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Method for intersection angle high-speed railway underpassing low-clearance girder erection

A technology of acute angle crossing and construction method, which is applied in the direction of erecting/assembling bridges, bridges, bridge construction, etc., and can solve the problems of beam erection construction and the inability to use bridge erection machines.

Active Publication Date: 2015-04-08
CHINA RAILWAY 24TH BUREAU GRP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the bridge erecting machine cannot use the normal construction method to erect the beam when the clearance at the bottom of the high-speed rail beam is small in the overpass project, and to provide an auxiliary structure with reasonable design and safe, reliable and reasonable operation steps. Avoid the insufficient height of the site, and be suitable for the construction method of the high-speed rail with low headroom and low headroom for the overpass to form a multi-angle acute-angle cross under the high-speed rail

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  • Method for intersection angle high-speed railway underpassing low-clearance girder erection

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Embodiment Construction

[0032] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0033] Such as figure 1 , figure 2 As shown, the present embodiment is a construction method for erecting girders with high-speed railways crossing at an acute angle and passing under the high-speed rail. Take the following specific site conditions as an example: a new expressway Jiangbei connection line project, the highway runs north-south, and crosses a river from south to north. , across the passenger-dedicated line railway, and across the electrified railway, the whole line is a viaduct structure with a total length of 1km, and the left and right sides of the bridge deck are separated. It is located between the existing highway across Pier 1 and the existing highway across Pier 4. Sheet 2 and right sheet 3 of the high-speed railway, the width of the whole bridge is 25m. The upper structure of t...

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Abstract

The invention relates to a method for intersection angle high-speed railway underpassing low-clearance girder erection, and solves the problems that in the interchange engineering, when the clearance to the bottom of the girder of the high-speed railway is small, a bridge girder erection machine cannot use the normal construction method to perform the girder erection. In the method, the bridge girder erection machine, carrying pole cross beams, girder transfer tracks, and a girder transfer trolley are effectively combined, the on-site owned conditions are completely utilized, so that the low clearance limit is avoided; and auxiliary facilities are arranged, so that beams are orderly fed in sections and steps. For the box girder erection at the crossings of the highway and railway, the bridge girder erection machine overhead crane is adopted on one end, a construction scheme of hanging chain blocks on the special carrying pole cross beams are adopted on the other end, so that the construction problem of low-clearance small box girder erection can be well solved.

Description

technical field [0001] The invention relates to the technical field of overpass bridge construction engineering, in particular to a construction method for erecting girders crossing at an acute angle and passing under high-speed railways with low headroom. Background technique [0002] In traffic engineering, high-speed railways and high-grade highways have the phenomenon of adopting bridge structure three-dimensional intersections. The superstructure design of high-grade highway bridges mostly adopts simple-supported and then continuous box girder structures. Car transported to the construction site, using the corresponding type of bridging frame construction technology. However, due to the limitation of site conditions during the design of the new bridge, the clearance between the bridge deck and the bottom of the high-speed rail beam is small, and the bridge erecting machine cannot use the normal construction technology to erect the beam. Existing beam erection methods a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/06
Inventor 茅欢明任文祥张维建陈辉赖建昌曹春林
Owner CHINA RAILWAY 24TH BUREAU GRP
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