A construction method for jacking the box under the hump line

A construction method and jacking technology, which is applied to artificial islands, water conservancy projects, underwater structures, etc., can solve the problems of not being allowed to be closed for a long time and cannot be completed, and achieve the effect of low construction cost, good effect and reasonable design

Active Publication Date: 2018-10-12
CHINA RAILWAY SIXTH GRP TIANJIN RAILWAY CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since there are retaining walls on both sides of the hump line, and the hump line is not allowed to be closed for a long time, if the jacking of the box is completed within a short closing time, the stone retaining wall at the jacking place must be removed. After stacking, the existing jacking construction method cannot complete this kind of project

Method used

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  • A construction method for jacking the box under the hump line
  • A construction method for jacking the box under the hump line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the construction method for jacking the cabinet under the hump line provided in this embodiment includes the following steps in order:

[0028] 1) First, adopt the traditional line reinforcement system consisting of 3-5-3 suspension rails and I-beam longitudinal beams to reinforce the existing railway line 1 in the area affected by jacking on the hump line, and remove the rubble in this area retaining wall;

[0029] 2) Prefabricate a multi-section reinforced concrete box 2 in the foundation pit located on the side of the above-mentioned existing railway line 1. During the prefabrication process, the position corresponding to the retaining wall on the top plate of the box 2 is reserved for connecting the prefabricated block of the retaining wall steel bars;

[0030] 3) At the same time, the prefabricated block of the reinforced concrete structure of the retaining wall is prefabricated outside the site. The width of the prefabricated block of ...

Embodiment 2

[0035] Such as figure 1 As shown, the construction method for jacking the cabinet under the hump line provided in this embodiment includes the following steps in order:

[0036] 1) First, adopt the traditional line reinforcement system consisting of 3-5-3 suspension rails and I-beam longitudinal beams to reinforce the existing railway line 1 in the area affected by jacking on the hump line, and remove the rubble in this area retaining wall;

[0037] 2) Prefabricate a multi-section reinforced concrete structure box 2 in the foundation pit on one side of the existing railway line 1 above, and reserve steel bars at the position corresponding to the retaining wall on the top plate of the box body 2 during the prefabrication process;

[0038] 3) After the concrete in the box body 2 reaches the predetermined strength requirement, a reinforcement cage for the prefabricated hump retaining wall 4 is made at the above-mentioned reserved reinforcement, and a formwork for the prefabricat...

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Abstract

The invention discloses a construction method of jacking a box body under a hump line. The construction method comprises the following steps of prefabricating a retaining wall on the top surface of the box body, then jacking the box body according to the traditional method, then connecting the prefabricated retaining wall and an original rubble retaining wall into a whole, and conducting the construction; or prefabricating retaining wall precast blocks, and then jacking the box body according to the traditional method, then connecting the retaining wall precast blocks with the pre-buried steel bars on the top surface of the box body, and finally connecting the two ends of the retaining wall precast blocks with the original rubble retaining wall into a whole and conducting the construction. According to the construction method of jacking the box body under the hump line, time needed for the construction is short, thus the impact on the operation of the railway is reduced to the minimum; and the prefabricated retaining wall can be connected with the original rubble retaining wall into a whole quickly, so that the phenomenon that the retaining wall expands outwards due to vehicle slipping is ensured not to happen. In addition, the construction method is reasonable in design, low in construction cost and good in effect.

Description

technical field [0001] The invention belongs to the technical field of railway facility construction, in particular to a construction method for jacking a box under a hump line. Background technique [0002] With the rapid development of urban construction, more and more urban roads need to pass under the existing railway lines. The commonly used method is the jacking method. This method is to first reinforce the existing railway line in the area affected by the jacking, and then use jacks as jacking equipment to lift the multi-section reinforced concrete box that constitutes the frame bridge from the foundation pit on one side of the existing railway line. While digging in the middle, it is jacked to the preset position under the existing railway line. When the frame bridge to be installed happens to be located in the throat area of ​​the marshalling yard of the railway hub and a hump line needs to be passed under it, since there are many railway strands and turnouts there...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E02D29/00
CPCE01D21/00E02D29/00
Inventor 刘春旺郝振平安旭张鹏苏献东李新广孙晶秦家玉杨红霞李宗璞王灿董媛媛
Owner CHINA RAILWAY SIXTH GRP TIANJIN RAILWAY CONSTR
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