provided in the first step includes: left and right upper plates that are installed to have a mutually constant distance between the upper plate and the upper plate of the bridge and are approached or spaced apart from each other; left and right side plates respectively installed on the bottom surfaces of the left and right upper plates to form an inner space; a plurality of joints respectively connected to the left and right side plates and embedded in the futa concrete; an upper waterproofing rubber sheet provided with both ends fixed to the inside of the left and right side plates to be disposed in the upper region of the space, and providing a waterproof function at the corresponding position; and a lower waterproof rubber sheet having both ends fixed inside the left and right side plates so as to be spaced apart from the lower portion of the upper waterproof rubber sheet and disposed in the lower region of the space, and providing a waterproof function at the corresponding position; Part: left and right perforated pipes having one end fixedly installed on the outside of the left and right side plates so as to be embedded in the futa concrete; a flexible induction drain pipe having both ends fixedly installed inside the left and right side plates so as to be connected to the left and right perforated pipes and disposed in the space; a through hole formed in the left and right side plates to which the induction drain pipe and the perforated pipe are fixed so that the induction drain pipe and the left and right perforated pipes communicate with each other; It is preferable to include a; fixing brackets respectively installed on the left and right side plates so as to be adjacent to the through hole to fix the induction drain pipe and the perforated pipe.

The guide drain pipe is made of a bellows type, and is preferably installed so as to be disposed between the upper waterproof rubber sheet and the lower waterproof rubber sheet.

The upper waterproof rubber sheet and the lower waterproof rubber sheet are formed to be stretchable and bent into a predetermined shape, and the middle portion of the lower waterproof rubber sheet is provided with a flat portion to support the guide drain pipe, and the guide drain pipe is provided on the flat portion. It is preferable to install it so that it is supported.

The fixing bracket includes: a first flange fixed to the left and right side plates and having a through hole formed in the center thereof to correspond to the through hole; a first coupling protrusion formed to protrude in an annular shape from one surface of the first flange and inserted into the ends of the perforated pipe and the induction drain pipe; and a first fixing part made of a fixing bolt or rivet to respectively fix the first coupling protrusion and the perforated pipe and the first coupling protrusion and the induction drain pipe.

The rainwater induction bracket includes: a second flange fixed to the side wall surface of the concrete layer of the bridge top plate, and having a drainage hole formed in the center; a second coupling protrusion formed to protrude in an annular shape from one surface of the second flange and inserted into the end of the perforated pipe; and a second fixing part made of a fixing bolt to fix the second coupling protrusion and the perforated pipe, and a guide part for guiding the drainage of rainwater to the opposite side of the second coupling protrusion; it is preferable to be installed so as to be connected .

According to the construction method of the expansion joint device using the guide drain pipe according to the present invention, rainwater flowing in from the asphalt layer on the upper part of the bridge is drained along the bridge gradient through the inside of the expansion joint device, thereby improving drainage performance. there is

As a result, the lifespan of the structure is extended by preventing stagnant or leaking rainwater flowing into the expansion joint device, and there is no stagnant water in winter to prevent icing, thereby preventing the risk of secondary accidents.

1 is a state diagram of an expansion joint device according to the prior art;
2a to 2d are views for explaining the problems of the expansion joint device according to the prior art,
3 is a block diagram of a construction method of an expansion joint device using a guide drain pipe according to the present invention;
4 is a view schematically showing a structure installed by the construction method of an expansion joint device using a guide drain pipe according to the present invention;
5 is a view schematically showing an example in which an expansion joint device using an induction drain pipe according to the present invention is installed at an angle;
6 is a view showing an expansion joint device constructed in the construction method of an expansion joint device using a guide drain pipe according to the present invention;
7 is a view showing an example in which only the upper waterproofing sheet is provided, in a state in which a guide drain is installed in an expansion joint provided in an expansion joint device using a guide drain pipe according to the present invention;
8 is a view schematically showing a bridge in a state of being constructed by the construction method of an expansion joint device using a guide drain pipe according to the present invention when viewed from above.

Hereinafter, a preferred embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

Prior to the description of the present invention, the following specific structural or functional descriptions are only exemplified for the purpose of describing embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms and , should not be construed as being limited to the embodiments described herein.

