振弦式土压力传感器温度敏感性试验研究  

Research on Temperature Sensitivity in Vibrating Wire Sensor to Earth Pressure

作　　者：刘晓曦 王旭 刘一通 

机构地区：[1]空军工程设计研究局,北京100068

出　　处：《仪表技术与传感器》2009年第1期6-8,共3页Instrument Technique and Sensor

基　　金：军队科研基金资助项目(KJY0422)

摘　　要：为了研究振弦式土压力传感器在实际使用过程中温度变化对传感器输出频率偏差的影响,在分析土体和地下结构物表面传感器受力的基础上,对传感器的温度敏感性进行室内和现场试验。由试验结果可知:环境温度改变引起的观测土压力偏差可达8.15%,在荷载作用下,该偏差可达15.5%。在此基础上对现场试验数据进行了校正,得到了较好的观测结果。In order to analyze the influence of temperature change to the output of vibrating wire sensor during practice, the loading acted on vibrating wire sensor used in soil or underground structure surface were discussed in detail, and the temperature sensitivity of vibrating wire sensors were tested in laboratory and field. Test result shows that the observation deviation of soil pressure by temperature change were close to 8.15%, and the deviation were up to 15.5% when the pressure applied on the vibrating wire sensor, hence the calibration on the data from the field tests were given, and better observation results were gotten.

关 键 词：振弦式传感器 土压力 温度 敏感性 

分 类 号：U441[建筑科学—桥梁与隧道工程]