CN221029660U - Fish belly type box girder supporting die frame - Google Patents

Abstract

The utility model discloses a fish belly type box girder supporting die frame which comprises a plurality of die frame sections, wherein the die frame sections are arranged at intervals along the length direction of a box girder, two adjacent die frame sections are detachably connected, each die frame section comprises a middle section and two flank sections, the two flank sections are detachably and symmetrically connected to two sides of the middle section, the die frame sections also comprise a first moving part and a second moving part, the first moving part is arranged at the bottom of the middle section and used for driving the middle section to move along the width direction of the box girder, and the second moving part is arranged at the bottom of the flank sections and used for driving the flank sections to move along the length direction of the box girder.

Description

Fish belly type box girder supporting die frame

Technical Field

The utility model relates to the technical field of bridge construction, in particular to a fish belly type box girder supporting formwork.

Background

In recent years, with the rapid increase of traffic volume, the problems of oblique cracking of webs, overlarge mid-span deflection and the like commonly occur after the operation of the existing concrete box girder bridge for a period of time, and the use requirements of many box girder bridges are difficult to meet. With the updating of the design concept of the continuous bridge, the structural section size is continuously optimized, and the box girder bridge gradually develops to a high width-span ratio and a large cantilever. The large cantilever fish-bellied box girder, also called streamline box girder, has the advantages that the edge web plate is designed to be streamline, the modeling is graceful, and the large cantilever fish-bellied box girder has good torsion resistance, bending resistance and wind resistance, and the urban landscapes and wind resistance are perfectly combined, so that the large cantilever fish-bellied box girder is widely applied to urban viaducts and interchange ramp bridges, and the box girder is usually built in a cast-in-place mode nowadays, and a box Liang Mojia is required to be erected on a construction site to bear the self weight and the working load of the box girder.

The invention discloses a construction method of an inverted splayed cast-in-situ arc-shaped wing web formwork system, which is characterized by comprising the following steps of: firstly, field leveling and foundation treatment; bending the bent steel pipe; thirdly, setting up a full bowl buckle scaffold; fourthly, installing a bottom die and prepressing a bracket; (V) installing a wing plate template; (six) eliminating inelastic deformation; (seventh) measuring elastic deformation; and (eight) installing reinforcing steel bars and assembling an inner die. The invention adopts the bowl-buckled scaffold wood pattern to form the box Liang Mojia system, utilizes the existing bending machine to complete the bending of the steel pipe and replaces the heavy steel mould with the bamboo plywood to form the arc-shaped wing plate template system, and can better utilize the advantages of space and time so as to achieve the aim of rapid construction.

However, the scaffold which needs to be directly built on the ground/road surface in the construction process of the box girder formwork is low in construction efficiency, construction quality and safety are difficult to ensure, and the formwork is difficult to adjust and dismantle in the construction and installation process.

Disclosure of utility model

The utility model provides a fish belly type box girder supporting formwork which aims to solve the technical problems that the existing box girder formwork is low in construction efficiency and difficult to guarantee in construction quality and safety.

According to one aspect of the utility model, there is provided a fish belly type box girder supporting formwork, comprising a plurality of formwork sections which are arranged at intervals along the length direction of the box girder, wherein two adjacent formwork sections are detachably connected, each formwork section comprises a middle section and two flank sections, the two flank sections are detachably and symmetrically connected to two sides of the middle section, and each formwork section further comprises a first moving piece which is arranged at the bottom of the middle section and is used for driving the middle section to move along the width direction of the box girder and a second moving piece which is arranged at the bottom of the flank section and is used for driving the flank sections to move along the length direction of the box girder.

As a further improvement of the above technical scheme:

Further, the flank section comprises a second supporting frame arranged on the second moving piece and an arc-shaped die carrier arranged on the top of the second supporting frame.

