PVDF传感器实现斜拉桥桥索张力在线监测  

PVDF Sensors Used for on Line Measurement of Stayed Cable Tension of Cable-stayed Bridges

作　　者：刘建胜[1] 汪同庆[1] 王贵新[2] 居琰[1] 王代华[1] 

机构地区：[1]重庆大学光电工程学院,重庆400044 [2]后勤工程学院,重庆400042

出　　处：《仪表技术与传感器》2002年第12期3-4,12,共3页Instrument Technique and Sensor

基　　金：国家自然科学基金委资助项目 (5960 80 0 7)

摘　　要：斜拉索是斜拉桥的主要承载部件。斜拉桥桥跨结构的重量和桥上活载绝大部分或全部通过斜拉索传递到索塔上。实时监测分布于大桥上的桥索张力变化 ,对于了解斜拉桥的健康状态 ,确保斜拉桥的安全是至关重要的。采用聚偏二氟乙烯 (PolyvinylideneFluoride)通过监测应变得到拉索的振动信号 ,计算出拉索的张力 ,实现斜拉索张力的在线测量。The stayed cable of cable-stayed bridges is the main load-bearing components.Most of the load is transfer to the tower of the bridge.Through monitoring the cable tension and its variation,the overall technical condition to a cable-stayed bridge can be estimated and assure the safety of the bridge.Polyvinylidene fluoride is applied as sensor to monitoring the vibration of stayed cables,and the tension of stayed-cable can be calculated to realized the on line measurement of cable-stayed bridges.

关 键 词：传感器 聚偏二氟乙烯 斜拉桥 桥索张力 在线监测 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] TP21[交通运输工程—道路与铁道工程]