Cantilever assembly construction technology for long span continuous steel truss girder flexible arch bridge

A construction technology and technology of steel truss girders, which are applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of difficult alignment, high safety risk, and long construction period, etc., so as to reduce construction difficulty and suffer The effect of clear force and more work surface

Inactive Publication Date: 2016-12-07
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a cantilever assembly construction process for a long-span continuous steel truss girder flexible arch bridge, which is used to solve the problem of difficulty in aligning the center dragons, long construction period, and problems in erecting large-span steel truss girder flexible arch bridges using the prior art. High Security Risk Issues

Method used

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  • Cantilever assembly construction technology for long span continuous steel truss girder flexible arch bridge
  • Cantilever assembly construction technology for long span continuous steel truss girder flexible arch bridge
  • Cantilever assembly construction technology for long span continuous steel truss girder flexible arch bridge

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Embodiment 1

[0043] combined with figure 1 As shown, a long-span continuous steel truss girder flexible arch bridge cantilever assembly construction technology includes the following steps:

[0044] (1) Install temporary buttresses and brackets next to the middle main pier in sequence;

[0045] (2) Install a full-slewing crane on the bracket next to the installed middle main pier;

[0046] (3) Assembly of steel truss beams;

[0047] (4) Closure of steel truss beams;

[0048] (5) Install arch ribs and arch rib chords in sequence;

[0049] (6) Adjust and correct the deviation of the steel truss girder.

[0050] In the present embodiment, the step (1) includes the following steps:

[0051] 1.1 Determine the installation location and structural size of the temporary pier: the temporary pier is respectively installed in the middle of the side spans on both sides and in the middle of each mid-span; the structure of the temporary pier is mainly composed of four sets of steel pipe piles, the ...

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Abstract

The invention discloses a cantilever assembly construction technology for a long span continuous steel truss girder flexible arch bridge. The cantilever assembly construction technology comprises the following steps of (1), sequentially installing side span temporary buttresses and a middle main pier side bracket; (2), installing a full-circle slewing crane on the installed middle main pier side bracket; (3), assembling steel truss girders; (4), joining the steel truss girders; (5), sequentially installing arch rib suspenders and arch rib chord members; and (6), adjusting and rectifying the steel truss girders. According to the cantilever assembly construction technology, double-cantilever symmetric assembling is adopted for fixed connection of the pier side bracket and the steel truss girders; middle temporary piers are adopted for assisting joining of a main span, and the overall stability in the assembling process can be ensured during typhoons; assembly of arch bridge sections is conducted by the full-circle slewing beam crane, aligning is fast, and safety and reliability are achieved; and the temporary buttresses are simple in structure, explicit in stress and convenient to construct, and the construction difficulty is greatly reduced.

Description

technical field [0001] The invention relates to the field of bridge construction technology, in particular to the construction technology of a large-span steel truss girder bridge, in particular to a cantilever assembly construction technology of a large-span continuous steel truss girder flexible arch bridge. Background technique [0002] The steel truss flexible arch bridge is one of the most competitive bridges among various types of bridges. It has many advantages such as large spanning capacity, fast construction speed, and convenient industrial manufacturing. At the same time, the steel truss flexible arch bridge also has strong typhoon resistance, The characteristics of good navigation adaptability. With the improvement of material performance and quality such as steel strength, toughness, and weldability, steel truss flexible arch bridges are more and more favored by bridge designers, and their applications are becoming more and more extensive. For example, the Huai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/10
CPCE01D21/10
Inventor 苏春生梁朋刚何十美汤振亚
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP OF THE FIFTH ENG
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