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Bridge jacking method

A lifting and bridge technology, applied in the direction of bridges, bridge maintenance, bridge reinforcement, etc., can solve problems such as hidden safety hazards and synchronization failure, and achieve the effect of less interference and low cost

Inactive Publication Date: 2020-01-03
杭州交投科技工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When using the traditional jacking process, often due to the difference in load and the limitations of the equipment, it is impossible to fundamentally eliminate the additional stress caused by the asynchronous hydraulic jack on the jacking components, which will cause synchronization failure and pose a great safety hazard

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0035] Embodiment 1: as Figure 1-3 As shown, the jack is a 50-type jack with a height of 48mm and a maximum piston stroke of 15mm. A bridge jacking method includes the following steps:

[0036] Step 1. Set up the scaffolding operation platform. The scaffolding column is made of φ48mm wall thickness 2.7mm steel pipe, the surface is smooth and smooth, without rust, cracks, delamination, indentation, scratches and hard bends. Before setting up the shelf, it should be maintained, derusted and painted uniformly, and the color should strive for a beautiful environment. The specifications of the scaffolding fasteners match the steel pipes and are made of malleable cast iron. There must be no forging defects such as cracks, pores, shrinkage porosity, and sand holes. The bonding surface should be flat and the movable parts should be flexible. The scaffolding poles are arranged according to the longitudinal distance of 2m×the horizontal distance of 2m, and the step distance is 1.8m. A...

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PUM

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Abstract

The invention provides a bridge jacking method. The bridge jacking method comprises the steps of erecting a scaffold operation platform, determining the jacking height of each observation point, installing a displacement control system and an anti-roll device, performing hydraulic system inspection, control system inspection and monitoring system inspection, pressurizing jacks, slowly pressurizingall the jacks and repeating until the jacking height is reached, taking out an original bearing longitudinally along a bridge and along a beam, cleaning a placement position of the bearing and removing litter around the placement position, replacing the original bearing with a new bearing, and lowering the beam.

Description

technical field [0001] The invention belongs to the field of bridge maintenance, in particular to a bridge jacking method. Background technique [0002] In the current reconstruction of rivers, railways, highways and urban construction, the clearance of bridges and the alignment of existing bridges and new bridges are difficult issues in the reconstruction. The above problems lead to a series of difficult problems: ① Can the height of the bridge be changed to meet the design requirements without damaging the existing bridge structure? ② Can the existing bridge be transformed to meet the design requirements as quickly as possible under the premise of reducing the traffic interruption time as much as possible? ③ Can the construction time and cost be minimized to meet the needs of renovation? [0003] Solving the above problems is related to the bridge jacking technology. The bridge needs to be jacked up before the bridge is repaired, so that the bridge can be jacked up in pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 邱剑季刘毅钱涛潘煜何鸣詹莉涂集祺杜栋民
Owner 杭州交投科技工程有限公司
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