Further, the arc-shaped die carrier comprises a supporting base arranged on the top of the second supporting frame, an arc-shaped supporting tube arranged on the supporting base, a vertical supporting tube connected with the supporting base and the arc-shaped supporting tube respectively and an inclined supporting tube connected with the supporting base and the arc-shaped supporting tube respectively, and the arc shape of the arc-shaped supporting tube is used for being matched with the line shape of the box girder.

Further, the second moving member comprises a second adjustable jacking arranged at the bottom of the second supporting frame and a second moving wheel arranged at the bottom of the second supporting frame.

Further, the middle section comprises a first supporting frame arranged on the first moving piece and a horizontal die carrier arranged on the top of the first supporting frame.

The first moving part comprises a first adjustable jacking arranged at the bottom of the first supporting frame and a first moving wheel arranged at the bottom of the first supporting frame.

Further, the formwork section also comprises a guard rail arranged on the end part of the flank section far away from the middle section.

Further, the mould frame sections further comprise connecting pieces, the middle sections and the flank sections are detachably connected through the connecting pieces, and the two connected mould frame sections are detachably connected through the connecting pieces.

Further, the connecting piece comprises a connecting pipe and a connecting fastener arranged on the axial end part of the connecting pipe.

Further, the box girder supporting die carrier further comprises a hoop which is connected with the die carrier section and is used for connecting the box girder bridge pier.

The utility model has the following beneficial effects:

The fish-bellied box girder supporting formwork of the utility model is characterized in that a prefabricated middle section and side wing sections are transported to a construction site, splicing and connecting of a plurality of formwork sections are completed along the length direction of a box girder between first bridge span piers to form the fish-bellied box girder supporting formwork, then a formwork is laid on the fish-bellied box girder supporting formwork to form a supporting formwork system for pouring the first bridge span box girder, a plurality of middle sections are arranged between second bridge span piers, after the pouring of the first bridge span box girder is completed, the plurality of formwork sections are sequentially removed, acting force is applied to the side wing sections, so that the side wing sections are moved to the position between the second bridge span piers along the length direction of the box girder to be spliced with the middle sections through a second moving piece, a supporting formwork system for pouring the second bridge span box girder is formed, after the pouring of the second bridge span piers is completed, the middle section construction acting force between the first bridge span piers is applied, the method comprises the steps of moving a middle section to the outside of a first bridge span in the width direction of a box girder through a first moving part, lifting the middle section to the position between third bridge spans through lifting equipment, and circularly reciprocating the middle section until pouring of all the bridge spans is completed, compared with the prior art, the method has the advantages that the conventional scaffold is subjected to modularized treatment according to sections and sections, the mounting difficulty of the box girder supporting formwork can be greatly reduced, the mounting and dismounting efficiency of the box girder supporting formwork is improved, meanwhile, the number of splicing sections of the formwork sections can be flexibly controlled to be suitable for bridges with different spans, the overall stability of the spliced box girder supporting formwork is higher, the safety is better in the construction process, the formwork sections are formed by splicing one section of middle section and two sections of flank sections, the flank sections can directly pass through the bridge spans along the length direction of the box girder for circulation, and further, modular combined translation of the box girder supporting die carrier among different spans is realized, so that the continuous casting construction efficiency and safety of the straight-line section large cantilever fish-web type box girder are greatly improved.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic structural view of a fish belly type box girder supporting formwork according to a preferred embodiment of the present utility model;

Fig. 2 is a schematic structural view of a fish belly type box girder supporting formwork according to a preferred embodiment of the present utility model;

FIG. 3 is a schematic view of a part of a fish-bellied box girder supporting formwork according to a preferred embodiment of the present utility model;

Fig. 4 is a schematic view of a part of a fish-bellied box girder supporting formwork according to a preferred embodiment of the present utility model.