In addition, since the embodiment according to the concept of the present invention may have various changes and may have various forms, specific embodiments will be illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific disclosed form, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

3 is a block diagram of a construction method of an expansion joint device using a guide drain pipe according to the present invention, and FIG. 5 is a diagram schematically showing an example in which an expansion joint device using a guide drain pipe according to the present invention is installed at an angle, 6 is a view showing an expansion joint device constructed in the construction method of an expansion joint device using a guide drain pipe according to the present invention, and FIG. It is a view showing an example in which only the upper waterproofing sheet is provided as a state in which the drainage part is installed, and FIG. 8 is a view schematically viewed from above of the bridge constructed by the construction method of the expansion joint device using the guide drain pipe according to the present invention. am.

As shown in these drawings, the construction method of the expansion joint device using the guide drain pipe according to the present invention is a guide drain pipe 320 and perforated pipe (310A, 310B) that can induce rainwater to be drained along the slope of the bridge. A first step (S101) of providing an expansion joint device 100 in which the induced drainage unit 300 including a predetermined interval is installed, and the expansion joint device 100 provided in the first step (S101) of the bridge Ends of the perforated pipes 310A and 310B provided in the expansion joint device 100 set in the second step (S102) and the second step (S102) of setting the bridge to be installed with a certain distance between the top plate and the top plate A third step (S103) of coupling the rainwater induction bracket 350 and the perforated pipes 310A and 310B to the rainwater induction bracket 350 by installing the rainwater induction bracket 350 on the side wall surface of the concrete layer of the bridge so as to couple In the state in which the perforated pipes 310A and 310B and the rainwater induction bracket 350 are combined by step S103, rainwater can be introduced so that the perforated pipes 310A and 310B are buried between the expansion joint 100 and the upper plate of the bridge. It is preferable to include a fourth step (S104) of fixing the expansion joint device 100 by pouring the futa concrete 200 to form a water permeable layer.

As shown, the expansion joint device 100 provided in the first step (S101) is installed at a certain distance between the top plate and the top plate of the bridge, and absorbs the behavior of the bridge elongation and contraction according to the temperature change. has a structure that

The expansion joint device 100 includes the left and right upper plates 110A and 110B, the left and right side plates 120A and 120B, the joint 130, the upper waterproof rubber sheet 140, the upper rubber base 142, and the fixing member 144. , the lower waterproof rubber sheet 150, the lower rubber support 152, the fastening member 154, and it is preferable to be configured to include a draining unit 300, and the like. The present invention can be installed in a parallel state as shown in Fig. 4 or inclined as shown in Fig. 5, and when installed at an angle, the drainage effect can be maximized.

The upper plates 110A and 110B are composed of a pair of left and right upper plates facing each other, and are installed to have a mutually constant distance between the upper plate and the upper plate of the bridge to respond to the expansion and contraction of the bridge cooling while approaching or spaced apart from each other.

The left and right side plates 120A and 120B are respectively installed on the bottom surfaces of the left and right upper plates 110A and 110B to form a space between the left and right side plates 120A and 120B.

The joint 130 is connected to the left and right side plates 120A and 120B, respectively, and is embedded in the rear concrete part. Accordingly, the expansion joint device 100 can form a body with the bridge.

On the other hand, the expansion joint device 100 adopts a double rubber structure to increase durability by preventing secondary defects such as leakage and rust of the lower structure due to damage to the upper and lower waterproof rubber sheets 150 . It is preferable to do

Specifically, the upper waterproof rubber sheet 140 and the lower waterproof rubber sheet 150 are applied to the expansion joint device 100 at a predetermined interval. At this time, it is preferable that the upper waterproof rubber sheet 140 and the lower waterproof rubber sheet 150 have different shapes.

Since the upper waterproof rubber sheet 140 and the lower waterproof rubber sheet 150 are dually applied, it is possible to increase durability by preventing secondary defects such as water leakage and rust of the lower structure due to damage to one of them. there will be

In particular, in the case of the expansion joint device 100, it is possible to provide the convenience of operation by applying the lower waterproof rubber sheet 150, which is easy to work, as a replacement type.

In addition, the upper waterproof rubber sheet 140 is disposed in the upper region of the space formed between the left and right side plates 120A and 120B adjacent to the left and right upper plates, and serves to provide a waterproof function at the corresponding position.

It is preferable that the upper waterproof rubber sheet 140 be fixed at the corresponding position by the fixing member 144 via the upper rubber support 142 as a medium.

