Underneath pass existing railway bridge and culvert jacking horizontal guiding and deviation correcting system

An existing line and jacking technology, applied to bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of long time-consuming static correction and damage to the bridge body, avoid manual measurement and calculation, improve observation accuracy, and avoid artificial lighting. quasi-error effect

Active Publication Date: 2015-09-02
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the displacement exceeds the limit, it is necessary to stop applying force immediately and correct the deviation in time, but static deviation correction takes a long time and causes great harm to the bridge body
[0006] At present, the existing technology still cannot effectively solve the above problems

Method used

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  • Underneath pass existing railway bridge and culvert jacking horizontal guiding and deviation correcting system
  • Underneath pass existing railway bridge and culvert jacking horizontal guiding and deviation correcting system
  • Underneath pass existing railway bridge and culvert jacking horizontal guiding and deviation correcting system

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Embodiment Construction

[0027] A horizontal guiding deviation correction system proposed by the present invention for underpassing existing line bridges and culverts will be described in further detail below in conjunction with the accompanying drawings. It should be noted that the drawings are all in very simplified form and inexact proportions, and are only used to facilitate and clearly illustrate the purpose of the present invention.

[0028] Such as figure 1 As shown, the present invention proposes a horizontal guiding and correcting system for jacking up bridges and culverts passing through existing lines. Push system 5 and main control computer 6.

[0029] In the present invention, the backsight point is set at 10 m behind the jacking, and the backsight prism 1 is installed, and the backsight point is at a certain distance from the back so as not to affect the observation result due to the deformation of the back. A laser target unit 2 is respectively installed in the middle of both side wal...

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Abstract

The invention provides an underneath pass existing railway bridge and culvert jacking horizontal guiding and deviation correcting system which comprises a rearview prism, a laser target unit, a laser total station, a synchronous controller, a hydraulic jacking system and a main control computer. The initial posture and a theoretical design axis of a jacking bridge and culvert are determined through rearview orientation; the laser total station conducts tracking measurement on a target prism; the main control computer analyzes collected data and determines the real-time posture of the jacking bridge and culvert. When the horizontal deviation of the jacking bridge and culvert reaches an early warning value, the main control computer sends out a command, and deviation is corrected by adjusting the hydraulic jacking system. The underneath pass existing railway bridge and culvert jacking horizontal guiding and deviation correcting system is a laser guide and deviation correcting system and comprehensively utilizes the surveying and mapping technology, the laser sensing technology, the computer technology and the mechanical-electronic technology to guide jacking construction of the bridge and culvert, an advanced technological tool and an operation means are provided for mechanical construction of jacking of the bridge and culvert, the traditional operation mode is greatly changed, and favorable conditions are created for modern, automatic and digital development of measurement.

Description

technical field [0001] The invention relates to the technical field of jacking construction of bridges and culverts passing under existing lines, in particular to a horizontal guiding deviation correction system for jacking bridges and culverts passing under existing lines. Background technique [0002] Existing line jacking bridges and culverts are bridges and culverts constructed by the jacking method across the existing lines, mostly using reinforced concrete box frame structures, also called frame bridges and culverts. The specific construction process of the jacking method construction is: excavate a working pit on one side of the existing railway line, cast in-situ slides, pour reinforced concrete bridge body on the slides, build the back, reinforce the line at the same time, and install jacking equipment ;When the jacking front completes a jacking stroke, start the high-pressure oil pump to make the jacking pick produce a jacking force, and push the bridge body forwar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 王浩杨敏罗勇王飞球
Owner SOUTHEAST UNIV
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