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Method for jacking construction of bridge

A construction method and jacking technology, which is applied to bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of low jacking construction efficiency and inconvenience, and achieve the goals of accelerating jacking construction efficiency, avoiding subsidence, and reducing pressure Effect

Active Publication Date: 2019-10-01
杭州交通工程监理咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, each time the lifting block is set on the piston rod of the jacking cylinder, the construction personnel need to climb to the top of the support frame to operate, so this process is relatively inconvenient, and thus the efficiency of jacking construction is also low

Method used

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  • Method for jacking construction of bridge
  • Method for jacking construction of bridge
  • Method for jacking construction of bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment one: if figure 1As shown, it is a bridge jacking construction jacking mechanism disclosed in the present invention, which includes a distribution beam 2 fixed on the lower end surface of the box girder 1 and a jacking mechanism arranged between the distribution beam 2 and the ground.

[0059] Such as figure 1 , 2 As shown, a distribution beam 2 is arranged on both sides of the bridge pier 24 , and the length direction of the distribution beam 2 corresponds to the width direction of the box girder 1 . The jacking mechanism includes a jacking cylinder 3 arranged on the lower end surface of the distribution beam 2 and a jacking column 4 arranged between the jacking cylinder 3 and the ground. The jacking cylinder 3 and the jacking column 4 are all along the distribution beam 2 There is one column for intervals in the length direction.

[0060] Wherein, the cylinder bottom end surface of the jacking oil cylinder 3 is fixedly connected with the lower end surface...

Embodiment 2

[0073] A bridge jacking construction method is characterized in that: comprising the following construction steps:

[0074] step one:

[0075] 1) Cut the box girder 1 above the bridge along the width direction of the bridge, so that the box girder 1 that needs to be lifted becomes independent;

[0076] 2) Set the partial pressure block 19 formed by concrete prefabrication on the ground;

[0077] Step 2: fixedly install the distribution beam 2 on the lower end surface of the box girder 1, and distribute the distribution beam 2 on both sides of the pier 24;

[0078] Step 3: Set jacking cylinder 3:

[0079] The jacking cylinder 3 is fixed on the lower end surface of the distribution beam 2, the bottom end of the cylinder body of the jacking cylinder 3 is fixed to the lower end surface of the distribution beam 2, and the jacking cylinders 3 are arranged in a row along the length direction of the distribution beam 2 at intervals;

[0080] Step 4: Set the jacking column 4 between...

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Abstract

The invention relates to a method for jacking construction of a bridge. The method for jacking construction of the bridge comprises the following construction steps that firstly, box girders in the upper portion of the bridge are cut; secondly, distributive girders are arranged on the lower end faces of the box girders; thirdly, jacking oil cylinders are arranged; fourthly, jacking columns are arranged between the jacking oil cylinders and the ground; fifthly, the jacking oil cylinders are driven, and then the distributive girders and the box girders are jacked; sixthly, after piston rods of the jacking oil cylinders extend to the maximum length, long jacking columns are started to be connected; seventhly, the jacking oil cylinders are driven, and then the distributive girders and the boxgirders are jacked to the target height; eighthly, after the box girders reach the target height, cushion blocks are arranged between the upper end faces of piers and the lower end faces of the box girders; and ninthly, the construction is completed, and the jacking columns, the jacking oil cylinders and the distributive girders are dismounted. The method for jacking construction of the bridge hasthe beneficial effects that constructors only need to connect the long jacking columns to the ground and do not need to climb up high, and thus the jacking construction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of bridge jacking, in particular to a bridge jacking construction method. Background technique [0002] The bridge includes a box girder and a pier support under the box girder for supporting the box girder, and the upper end surface of the box girder is set as a bridge deck. Bridge jacking is about jacking up the box girder so that the bridge deck rises. [0003] Existing bridge jacking construction methods generally include the following construction steps: [0004] Step 1: Cut the box girder above the bridge pier; [0005] Step 2: Set the distribution beam on the lower end face of the box girder [0006] Step 3: Set up a support frame on the ground; [0007] Step 4: Set a row of jacking cylinders on the upper end of the support frame; [0008] Step 5: Use the jacking cylinder to jack up the box girder; [0009] Step 6: Whenever the piston rod of the jacking cylinder is stretched to the longest, the ...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 王卓
Owner 杭州交通工程监理咨询有限公司