摘要
为得到拱桥拱肋在不同受力情况下的应变分布规律,通过建立有限元模型和采用基于光频域反射(OFDR)的分布式光纤传感技术2种方法研究了不同荷载情况下的拱肋应变分布。结果表明:在拱肋表面粘贴的基于OFDR的分布式光纤传感器不仅能准确地反映不同荷载情况下拱肋的应变分布规律,还可以得到拱肋在吊杆损伤前后的应变分布变化,且能定位吊杆损伤位置。
In order to obtain the strain distribution law of arch rib of arch bridge under different stress conditions, the arch rib strain distribution under different loads is studied by establishing the finite element model and using the distributed optical fiber sensing technology based on optical frequency domain reflection(OFDR). The results show that the distributed optical fiber sensor based on OFDR pasted on the surface of the arch rib can not only accurately reflect the strain distribution law of the arch rib under different load conditions, but also obtain the strain distribution changes of the arch rib before and after the damage of the suspender, and locate the damage location of the suspender.
作者
绪向首
王大鹏
XU Xiangshou;WANG Dapeng(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou Jiangsu 215011,China)
出处
《光通信技术》
2021年第9期20-23,共4页
Optical Communication Technology
基金
国家自然科学基金(51308369)资助。
关键词
光频域反射
分布式光纤传感器
拱肋
应变监测
损伤定位
optical frequency domain reflection
distributed optical fiber sensor
arch rib
strain monitoring
damage location
