Stay cable force measuring device and measuring method therefor

A measuring device and cable technology, applied in the direction of tension measurement, etc., can solve the problems of poor versatility and practicability, difficulty in determining the best working point, measurement error, etc., and achieve the effect of simple structure
CN106500900AInactive Publication Date: 2017-03-15CHONGQING JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHONGQING JIAOTONG UNIVERSITY
Publication Date
2017-03-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a stay cable force measuring device and a measuring method therefor. The device is simple in structure, and no expensive high precision equipment such as sensors is needed; a corresponding relation between cable force of a stay cable and radial elastic stress is adopted by the device, a contact type displacement sensor with guaranteed measurement accuracy is adopted for measuring variation of radial deformation and displacement before and after specified radial pressure is applied on the stay cable, and the cable force of the stay cable is measured via a pre-established function relation model between the cable force and deformation under stress; whether the stay cable is in installation processes or is put into use after installation, the cable force of the stay cable can be measured; based on a measurement principle adopted by the device, measurement precision can be prevented from being affected by interference factors such as span, sag, vibration, environment electromagnetic waves and the like of the stay cable; high measurement precision can be guaranteed, universality can be well ensured, convenience of use and operation is realized, and a new solution is provided for measurement of the cable force of the stay cable which is put into use after installation.
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Description

technical field

[0001] The invention relates to the technical field of cable stress and safety monitoring, in particular to a cable force measuring device and a measuring method thereof. Background technique

[0002] Cable force measurement plays an important role in modern building safety inspection and monitoring. At present, four methods are generally used for cable force measurement at home and abroad: (1) pressure gauge measurement; (2) pressure sensor measurement; (3) frequency measurement method; (4) magnetoelastic effect method.

[0003] The pressure gauge method is simple and easy to implement. It is a practical method to control the cable force during construction. It can be used to adjust the cable force during the construction of cable-stayed bridges. However, due to some characteristics of the pressure gauge itself, the pointer is easy to deviate. Due to the disadvantages of severe jitter, large reading errors, and the need to convert load indication values, it...

Claims

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