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Device and method for measuring displacement of support axial force servo system

A displacement measurement and servo system technology, applied in the measurement device, the use of optical devices, the measurement distance and other directions, can solve the problem of large displacement error of the foundation pit enclosure, achieve the effect of the real overall change trend and avoid measurement errors

Inactive Publication Date: 2017-05-31
SHANGHAI ROAD & BRIDGE (GRP) CO LTD +1
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Problems solved by technology

[0003] The purpose of the present invention is to propose a new displacement measuring device and method for supporting the axial force servo system, which mainly solves the technical problem that there is a large error in the current method of using the jack stroke to obtain the displacement of the foundation pit enclosure structure

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  • Device and method for measuring displacement of support axial force servo system

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Embodiment Construction

[0009] In order to make the purpose of the present invention and working principle express more clearly, below in conjunction with figure 1 The specific implementation of the present invention is discussed in detail with examples.

[0010] A displacement measurement device for supporting an axial force servo system, including a laser extensometer 1 (manufactured by Shanghai Tonghe, model TH-L50) and a reflector 2, the laser extensometer 1 and reflector 2 are respectively installed on The laser extensometer 1 is connected to the control station 9 through the cable 8 on the enclosure structure of the foundation pit under the two ends of the steel support 7 . During the excavation process of the foundation pit, the foundation pit enclosure structure 3 at the servo end and the foundation pit enclosure structure 4 at the non-servo end generate a horizontal displacement to the inside of the foundation pit, and the built-in controller of the control station 9 (the manufacturer is Sie...

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Abstract

The invention provides a device and a method for measuring the displacement of a support axial force servo system, mainly aiming at solving the technical problem that the method for obtaining the displacement of a foundation pit bracing structure by using jack stroke quantity is larger in error. In order to solve the technical problem, the device for measuring the displacement of the support axial force servo system is characterized by comprising a laser convergence meter and a reflecting mirror, wherein the laser convergence meter and the reflecting mirror are respectively installed on foundation pit bracing structures under the two ends of a steel support; the distances between the two ends of side walls of a foundation pit are measured by using a laser sensor to emit laser to the reflecting mirror. Compared with the traditional displacement measuring method, the method provided by the invention avoids the measurement error caused by the deformation of the steel support. The device and the method are mainly used for measuring the displacement of the foundation pit bracing structure.

Description

technical field [0001] The invention relates to the technical field of deformation measurement when steel supports support foundation pit enclosure structures, in particular to a foundation pit side wall displacement measurement device and method using a laser sensor. It is mainly used for bilateral convergence measurement of foundation pit enclosure structure. Background technique [0002] The supporting axial force servo system is used to control the deformation of the foundation pit enclosure structure, and the displacement of the foundation pit enclosure structure is limited by compensating the axial force of the steel support. The supporting axial force servo system is generally equipped with a displacement and deformation measuring device, and the measured deformation is used to guide the adjustment of the axial force of the servo system. The existing technology is to install a deformation measurement device on the jack at the end of the steel support. By measuring th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16G01S17/48
CPCG01B11/16G01S17/48
Inventor 陶利韦坤王琰韩建勇王彦杰陈辉刘飞吴少谦任天晔倪文全姚鸿梁宋爽王琛
Owner SHANGHAI ROAD & BRIDGE (GRP) CO LTD
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