In addition, it is preferable that the upper waterproof rubber sheet 140 is stretchable and bent in a predetermined shape, and it is preferable to provide a more effective waterproof function by such a shape or structural feature.

Meanwhile, the upper rubber support 142 serves to support one side of the upper waterproof rubber sheet 140 .

And, the fixing member 144 serves to fix the upper waterproof rubber sheet 140 to the left and right side plates 120A and 120B via the upper rubber support 142 . At this time, the fixing member 144 is a rivet, and the rivet is fastened from the outside to the inside of the left and right side plates 120A and 120B. Therefore, the upper waterproof rubber sheet 140 can be firmly fixed.

In addition, the lower waterproof rubber sheet 150 is disposed in the lower region of the space formed between the left and right side plates 120A and 120B so as to be spaced apart from the lower portion of the upper waterproof rubber sheet 140 by a predetermined distance, at the corresponding position. It serves as a waterproof function.

The lower waterproof rubber sheet 150 may also be fastened to the corresponding position by the fastening member 154 via the lower rubber base 152 .

In addition, the lower rubber sheet 150 for waterproofing is stretchable and bent in a predetermined shape, so that it is possible to provide a more effective waterproofing function by such a shape or structural feature.

In particular, it is preferable to provide a flat portion 150a in the middle portion of the lower waterproof rubber sheet 150 to support the induction drain pipe 320 . The guide drain pipe 320 can be stably installed structurally by being installed so that the guide drain pipe 320 is supported on the flat part 150a.

Meanwhile, the lower rubber support 152 serves to support one side of the lower waterproof rubber sheet 150 .

And, the fastening member 154 serves to fasten the lower waterproof rubber sheet 150 to the left and right side plates 120A and 120B via the lower rubber support 152 as a medium. At this time, the fastening member 154 is a wrench bolt that is detachably coupled at the corresponding position for replacement of the lower waterproof rubber sheet 150, and the wrench bolt is fastened from the inside to the outside of the left and right side plates 120A and 120B. Therefore, the lower waterproof rubber sheet 150 can be firmly fixed, and the lower waterproof rubber sheet 150 can be easily replaced.

The expansion joint device 100 having such a structure can increase durability by preventing secondary defects such as water leakage and rust of the lower structure due to damage to the upper and lower waterproof rubber sheets 150 .

Meanwhile, the expansion joint device 100 may install both the upper and lower waterproof rubber sheets 150 as shown in FIG. 6 or only the upper waterproof rubber sheets as shown in FIG. 7 .

In addition, the guiding drainage unit 300 provided in the expansion joint device 100 and capable of inducing drainage of rainwater along the slope of the bridge includes perforated pipes 310A and 310B, guiding drain pipes 320, and through-holes 330. , And, it is preferably configured to include a fixing bracket (340).

The perforated pipes 310A and 310B are preferably installed on the left and right so that one end is fixed to the outside of the left and right side plates 120A and 120B so as to be embedded in the futa concrete, and the perforated pipes 310A and 310B are made of a stainless material. desirable.

In addition, both ends of the induction drain pipe 320 are fixedly installed inside the left and right side plates 120A and 120B so that the perforated pipes 310A and 310B installed on the left and right sides are connected to each other. That is, the induction drain pipe 320 is installed to be disposed in the space formed by the left and right side plates 120A and 120B, and the water flowing in through the perforated pipes 310A and 310B passes through the inside of the expansion joint device 100. guide you to do

At this time, the induction drain pipe 320 has a stretchable structure, and may preferably be a bellows-type perforated pipe.

The guide drain pipe 320 is preferably installed to be disposed between the upper waterproof rubber sheet 140 and the lower waterproof rubber sheet 150, which is located between the upper waterproof rubber sheet 140 and the lower waterproof rubber sheet 150. can be protected from the external environment.

In addition, the through hole 330 is formed in the left and right side plates 120A and 120B to which the induction drain pipe 320 and the perforated pipe 310A, 310B are fixed so that the induction drain pipe 320 and the left and right perforated pipes 310A and 310B communicate with each other. do. Rainwater can move to the perforated pipes 310A and 310B through the through-holes 330 through the induction drain pipe 320 and the induction drain pipe 320 into the perforated pipes 310A and 310B.

The fixing bracket 340 may be respectively installed on the left and right side plates 120A and 120B so as to be adjacent to the through hole 330 to fix the induction drain pipe 320 and the perforated pipes 310A and 310B.

