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Bridge with composite beam structure and construction method thereof

A technology for combining beams and bridges, which is used in bridges, bridge construction, erection/assembly of bridges, etc. It can solve the problem that concrete bridge decks with cantilevers are not suitable, the cantilever parts are difficult to hoist and construct, and it is difficult to meet the requirements of shear nail arrangement. and other problems, to achieve the effect of short construction period, convenient construction and good overall mechanical performance

Pending Publication Date: 2019-12-31
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) For the cluster arrangement, the form of post-casting shear nail groove is suitable for the concrete bridge deck structure with cantilever, which can realize the overall hoisting of the bridge deck, and has the advantages of convenient construction and short period, but the number of its arrangement is relatively limited. It is difficult to meet the layout requirements of shear studs for the parts with high shear force at the steel-concrete interface
[0004] (2) For distributed layout, the form of post-wetting joints, the number of shear studs can meet the demand of structural force, but it is not suitable for concrete bridge deck with cantilever, otherwise the cantilever part is difficult to hoist and construct

Method used

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  • Bridge with composite beam structure and construction method thereof
  • Bridge with composite beam structure and construction method thereof
  • Bridge with composite beam structure and construction method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] see image 3 with Figure 4 , The embodiment of the present invention provides a bridge with a composite girder structure, including an intermediate bridge deck 1, a cantilever bridge deck 2, steel girders 3, wet joints 4 and a stressed structure. Among them, the cantilever bridge deck 2 is arranged along the direction of the transverse bridge, and the two cantilever bridge decks 2 are respectively arranged on both sides of the middle bridge deck 1, and the steel girder 3 is arranged under the cantilever bridge deck 2 and the middle bridge deck 1, and supports the Referring to the middle bridge deck 1 and the cantilever bridge deck 2, the wet joint 4 is cast-in-place after hoisting, and it is between the middle bridge deck 1 and the cantilever bridge deck 2. In the prior art, see figure 1 with figure 2 , the combined form of distributed arrangement can arrange more shear studs 6, which can better meet the stress requirements of the structure, but this distributed co...

Embodiment 2

[0044] see image 3 with Figure 4 , an embodiment of the present invention provides a construction method for a bridge with a composite beam structure, comprising:

[0045] S1, prefabricating the middle bridge deck 1 and the cantilever bridge deck 2, but no pouring between the middle bridge deck 1 and the cantilever bridge deck 2;

[0046] S2, using a stressed structure to stabilize the connection between the intermediate bridge deck 1 and the cantilever bridge deck 2;

[0047] S3, setting a lifting point for the lifting equipment to grab on the stressed structure;

[0048] S4, welding and erecting shear stud 6 and steel beam 3;

[0049] S5, after the welding and erection of the shear nails 6 and the steel girder 3 are completed, the intermediate bridge deck 1 and the cantilever bridge deck 2 are hoisted in place through the lifting points as a whole, and the wet joints are cast in place After 4, they form an integrated force bearing together.

[0050] In the prior art, ...

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PUM

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Abstract

The invention relates to the technical field of bridge engineering and provides a bridge with a composite beam structure. The bridge with the composite beam structure comprises a middle bridge deck slab, cantilever bridge deck slabs arranged on the two sides of the middle bridge deck slab in the transverse direction of the bridge and a steel beam used for supporting the middle bridge deck slab andthe cantilever bridge deck slabs. The bridge with the composite beam structure further comprises wet joints between the middle bridge deck slab and the cantilever bridge deck slabs and a stress structure arranged in the transverse direction of the bridge and used for stabilizing connection between the middle bridge deck slab and the cantilever bridge deck slabs. A plurality of shear nails are evenly distributed in the wet joints. All the shear nails are arranged on the steel beam. The stress structure is provided with a lifting point allowing a lifting device to grab during conducting liftingoperation. The invention further provides a construction method. The construction method comprises the five steps from S1-S5. By the adoption of the bridge with the composite beam structure and the construction method, the stress structure is arranged to stabilize the connection between the middle bridge deck slab and the cantilever bridge deck slabs, so that the bridge can adopt the distributivearrangement combination manner, then more shear nails can be arranged, and therefore the stress demand of the structure can be better met.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a bridge with a composite beam structure and a construction method thereof. Background technique [0002] Composite beam structures are more and more widely used in my country due to their good economy, mechanical properties and construction convenience. There are two combinations of wet joints after distributed layout, but the current two combinations have the following disadvantages: [0003] (1) For the cluster arrangement, the form of post-casting shear nail groove is suitable for the concrete bridge deck structure with cantilever, which can realize the overall hoisting of the bridge deck, and has the advantages of convenient construction and short period, but the number of its arrangement is relatively limited. It is difficult to meet the layout requirements of shear studs for the parts with high shear force at the steel-concrete interface. [0004] (2) For distr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/00E01D21/00
CPCE01D2/00E01D21/00
Inventor 严爱国胡方杰文望青夏正春严定国张杰张晓江印涛王小飞吴孟畅
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP