【摘 要】
：
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
【出 处】
：
2012 Postdoctoral Symposium of China on Materials Science &
论文部分内容阅读
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.The newly developed anchor cable dynamometric system has achieved international leading level at aspects of accuracy, wide range, partial load, stability, reliability and environmental suitability that it can offer technical support for real-time monitoring of stress condition of pre-stressed anchor cable.
其他文献
Cathode is the most important composition for lithium ion battery.The olivine structure lithium iron phosphate (LiFePO4) with its numerous appealing features such as high theoretical capacity, accepta
Novel isotropic and anisotropic SEEPS based thermoplastic magnetorheological elastomers (MRE) composites possessing good elasticity and high magnetorheological effect were prepared by melting blending
A simulation analyses of the copper alloys synchronizer ring precision forging by using 3D rigid-plastic finite element method is presented.A simulation analyses is studied to investigate the laws and
The microstructure and electrical properties of ZnO varistor ceramics with different ZrO2 content prepared by a solid reaction route and sintered at 1100℃ were investigated.The microstructures of the
Quasi-static and dynamic impact tests of hat shaped specimen with three different widths of shear zone (800μm, 400μm, 50μm) were performed by electronic universal testing machine and Split Hopkinson P
Metal-plastic sandwich sheet consists of two layers of metallic sheet as skin and a polymeric material as core.Three layers are glued together.The interface stress between skin sheet and core layer ha
Electric arc furnace (EAF) slag is the byproduct of electric arc furnace in the process of metallurgy.In the paper, different from simply recovering iron process, a recovering iron process combined wi
With a view to successfully forming multi-sheet cylinder sandwich structure of Inconel718 superalloy, high temperature plasticity of the laser butt welding plate for Inconel718 superalloy with ultra-f
This study presents a novel process combining hot filament chemical vapor deposition (HFCVD) method and polishing technique to fabricate micro/nano-crystalline multilayered ultra-smooth diamond (USCD)
Four kinds of ZrC coatings with nearly the same thickness have been successfully prepared on graphite substrate by chemical vapor deposition (CVD) through controlling the ratio of inlet reacting gases