These fixing brackets 340 are fixed to the left and right side plates, and a first flange 342 in which a through hole 341 is formed to correspond to the through hole 330 in the center, and an annular shape on one surface of the first flange 342 . A first coupling protrusion 344 formed to protrude and inserted into the ends of the perforated pipes 310A and 310B and the induction drain pipe 320, and the first coupling protrusion 344 and the perforated pipes 310A and 310B and the induction drain pipe It is preferable to include a first fixing part 346 made of a fixing bolt or rivet to fix the 320, respectively.

It is preferable that the induction drain unit 300 is installed such that the induction drain pipe 320 and the perforated pipes 310A and 310B are disposed between the plurality of joints 130 . That is, the induction drain pipe 320 and the perforated pipe 310A, 310B of the induction drain unit 300 are preferably installed at intervals of 1.5 to 2.5M along the longitudinal direction on the left and right side plates 120A and 120B, preferably It is desirable to be installed at an interval of 1.8M. Therefore, the induction drainage unit 300 may drain the rainwater along the gradient of the bridge.

The expansion joint device 100 having such a structure is set on the bridge to be installed between the top plate and the top plate of the bridge by the second step (S102).

In addition, the rainwater induction bracket 350 installed on the side wall of the concrete layer of the bridge to couple the perforated pipes 310A and 310B in the third step (S103) fixes the outer ends of the perforated pipes 310A and 310B, and the induction It serves to guide and drain the rainwater moved through the drain pipe 320 .

This rainwater induction bracket 350 is fixed to the side of the concrete layer of the bridge top plate, and a second flange 352 having a drainage hole 351 formed in the center, and formed to protrude in an annular shape from one surface of the second flange 352 . A second coupling protrusion 354 inserted into the end of the perforated pipe 310A, 310B, and a second fixing part 356 made of a fixing bolt to fix the second coupling protrusion 354 and the perforated pipe 310A, 310B. ) is preferably configured to include.

In addition, it is preferable that the rainwater guide bracket 350 is provided with a guide part 358 installed on the opposite side of the second coupling protrusion 354 to guide the rainwater to drain.

The guide 358 is installed to be connected to a drain pipe (not shown) provided in the bridge and serves to guide the drained rainwater to the drain pipe.

On the other hand, the fourth step (S104) is a step of fixing the expansion joint device 100 to the bridge, and is a step of pouring futa concrete between the expansion joint device 100 and the upper plate of the bridge. At this time, it is preferable that the futa concrete be made of a water permeable layer so that rainwater can flow in.

Therefore, in the present invention, as the induced drainage unit 300 is installed at regular intervals inside the expansion joint device 100, the rainwater flowing in from the asphalt layer above the bridge is discharged along the gradient of the bridge. It can be constructed to induce drainage through the interior of the , which is a feature of the present invention.

According to the present invention, rainwater drained from the upper part of the bridge is primarily induced by the stainless steel perforated pipe 310A embedded in the futa concrete, and the bellows type guiding drain pipe 320 installed inside the expansion joint device 100. After passing through the secondary movement, it can be induced and drained tertiarily through the stainless steel perforated pipe 310B installed on the other side.

Specifically, when the bridge is installed to have a slope, by constructing the expansion joint device 100 to be inclined along the slope of the bridge, the left and right perforated pipes 310A and 310B disposed on both sides of the induction drain pipe 320 are constructed to form an inclination. . That is, the perforated pipe 310A located on one side of the induction drain pipe 320 is located on the side with a high inclination, and the perforated tube 310B located on the other side of the induction drain pipe 320 is constructed to be located on the side with a low inclination.

Therefore, in a bridge that is installed to have a gradient, rainwater drainage is not completely drained to both sides of the bridge, but flows through the upper part of the bridge along the gradient of the bridge. After the first inflow into the perforated pipe 310A located on the side, it is secondarily moved through the induction drain pipe 320 and is tertiarily drained through the perforated pipe 310B located on the side with a low inclination.

At this time, the rainwater induction bracket 350 coupled to the end of the perforated pipe 310B located on the low side is connected to the drain pipe provided in the bridge, so that the drained rainwater can be finally drained through the drain pipe.

