A Construction Method for Existing Line Jacking Protection

A construction method and existing line technology, applied in the field of existing line jacking bridge and culvert construction, can solve the problems of large construction difficulty and construction risk, project scale, construction difficulty and high construction risk, etc., so as to reduce construction risk, solve construction problems, reduce The effect of construction difficulty

Active Publication Date: 2018-03-13
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when this technology originated, it was suitable for bridges and culverts with relatively small spans and apertures. However, under modern traffic, the road width is getting wider and wider, and the apertures of frame culverts 23 are getting bigger and bigger. Continuing to use the existing technology will reduce the scale of the project. , construction difficulty and construction risk are increasing
Especially in the case of a large amount of temporary construction work and complicated procedures, it will bring greater construction difficulty and construction risk

Method used

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  • A Construction Method for Existing Line Jacking Protection
  • A Construction Method for Existing Line Jacking Protection
  • A Construction Method for Existing Line Jacking Protection

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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Such as Figure 5-12 As shown, a kind of existing line jacking protection construction method of this embodiment comprises the following steps:

[0041] 1) According to the structural size of the bridge and culvert, select a site outside the safe distance of the line to prefabricate the side wall 1 and the vault 2 respectively;

[0042] 2) Steel plate welding is used to form a side wall blade foot device 3 and a vault blade foot device 4, and the side wall blade foot device 3 and the vault roof blade foot device 4 are respectively installed at the front ends of the side wall 1 and the vault 2;

[0043]3) Select the jacking sequence of the side wall 1 and vault 2 according to the actual situation, which can be divided into two situations:

[0044] When jacking the side wall 1 first, and then the vault 2, the specific method is...

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Abstract

The invention discloses an existing line jacking protection construction method, which comprises the following steps: 1) according to the structure size of a bridge and culvert, respectively prefabricating a side wall and a vault; 2) respectively installing a side wall blade foot device and a vault blade foot device on the front end of the side wall and the front end of the vault; 3) adopting a pushing construction method, respectively carrying out a jacking operation on the side wall and the vault; 4) after the jacking operation is finished, respectively disassembling the side wall blade foot device and the vault blade foot device to finish the existing line jacking protection construction. The existing line jacking protection construction method has the characteristics that the pushing construction method is adopted to divide an existing jacking frame into the side wall and the vault to independently carry out the jacking operation, so that an engineering scale can be lowered, construction difficulty can be lowered, and construction risks can be lowered.

Description

technical field [0001] The invention relates to the technical field of existing line jacking bridge and culvert construction, in particular to a construction method for existing line jacking protection. Background technique [0002] At present, existing railway jacking frame construction methods (such as Figure 1~4 Shown) are all under the premise of solid foundation, push the prefabricated frame culvert 23 into place, and under the condition of not stopping the train, the frame culvert 23 is pushed into the existing railway line 22 with a high-power jack group. However, when this technology originated, it was suitable for bridges and culverts with relatively small spans and apertures. However, under modern traffic, the road width is getting wider and wider, and the apertures of frame culverts 23 are getting bigger and bigger. Continuing to use the existing technology will reduce the scale of the project. , construction difficulty and construction risk are getting bigger an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 饶少臣徐勇曾敏文望青薛照钧史娣任征
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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