光纤传感技术在长江二桥加固监测中的应用

Application of Optical Fiber Sensing Technology in Strengthening Monitoring of Wuhan Second Yangtze River Bridge

利用光纤光栅传感技术监测武汉长江二桥连续梁桥及连续刚构桥维修加固施工过程中桥梁结构变化情况。通过监测截面应力、体外预应力钢束张拉力、裂纹变化研究加固维修效果,验证了维修加固设计理论。构建桥梁实时、多参量、远程的加固维修监测系统。并为桥梁长期健康监测提供评估基准状态。

In the process of strengthening and maintenance of the continuous beam bridges and the continuous rigid frame bridges which are the part of Wuhan Second Yangtze River Bridge.The various optic fiber sensors had been used to monitor the variety of the bridge structure.External pre stressed tendon,cracks change and intensity of cross sections had been monitored to research the effect of strengthening and maintenance,verify the design theories of strengthening and maintenance.Constructed the bridge monitoring s...