磁弹索力传感器在混凝土系杆拱桥健康监测系统中的应用

Application of Elastomagnetic Cable Tension Sensor in Structural Health Monitoring System for Concrete Tied Arch Bridge

磁弹索力传感器基于铁磁材料的磁弹性效应,通过测量钢缆索中由于应力变化导致的磁导率变化,进而获取应力。作为一种无损、非接触性的测量方法,可广泛适用于吊杆、系梁、斜拉索及预应力筋的应力测定。讨论了桥梁健康监测系统的构建方法,各种常用应力测量技术及特点。结合对钱江四桥钢管混凝土系杆拱桥的结构分析,介绍了磁弹索力传感器在钱江四桥在线健康监测系统中的具体应用。

This paper discusses the construction method of the bridge health monitoring system and the characteristics of a variety of commonly used stress measurement techniques.Combined with the structure analysis for the 4th Qianjiang River concrete filled steel tubular arch bridge,the applications of elastomagnetic sensor in inline structural health monitoring system is presented.