Internal force monitoring and automatic measurement system of pre-stress anchor cable

A prestressed anchor cable and automatic measurement technology, which is applied in the direction of tension measurement and the measurement of the change force of the magnetic property of the material caused by the applied stress, can solve the problems of complicated installation and inconvenience, and achieve low maintenance cost and long service life The effect of long length and high measurement accuracy

Inactive Publication Date: 2016-04-27
SHANGHAI STRONG FOUND ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the prestress monitoring system in the prior art is usually complicated to install and needs to be connected in series with the steel strand to measure the force, which is very inconvenient

Method used

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  • Internal force monitoring and automatic measurement system of pre-stress anchor cable
  • Internal force monitoring and automatic measurement system of pre-stress anchor cable
  • Internal force monitoring and automatic measurement system of pre-stress anchor cable

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Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0021] see figure 1 , the monitoring and automatic measurement system of the internal force of the prestressed anchor cable, including a magnetic flux sensor 1 for measuring the prestress on the steel strand, the magnetic flux sensor 1 is connected to a magnetoelastic instrument 2 for collecting the data of the magnetic flux sensor, the The magnetoelastic instrument 2 is connected with a monitoring display terminal 3 . The monitoring display terminal 3 is a remote computer system, which can be connected via the remote Internet or wireless network.

[0022] The magnetoelasticity instrument 2 is an electromagnetic signal conversion device, and the excitation and monitoring of the magnetic flux sensor 1 are completed through the magnetoelasticity ...

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Abstract

The invention provides an interval force monitoring and automatic measurement system of a pre-stress anchor cable, which includes a magnetic flux sensor arranged on a steel strand and used for measuring pre-stress. The sensor is connected to a magnetoelastic instrument which collects magnetic flux sensor data. The magnetoelastic instrument is connected to a monitoring display terminal. The magnetic flux sensor in the system measures the pre-stress in a non-contact manner, and does not damage the steel strand. The surface treatment on a measured member is not needed, and an original anticorrosion protective layer of the member is not destroyed. The maintenance cost of the sensor is low and the service life is long. The anti-interference capability is strong, the measurement precision is high, and the repeatability is good. The system can automatically measure the internal force and automatically compensate the temperature. A remote computer can directly display the force value. The all-weather monitoring of the ground pit safety is realized through the automatic data processing, analysis and early warning.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an internal force monitoring and measuring system of a prestressed anchor cable. Background technique [0002] Prestressed structures have been widely used in various fields of civil engineering because of their superior performance. The tension and anchorage of prestressed steel strands is a key process in the construction of prestressed structures. How to accurately monitor the tension and anchorage process of prestressed strands, measure the prestress size and prestress loss and adjust the tension value in time, It is the key to the effectiveness and scientificity of prestressed tension construction. [0003] In addition, to ensure the prestressing effect during construction, long-term prestress loss in the prestressing tendons needs to be monitored and measured. However, the prestress monitoring system in the prior art is usually complicated to install, and needs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/12G01L5/04
CPCG01L1/12G01L5/04
Inventor 刘全林刘文君刘斐然
Owner SHANGHAI STRONG FOUND ENG
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