Legend description:

100. A mould frame section; 200. a middle section; 210. a first support frame; 220. a horizontal die carrier; 300. a wing section; 310. a second support frame; 320. arc-shaped mould frame; 321. a support base; 322. an arc-shaped support tube; 323. a vertical support tube; 324. a diagonal support tube; 400. a first moving member; 410. a first adjustable jacking; 420. a first moving wheel; 500. a second moving member; 510. a second adjustable jacking; 520. a second moving wheel; 600. a guard rail; 700. a connecting piece; 800. and (5) hooping.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawing figures, but the utility model can be practiced in a number of different ways, as defined and covered below.

Fig. 1 is a schematic structural view of a fish belly type box girder supporting formwork according to a preferred embodiment of the present utility model; fig. 2 is a schematic structural view of a fish belly type box girder supporting formwork according to a preferred embodiment of the present utility model; FIG. 3 is a schematic view of a part of a fish-bellied box girder supporting formwork according to a preferred embodiment of the present utility model; fig. 4 is a schematic view of a part of a fish-bellied box girder supporting formwork according to a preferred embodiment of the present utility model.

As shown in fig. 1 and 2, the fish belly type box girder supporting formwork of this embodiment includes a plurality of formwork sections 100 arranged at intervals along the length direction of the box girder, two adjacent formwork sections 100 are detachably connected, each formwork section 100 includes a middle section 200 and two flank sections 300, the two flank sections 300 are detachably and symmetrically connected to two sides of the middle section 200, the formwork section 100 further includes a first moving member 400 arranged at the bottom of the middle section 200 and used for driving the middle section 200 to move along the width direction of the box girder, and a second moving member 500 arranged at the bottom of the flank sections 300 and used for driving the flank sections 300 to move along the length direction of the box girder. Specifically, the fish-bellied box girder supporting formwork of the utility model is formed by transporting the prefabricated middle section 200 and the flank sections 300 to a construction site, completing the assembly connection of a plurality of formwork sections 100 along the length direction of the box girder between first bridge span piers to form the fish-bellied box girder supporting formwork, then paving templates on the fish-bellied box girder supporting formwork to form a supporting formwork system for casting the first bridge span box girder, simultaneously arranging a plurality of middle sections 200 between second bridge span piers, after the first bridge span box girder is cast, sequentially removing the plurality of formwork sections 100 and exerting a force on the flank sections 300, so as to move the flank sections 300 along the length direction of the box girder to the second bridge span piers through the second moving member 500 for assembly with the middle section 200, and then form the support die carrier system of pouring the second and stride the case roof beam, after the second is strided bridge pier and poured and accomplished, construct effort to the middle section 200 between the first and stride bridge piers, in order to move the middle section 200 to outside the first and stride bridge pier along the width direction of the case roof beam through the first moving member 400, and then hoist to the third and stride bridge pier through the overhead hoist, in order to circulate reciprocally, until pouring of all striding the case roof beam is accomplished, this scheme is compared with the prior art, through the modularization processing according to section by section with the conventional scaffold, not only can reduce the installation difficulty of the case roof beam support die carrier greatly, raise the efficiency that the case roof beam supports die carrier and installs and dismantle, can also be suitable for the bridge of different spans through the flexible control of the concatenation section number of the die carrier section 100 at the same time, and the spliced box girder supporting die carrier is higher in overall stability, better in safety in the construction process, the die carrier section 100 is formed by splicing one section of middle section 200 and two sections of flank sections 300, the turnover use is carried out by additionally arranging one span of middle section 200, and the flank sections 300 can directly cross the bridge pier to move to the next span along the length direction of the box girder for recycling, so that the modular combination translation of the box girder supporting die carrier among different spans is realized, and the continuous casting construction efficiency and safety of the straight-line section large cantilever fish-web type box girder are greatly improved. It should be understood that existing fish-bellied box girders are often provided with a plurality of cross-box girders in a straight line direction, and two adjacent cross-box girders are separated by a bridge pier. It should be understood that the distance between the wing segments 300 on both sides in the formwork section 100 is greater than the bridge pier width, so that the wing segments 300 can directly move to the next span for recycling along the forward bridge direction beyond the bridge pier, but the middle segment 200 cannot move to the next span along the forward bridge direction directly under the influence of the bridge pier position, so that the middle segment 200 needs to be additionally used in the next span.

