Bridge beam arch rib section manufacturing process

A manufacturing process and technology of bridges, applied in the direction of bridges, bridge construction, bridge forms, etc., can solve the problems that cannot meet the requirements of matching assembly production, difficult to control the line camber, inconvenient connection, etc., and achieve the construction quality is easy to guarantee, The effects of shortening the assembly cycle and facilitating transportation and installation

Active Publication Date: 2016-05-18
中铁山桥(南通)有限公司
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  • Claims
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Problems solved by technology

After searching, it was found that the Chinese patent number 201310367055.1 proposed a bridge arch rib manufacturing method, including the following steps: 1) blanking and layout; 2) blanking; 3) rolling pipe; 4) welding internal reinforcement; Ground sample and assembled steel pipe; 6) Determine the position of the suspender, marked by punching holes; 7) Install the support at the position of the suspender and weld it; 8) Weld the butt weld of the pipe and pipe; 9) Weld the arch rib; 10) 1. Production of oblique supports; 11) Subsection production and pre-assembly; 12) Mark the subsections of the arch ribs, and one code for the same joint; 13) Paint;...

Method used

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  • Bridge beam arch rib section manufacturing process
  • Bridge beam arch rib section manufacturing process
  • Bridge beam arch rib section manufacturing process

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Embodiment

[0023] The manufacturing process of the arch rib section of the bridge in this embodiment is as follows:

[0024] (1) Assembly of trusses: The overall trusses of the main truss of the arch rib are composed of upper chord 1, lower chord 2, straight web 3, and oblique web 4, and a single internode is a truss;

[0025] The overall truss is assembled by multi-segment continuous matching, that is, each round is assembled with no less than 5 segments, and the open-air assembly is carried out under the condition of no sunshine; when assembling, if figure 1 As shown, firstly, the upper chord 1 and the lower chord 2 are positioned in parallel on the tire frame A, and the tire frame A is set according to the arch rib of the bridge, and the chord positioning piers and the oblique pole positioning piers are also arranged on the tire frame A, and the Set up temporary buttresses and limit gear angles; through adjustment, reserve 3mm welding shrinkage between upper chord 1 and lower chord 2...

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Abstract

The invention relates to a bridge beam arch rib section manufacturing process. The manufacturing process comprises the three steps of truss piece splicing, wind bracing transverse combination splicing and integral section splicing. The bridge beam arch rib section manufacturing process has the advantages that multi-section matching and splicing are adopted, and for each section, related components can be matched and spliced by means of specific jig frames, so that line-type precision of arch rib sections is ensured; labor amount of integral pre-assembly of the bridge beam arch rib sections is reduced, the splicing period is shortened, and working efficiency is promoted.

Description

technical field [0001] The invention belongs to the technical field of bridge manufacturing, and in particular relates to a manufacturing process of a bridge arch rib section. Background technique [0002] With the increasing number of railway and highway construction projects in our country, more and more bridges are being built in deep mountains and canyons with poor natural conditions, especially long-span steel arch bridges, because this structure is especially suitable for deep valleys and rapid construction. The plateau canyon area with harsh environment. Therefore, more and more attention is paid to the manufacturing method of bridge arch ribs, especially for the unfavorable situation of construction conditions, then its manufacturing method just seems to be particularly important. [0003] Among the bridges studied by the present invention, the main bridge adopts a double-layer truss arch bridge with a mid-support type, and the span is arranged as 496m. The main lin...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D6/00E01D4/00
CPCE01D4/00E01D6/00E01D21/00
Inventor 那宪伟孔德超陈方能韩庆广郑毅张平王钦国
Owner 中铁山桥(南通)有限公司
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