光纤法珀传感器及其在桥梁应变监测中的应用  

Fiber Fabry-Perot Sensor and Its Application for Monitoring Bridge Strain

作　　者：熊先才[1] 朱永[2] 符欲梅[2] 章鹏[2] 陈伟民[2] 张永兴[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆大学光电工程学院,重庆400030

出　　处：《重庆建筑大学学报》2007年第3期48-50,60,共4页Journal of Chongqing Jianzhu University

基　　金：国家自然科学基金重点项目(50135030);交通部西部交通科技攻关项目(200131800073);中国博士后科学基金项目(20060390676)资助

摘　　要：应变是反映桥梁健康状况的重要参数,将光纤法珀传感器埋入混凝土结构内部,作为桥梁应变的智能传感元件,它与光开关、光纤应变解调仪、计算机等组成应变测量系统,可以实现桥梁应变自动监测。目前,该系统已经安装在重庆大佛寺长江大桥上,监测数据表明光纤法珀传感器的稳定性和可靠性好,能够用于大桥应变的长期监测。The strain is an important parameter that reflects the bridge health status, the fiber Fabry-Perot sensor is embedded in the concrete structure as the intelligent sensing element for the bridge strain. The strain measuring system is made up of the fiber Fabry-Perot sensor,light switch,fiber strain gauge and the comput- er; it can be used to monitor automatically the bridge strain. At present,the system has been installed in the Dafosi Bridge over the Yangtze River in Chongqing. The monitoring data show that the fiber Fabry-Perot sensor has good stability and reliability; it can be used to monitor the bridge strain for a long time.

关 键 词：光纤法珀传感器 应变测量 桥梁结构 健康监测 

分 类 号：U446.2[建筑科学—桥梁与隧道工程]