As shown in fig. 4, in the present embodiment, the lateral wing section 300 includes a second supporting frame 310 disposed on the second moving member 500 and an arc-shaped mold frame 320 disposed on top of the second supporting frame 310. Specifically, the arc-shaped formwork 320 is vertically supported by the second support frame 310, and then the template is supported by the arc-shaped formwork 320, so that the cross-box girder flank can be cast and formed. Optionally, a second adjustable jacking 510 is disposed between the arc-shaped mold frame 320 and the second supporting frame 310.

As shown in fig. 4, in this embodiment, the arc-shaped mold frame 320 includes a support base 321 disposed on top of the second support frame 310, an arc-shaped support tube 322 disposed on the support base 321, a vertical support tube 323 connected with the support base 321 and the arc-shaped support tube 322, respectively, and an inclined support tube 324 connected with the support base 321 and the arc-shaped support tube 322, respectively, wherein the arc shape of the arc-shaped support tube 322 is used for matching with the line shape of the box girder. Specifically, the vertical support pipe 323 and the inclined support pipe 324 are installed through the support base 321, the arc support pipe 322 is reliably installed through the vertical support pipe 323 and the inclined support pipe 324, the template is installed through the arc support pipe 322, and the arc shape of the arc support pipe 322 is matched with the line shape of the box girder so as to ensure that the shape of the box girder formed by pouring meets the requirement.

As shown in fig. 4, in the present embodiment, the second moving member 500 includes a second adjustable jacking 510 disposed at the bottom of the second supporting frame 310 and a second moving wheel 520 disposed at the bottom of the second supporting frame 310. Specifically, the second supporting frame 310 is supported stably by adjusting the second adjustable jacking 510, and the second moving wheel 520 is used for facilitating the force application to move the wing segment 300.

As shown in fig. 3, in the present embodiment, the middle section 200 includes a first support frame 210 disposed on the first moving member 400 and a horizontal mold frame 220 disposed on top of the first support frame 210. Specifically, the horizontal formwork 220 is vertically supported by the first support frame 210, and then the horizontal formwork 220 supports the formwork, so that the middle part of the cross-box girder can be poured and formed. It should be appreciated that the top line shape of the horizontal formwork 220 coincides with the middle line shape of the box girder. Optionally, a first adjustable jacking 410 is disposed between the first support frame 210 and the horizontal mold frame 220.

As shown in fig. 3, in the present embodiment, the first moving member 400 includes a first adjustable jack 410 disposed at the bottom of the first support frame 210 and a first moving wheel 420 disposed at the bottom of the first support frame 210. Specifically, the first supporting frame 210 is supported stably by adjusting the first adjustable jacking 410, and the intermediate section 200 is moved by the first moving wheel 420.

As shown in fig. 4, in this embodiment, the scaffold segment 100 further comprises a guard rail 600 arranged on the end of the lateral wing segment 300 remote from the middle segment 200. Specifically, safety during the pouring construction of the box girder is improved by the guard rail 600 to prevent an operator from accidentally falling from both sides when a form is laid on the box girder supporting formwork or concrete pouring is performed. Optionally, a safety net is laid on the guard rail 600.

As shown in fig. 1 and 2, in this embodiment, the mold frame segment 100 further includes a connecting member 700, the middle section 200 and the side wing sections 300 are detachably connected by the connecting member 700, and the two mold frame segments 100 are detachably connected by the connecting member 700. Specifically, in the mold frame segments 100, the middle section 200 and the lateral wing sections 300 are detachably connected through the connecting members 700, so that the mold frame segments 100 can be disassembled and assembled, and between two adjacent mold frame segments 100, two adjacent middle sections 200 are detachably connected through the connecting members 700, and two adjacent lateral wing sections 300 are detachably connected through the connecting members 700.

