Arch-included integral pushing method for large-tonnage multi-span combined arch bridge

A large-tonnage, integrated technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of large cantilever jacking and weak force of combined arch bridges, and achieve high safety, low construction cost and clear force Effect

Active Publication Date: 2010-08-04
CCCC SECOND HARBOR ENG
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  • Abstract
  • Description
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Problems solved by technology

[0013] The purpose of the present invention is to provide a large-tonnage multi-span composite arch bridge with arch integral jacking method, realize the arch bridge with arch integral jacking, and solve the problems of weak local force and large cantilever jacking of the composite arch bridge

Method used

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  • Arch-included integral pushing method for large-tonnage multi-span combined arch bridge
  • Arch-included integral pushing method for large-tonnage multi-span combined arch bridge
  • Arch-included integral pushing method for large-tonnage multi-span combined arch bridge

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Embodiment Construction

[0038] Before explaining the technical aspects of the present invention, firstly, the related devices for realizing the method of the present invention are described, so as to facilitate the understanding of the present invention.

[0039] During the pushing process, it is necessary to support the main longitudinal beam and the walking translational pushing device. On the three structural piers 200 close to the multi-span steel arch beam assembly tool platform 100, side supports 300 are provided.

[0040] The structure of the support 300 next to the pier is as follows figure 1 As shown, two support frames 302 are arranged on both sides of the platform 301 respectively, and the two support frames 302 are arranged in a "V" shape, and a transverse connector 303 is connected between the upper ends of the two support frames. There is a load-bearing beam 304 on which a temporary pad beam 305 is arranged, and a transverse connecting rod 307 is connected between the support frame 302...

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Abstract

The invention discloses an arch-included integral pushing method for a large-tonnage multi-span combined arch bridge. The method comprises the following steps of: erecting multi-span steel arched girders on a bridge-axis backfield road to assemble a tool-type platform in an arch-after-girder sectionalized spanned way; after assembling the main arch and the subarches, installing temporary compression bars and temporary wind cables between the main arch ribs and steel girders, dismantling arch rib brackets, mounting a walking translation-type pushing device, and pushing the steel arched girders in the entire hole out of the assembling platform; and repeating the steps in the same way until all the multihole steel arched girders are assembled and integrally pushed in place. The method has the advantages of definite stress, simple device structure, complete function, convenient operation, high degree of automation, novelty, high safety and low construction cost, and well solves the problems of weak partial stress and requirements for large-cantilever pushing in the novel combined arch bridge.

Description

technical field [0001] The invention belongs to bridge construction technology, and in particular relates to a jacking construction method of a steel arch bridge. Background technique [0002] The jacking construction method of erecting bridges has been widely used at home and abroad, especially the jacking of prestressed continuous girder bridges, but they all use the dragging method; in recent years, with the development of bridge materials and hydraulic equipment, the jacking method has been used in steel It has been applied and popularized in the erection of girder bridges and cable-stayed bridges, but the old method of dragging and traction is basically used. In the erection of the Millau Bridge in France, the chi-jin type hydraulic jacking equipment was used, which further developed the jacking method. [0003] For large-tonnage multi-span composite arch bridges, such as 3×210m steel-concrete composite arch bridges located in strong tidal river sections, the river floo...

Claims

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Application Information

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IPC IPC(8): E01D21/00
Inventor 周光强张鸿姚平杨绍斌杨昌维詹光善吴晓红舒大勇傅琼阁申蒙黄耀文
Owner CCCC SECOND HARBOR ENG
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