The technical problem of the present invention is achieved by the technical configuration as described above, and although described with reference to the limited embodiments and drawings, the present invention is not limited thereto and the present invention is not limited thereto by those of ordinary skill in the art. It goes without saying that various modifications and variations are possible within the scope of equivalents of the technical spirit and the claims to be described below.

S101 - First Step S102 - Second Step
S103 - Step 3 S104 - Step 4
100 - Expansion joint 110A, 110B - Left and right upper plate
120A, 120B - Left and right side plates 130 - Joint
140 - Rubber sheet for upper waterproofing 150 - Waterproofing sheet for lower portion
200 - Futa concrete part 300 - Induction drainage part
310A, 310B - Left and right perforated pipe 320 - Guided drain pipe
330 - through hole 340 - fixing bracket
350 - Rainwater induction bracket

Claims (6)

delete A first step of providing an expansion joint device including a guide drain pipe and a perforated pipe capable of guiding rainwater to be drained along the slope of the bridge at regular intervals;
a second step of setting the expansion joint provided in the first step to the bridge so as to be installed at a predetermined distance between the top plate and the top plate of the bridge;
A third step of installing a rainwater induction bracket on the side wall of the concrete layer of the bridge so as to couple the end of the perforated pipe provided in the expansion joint device set in the second step, and coupling the rainwater inducing bracket and the perforated pipe; and
In a state in which the perforated pipe and the rainwater induction bracket are combined by the third step, the second concrete is poured so that the perforated pipe is buried between the expansion joint device and the upper plate of the bridge, the permeable layer through which rainwater can flow in, to fix the expansion joint device. Step 4;
including,
The expansion joint device provided in the first step is:
Left and right upper plates that are installed to have a certain distance from each other and approach or spaced apart from each other between the upper plate and the upper plate of the bridge; left and right side plates respectively installed on the bottom surfaces of the left and right upper plates to form an inner space; a plurality of joints respectively connected to the left and right side plates and embedded in the futa concrete; an upper waterproofing rubber sheet provided with both ends fixed to the inside of the left and right side plates to be disposed in the upper region of the space, and providing a waterproof function at the corresponding position; and a lower waterproof rubber sheet having both ends fixed to the inside of the left and right side plates so as to be spaced apart from the lower portion of the upper waterproof rubber sheet and disposed in the lower region of the space, providing a waterproof function at the corresponding position;
The induction drain unit:
Left and right perforated pipes having one end fixed to the outside of the left and right side plates so as to be embedded in the futa concrete; a flexible induction drain pipe having both ends fixedly installed inside the left and right side plates to be connected to the left and right perforated pipes and disposed in the space; a through hole formed in the left and right side plates to which the induction drain pipe and the perforated pipe are fixed so that the induction drain pipe and the left and right perforated pipes communicate with each other; and fixing brackets respectively installed on the left and right side plates so as to be adjacent to the through hole to fix the induction drain pipe and the perforated pipe.
3. The method of claim 2,
The guide drain pipe is made of a bellows type, and is installed to be disposed between the upper waterproof rubber sheet and the lower waterproof rubber sheet.
3. The method of claim 2,
The upper waterproof rubber sheet and the lower waterproof rubber sheet are formed to be stretchable and bent into a predetermined shape, and the middle portion of the lower waterproof rubber sheet is provided with a flat portion to support the guide drain pipe, and the guide drain pipe is provided in the flat portion. A construction method of an expansion joint device using an induction drain pipe, characterized in that it is installed to be supported.
3. The method of claim 2,
The fixing bracket is:
a first flange fixed to the left and right side plates and having a through hole formed in the center thereof to correspond to the through hole; a first coupling protrusion formed to protrude in an annular shape from one surface of the first flange and inserted into the ends of the perforated pipe and the induction drain pipe; and a first fixing part made of a fixing bolt or rivet to respectively fix the first coupling protrusion and the perforated pipe and the first coupling protrusion and the guide drain pipe.
3. The method of claim 2,
The rainwater guide bracket is:
a second flange fixed to the side wall of the concrete layer of the bridge top plate and having a drainage hole formed in the center; a second coupling protrusion formed to protrude in an annular shape from one surface of the second flange and inserted into the end of the perforated pipe; and a second fixing part made of a fixing bolt to fix the second coupling protrusion and the perforated pipe.
A guide part for guiding the drainage of rainwater to the opposite side of the second coupling protrusion; Construction method of an expansion joint device using a guide drain pipe, characterized in that it is installed to be connected.

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