Method for improving monitoring accuracy of structural settlement

A technology of settlement monitoring and settlement height, applied in the direction of hydrostatic pressure, etc., can solve the problems of low measurement accuracy, cumbersome offset calibration, etc., and achieve the effects of high-precision monitoring, improved accuracy, and stable work

Active Publication Date: 2013-02-13
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

This method has the following disadvantages: the range of the liquid pressure sensor must cover the pressure conversion range of all monitoring points, a pressure sensor with a large range must be selected, the measurement accuracy is relatively low, and cumbersome offset calibration is required for each measurement result

Method used

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  • Method for improving monitoring accuracy of structural settlement
  • Method for improving monitoring accuracy of structural settlement
  • Method for improving monitoring accuracy of structural settlement

Examples

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Embodiment Construction

[0028] The device used in the method of improving the accuracy of structure settlement monitoring, including a liquid communication pipe, a measuring liquid, a liquid level retainer, a liquid pressure sensor, a hydraulic balance pipe,

[0029] The monitored structure selects several monitoring positions as monitoring points, and each monitoring point fixes a liquid pressure sensor and a hydraulic balance pipe. As the monitored structure settles together, the second interface of the liquid pressure sensor of all monitoring points passes through the liquid connecting pipe It is connected to the bottom of the liquid level retainer, and the first port is connected to the bottom of the respective hydraulic balance pipes of the monitoring points through a liquid communication pipe.

[0030] The liquid pressure sensor includes a sensing sheet, a first interface and a second interface, and the sensing sheet of the liquid pressure sensor separates the measuring liquid passed through the...

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Abstract

The invention provides a method for improving monitoring accuracy of structural settlement and belongs to the fields of structural health monitoring and sensor application. The method for improving the monitoring accuracy of the structural settlement is characterized in that a fixed liquid level retainer which does not subside along with the structural settlement is adopted to serve as a reference liquid level, simultaneously a hydraulic balancing pipe is added at one end of a liquid pressure sensor to offset initial pressure-intensity deviation of the liquid pressure sensor, the measuring range of the e liquid pressure sensor is decreased, the measuring sensitivity of the liquid pressure sensor is improved, and the monitoring accuracy of the structural settlement is improved. In addition, calibration procedures in the measurement process are simplified, and the method only needs primary static initialized calibration and overcomes the defects including low accuracy and complicated calibration procedures in traditional structural settlement monitoring.

Description

technical field [0001] The invention relates to a high-precision monitoring method applied to structure settlement monitoring, belonging to the field of structural health monitoring and sensor application. Background technique [0002] Structures such as bridges, houses, roads, ground, ship hulls, and aircraft fuselages will undergo certain settlement deformations when they are subjected to loads and external forces. By accurately measuring the settlement of various parts of the structure, the health status and safety performance of the structure can be monitored. [0003] The existing structural settlement measurement method generally uses a liquid connecting pipe to connect the liquid pressure sensors at various monitoring points. One end of the liquid connecting pipe is connected to a liquid level holder, and the pressure value between the sensor and the liquid level is calculated by measuring the pressure value of the liquid pressure sensor. The height difference of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/04
Inventor 李让坤王鹏军刘伟罗洪徐淑正杨华中
Owner TSINGHUA UNIV
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