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Turnout beam replacement construction method

A construction method and technology of turnout beams, which are applied to bridges, bridge materials, bridge maintenance, etc., can solve the problems of large impact on normal traffic and long replacement time of turnout beams, and achieve short replacement operation time, shorten blockage time, reduce effect of influence

Active Publication Date: 2020-11-13
CHINA RAILWAY 24TH BUREAU GRP ZHEJIANG ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in many construction methods now, it takes a long time to replace the turnout beam, which has a great impact on normal traffic.

Method used

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  • Turnout beam replacement construction method
  • Turnout beam replacement construction method

Examples

Experimental program
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Effect test

Embodiment

[0025] Embodiment: A kind of turnout beam replacement construction method (see attached figure 1 to attach Figure 4 ), including the following steps: a. Site layout, respectively laying out turnout beam platform 2 and existing beam storage platform 3 on both sides of existing beam 1; turnout beam platform and existing beam storage platform are set on the combined support On the steel pipe pier, the composite support steel pipe pier adopts φ529×10mm steel pipe. Double I36b I-beams are installed at the top of the steel pipe columns, and I20b I-beam diagonal braces are arranged between the columns. There are channel steel distribution beams and 6mm steel plates on it. The steel plate goes along the cross bridge to the steel sleeper. The bottom formwork of the beam is laid directly on the steel sleeper. In order to reduce the settlement of the assembly site, the foundation reinforcement area at the platform of the turnout beam system adopts bored piles with a diameter of 1.0 ...

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Abstract

The invention discloses a turnout beam replacement construction method, and aims to overcome the defects of long turnout beam replacement time and great influence on normal driving. In the turnout beam replacement construction process, the steel box beam is assembled on the turnout beam manufacturing platform, an existing beam can normally run in the assembling process, and normal running of an existing line is not affected. After the steel box girder is assembled and the existing girder is jacked up, the existing girder is pulled by a traction jack while a new turnout girder is pushed by a pushing jack, and the operations of the existing girder and the new turnout girder are synchronously carried out, so that the existing line blocking time is favorably shortened. The existing beam movesto the existing beam storage platform under the traction of the traction jack, the turnout beam moves to the position above the bridge pier under the pushing effect of the pushing jack, and beam falling is conducted through the beam falling jack after adjustment is conducted in place, so that a new turnout beam is erected on the bridge pier, and replacement construction is completed. And then thenew turnout beam is connected with the original beam, so that the normal traveling crane can be prevented from being blocked, and the influence on the normal traveling crane is small.

Description

technical field [0001] The invention relates to a beam replacement technology, more specifically, it relates to a construction method for the replacement of a turnout beam. Background technique [0002] At present, in the construction of bridge erection, the project of replacing the turnout girder of the existing bridge is often encountered. During the construction process of this type of project, the existing beam on the bridge piers needs to be removed, and then a new turnout girder is erected between the bridge piers. During the actual construction process, normal traffic will still be on the bridge, so the replacement time should be shortened as much as possible to reduce the impact on normal traffic. However, in many construction methods now, it takes a long time to replace the turnout beams, which has a great impact on normal traffic. Contents of the invention [0003] The invention overcomes the shortcomings of long switch beam replacement time and great influence ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E01D21/06E01D2/04E01D101/30
CPCE01D22/00E01D21/06E01D2/04E01D2101/30
Inventor 余小勇计炎赖建昌刘涛潘伟安
Owner CHINA RAILWAY 24TH BUREAU GRP ZHEJIANG ENG CO LTD
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