Research and development on high performance anchor cable dynamometric system based on vibrating-wire sensor technology
Outstanding anchor cable dynamometric system is urgently needed in anchor engineering of pre-stressed anchor cable so as to control tension during the process of anchor cable construction and monitor long-term variation of anchoring force.A breakthrough research has been made on the development of high performance anchor cable dynamometric system based on vibrating-wire sensor technology through theoretical research,laboratory study and field engineering experiment research.Here are the research results:(1) The newly-built mathematical model can improve the accuracy of vibrating-wire sensor and make error compensation for temperature.(2) The matching technique of wire and operating diaphragm is adopted so that hysteresis is decreased and accuracy of process was improved.(3) The low excitation circuit technology has been put into use that the inconsistency of frequency was solved and the resolution of measuring instruments was enhanced.(4) The techniques of piston-conveying pressure and force conversion technology has been used to solve the vibrating-wire sensor problems of wide range,partial load effect,accuracy and long-term stability,which can be used to develop vibrating-wire sensors characterized with wide range,high-accuracy,high resolution and long-term stability.(5) Supporting detecting equipments,can directly display the physical quantity without additional errors but more accuracy.
Vibrating-wire sensor technology anchor cable dynamometric system mathematical model excitation circuit piston-conveying pressure force conversion technology
Wang Qingbiao Jiang Jinquan Chu Mingxiang
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechan Department of resource and civil engineering, Shandong University of Science and Technology, Taian,
国际会议
上海
英文
250-250
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）