分布式光纤传感器监测裂缝理论优化与研究  

Optimization and research on distributed optical fiber sensor monitoring crack

作　　者：叶宇霄 赵新铭[1] 李俊[1] 吴刚[2] 谢雪峰[2] 姚剑[2] YE Yuxiao;ZHAO Xinming;LI Jun;WU Gang;XIE Xuefeng;YAO Jian(Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;Jiangsu Provincial Taizhou Water Bureau, Taizhou 225300, China)

机构地区：[1]南京航空航天大学土木工程系,江苏南京210016 [2]江苏省泰州市水利局,江苏泰州225300

出　　处：《水利信息化》2017年第5期63-68,共6页Water Resources Informatization

基　　金：江苏省水利科技项目(JS-20140898-001)

摘　　要：分布式光纤传感器具有分布式无损检测的特点,且精度较高,特别适合监测混凝土的裂缝。目前,国内已经有研究人员使用分布式光纤监测裂缝的尝试,但结果并不理想,为此进行优化研究。首先,研究光纤监测裂缝的机理,分析使用分布式光纤监测裂缝时的影响因素,并针对这些因素提出解决方案;然后,通过模型、算法及布置方式的优化提高监测精度;最后,通过对钢筋混凝土梁的试验数据优化分析,验证研究结果的准确性。结果证明,光纤经过优化后监测数据更准确合理。Distributed optical fiber sensor has the characteristics of distributed nondestructive testing and high precision,especially is suitable for monitoring concrete cracks.At present,domestic researchers have been using distributed optical fiber to monitor the cracks,but the results are not satisfactory,for this purpose,optimization research is carried out.In this paper,the mechanism of optical fiber monitoring crack is studied,and the influencing factors are analyzed.Then,the monitoring accuracy is improved through the optimization of model,algorithm and layout.Finally,the experimental results of reinforced concrete beams are analyzed to verify the accuracy of the results.The results show that the optimized monitoring data is more accurate and reasonable.

关 键 词：分布式光纤传感器 裂缝宽度 算法优化 模型优化 布置优化 

分 类 号：TV698[水利工程—水利水电工程]