In this embodiment, the connection member 700 includes a connection pipe and a connection fastener disposed on an axial end of the connection pipe. Specifically, the two axial ends of the connecting pipe are detachably connected with the middle section 200 and the wing sections 300 through connecting fasteners, or are detachably connected with the two middle sections 200, or are detachably connected with the two wing sections 300, respectively, so as to facilitate disassembly and assembly. Optionally, the middle section 200 and the side wing sections 300 are detachably connected by a plurality of connectors 700 arranged at intervals in the horizontal and/or vertical directions to ensure reliable connection.

As shown in fig. 2, in this embodiment, the girder supporting formwork further includes a hoop 800 connected to the formwork section 100 for connecting the girder bridge pier. Specifically, after the assembly of the plurality of formwork sections 100 under the bridge pier is completed, the formwork sections 100 close to the box girder bridge pier are connected with the bridge pier through the anchor ear 800 so as to fix the box girder supporting formwork and improve the stability of the bridge girder in pouring.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a fish belly formula case roof beam supports die carrier, a serial communication port, including a plurality of die carrier sections (100) that are used for following case roof beam length direction interval arrangement, two adjacent die carrier sections (100) can dismantle the connection, die carrier section (100) are including middle festival (200) and two flank festival (300), two flank festival (300) detachably symmetrical connection are in the both sides of middle festival (200), die carrier section (100) still including being arranged in the bottom of middle festival (200) be used for driving middle festival (200) along first moving member (400) of case roof beam width direction removal and lay in second moving member (500) that are used for driving flank festival (300) along case roof beam length direction removal of the bottom of flank festival (300).

2. The fish belly type box girder supporting formwork according to claim 1, wherein the wing sections (300) comprise a second supporting frame (310) arranged on the second moving member (500) and an arc-shaped formwork (320) arranged on top of the second supporting frame (310).

3. The fish belly type box girder supporting formwork according to claim 2, wherein the arc formwork (320) comprises a supporting base (321) arranged on the top of the second supporting frame (310), an arc supporting tube (322) arranged on the supporting base (321), a vertical supporting tube (323) respectively connected with the supporting base (321) and the arc supporting tube (322), and an inclined supporting tube (324) respectively connected with the supporting base (321) and the arc supporting tube (322), and the arc shape of the arc supporting tube (322) is used for matching with the box girder line type.

4. The fish belly type box girder supporting formwork of claim 2, wherein the second moving member (500) comprises a second adjustable jacking (510) arranged at the bottom of the second supporting frame (310) and a second moving wheel (520) arranged at the bottom of the second supporting frame (310).

5. The fish belly sill support form of any of claims 1-4 wherein the middle section (200) includes a first support frame (210) disposed on a first runner (400) and a horizontal form (220) disposed on top of the first support frame (210).

6. The fish belly type box girder supporting formwork of claim 5, wherein the first moving member (400) comprises a first adjustable jacking (410) arranged at the bottom of the first supporting frame (210) and a first moving wheel (420) arranged at the bottom of the first supporting frame (210).

7. A fish belly girder support formwork according to any one of claims 1-4, wherein the formwork section (100) further comprises a rail guard (600) arranged on the end of the flank section (300) remote from the middle section (200).

8. The fish belly girder supporting formwork of any one of claims 1-4, wherein the formwork sections (100) further comprise a connector (700), the middle section (200) and the side wing sections (300) are detachably connected by the connector (700), and the two formwork sections (100) are detachably connected by the connector (700).

9. The fish belly type girder supporting formwork of claim 8, wherein the connection member (700) comprises a connection pipe and a connection buckle disposed on an axial end portion of the connection pipe.

10. The fish belly type girder supporting formwork according to any one of claims 1 to 4, further comprising a hoop (800) connected to the formwork section (100) for connecting girder bridge piers.