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Construction method for integral lifting of single channel girders of single-span channel girder bridge

A technology of overall hoisting and construction methods, which is applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., to achieve the effects of saving construction costs, reducing ground foundation exploration and treatment, and speeding up construction progress

Active Publication Date: 2014-07-16
HAIOD HEAVY ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the difficult problem that temporary buttresses are required when erecting steel structure trough girder bridges, and to provide a construction method for the overall hoisting of single-piece steel channel girders of single-span trough girder bridges that do not require temporary buttresses during the construction process

Method used

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  • Construction method for integral lifting of single channel girders of single-span channel girder bridge
  • Construction method for integral lifting of single channel girders of single-span channel girder bridge
  • Construction method for integral lifting of single channel girders of single-span channel girder bridge

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Effect test

Embodiment 1

[0024] Embodiment 1: A kind of construction method of single-span trough girder bridge monolithic steel channel girder integral hoisting of the present invention is applied in bridge construction, and the typical trough girder bridge that the present invention is aimed at is as figure 1 As shown, it is a single-span simply supported girder channel girder bridge in the form of lattice girders. The structures involved in the construction of this bridge type include steel channel girders 1, connecting beams 2, and permanent piers 3. The construction method of the monolithic steel channel girder integral hoisting of the single-span channel girder bridge of the present invention is constructed according to the following steps:

[0025] (1) Division of hoisting units: hoisting units can be divided into two types, namely, steel channel beam hoisting units and connecting beam hoisting units. Since the channel girder bridge is composed of multiple steel channel beams 1 connected by mult...

Embodiment 2

[0029] Embodiment 2: A construction method for integral hoisting of a single-piece steel channel girder of a single-span trough-shaped girder bridge of the present invention is applied in bridge construction. The steel channel beam 1 is disassembled into five steel channel beam transport units 5 for manufacture and transportation, and other construction steps are the same as those in Embodiment 1.

[0030] The construction method for integral hoisting of a single-piece steel channel girder of a single-span channel girder bridge of the present invention is convenient for transportation, does not require temporary buttresses during the construction process, saves construction costs, can also speed up the construction progress, and reduce safety risks, and is suitable for steel The erection and installation of the single-span trough girder bridge of structural form can also be applied to other fields of similar structural types.

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Abstract

The invention relates to a construction method for integral lifting of single channel girders of a single-span channel girder bridge. The single-span channel girder bridge is provided with an integral grid-girder type singly supported girder formed by connecting a plurality of channel beams through a plurality of connecting cross beams. The construction method includes the steps: the single channel beams and the single connecting cross beams are used as lifting objects respectively, the short single connecting cross beams can be directly manufactured and transported while the long single channel beams are heavy and cannot be transported, each single channel beam needs to be divided into three to five transport objects for manufacturing and transport according to the transport length requirement in a manufacturer, the channel beam transport object sets which are split are assembled into the single channel beams on the ground of a bridge site, and a crane truck is used for directly and respectively lifting the integral single channel beams and the integral single connecting cross beams to the bridge position for installation according to a set sequence. No temperature pier is needed, so that high construction cost can be saved, construction progress can be quickened, safety risks are reduced, and the construction method is highly worthy of popularization to construction of similar bridges.

Description

technical field [0001] The invention relates to a construction method for integral hoisting of a single-piece steel channel girder of a single-span channel girder bridge, which belongs to the on-site erection and installation technology of large components, and is mainly applied to the erection and installation of channel girder bridges in the form of steel structures, and can also be applied to similar Other fields of the structure type. Background technique [0002] Beam bridges are mostly used in urban viaducts, and can be divided into reinforced concrete girder bridges, prestressed concrete girder bridges, steel structure girder bridges and concrete and steel composite structure girder bridges according to the different materials used. Reinforced concrete girder bridges mostly use formwork cast-in-place construction methods, and prestressed concrete girder bridges mostly use special bridge erecting machines for single-span single-piece erection and installation. Steel st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
Inventor 朱本芳叶顺宋涛
Owner HAIOD HEAVY ENG TECH