节点文献
长距离光纤传感技术在地铁隧道监测中的应用
Application of Long Distance Fiber Sensing Technique in Metro Tunnel Monitoring
【摘要】 分析了地铁隧道结构的变形特点,提出了BOTDR长距离光纤传感技术应用到地铁隧道结构健康监测方案中,具有全程、实时、抗干扰、耐久等优点。采用钢管外包混凝土模型模拟隧道结构,检验了长距离光纤传感系统的应变检测性能。
【Abstract】 Structural and deformation feature of metro tunnel is discussed in this paper. Then long distance fiber sensing technique, based on BOTDR, is proposed to metro tunnel health monitoring. Flexural deformation of steel pipe with concrete cover is used to model metro tunnel deformation to test the ability of strain detection. As a result, the long distance fiber sensing technique shows many advantages, such as full range, in time, interference-free, duration.
【关键词】 地铁隧道;
结构变形;
BOTDR;
健康监测;
二元线性回归;
【Key words】 metro tunnel; structural deformation; BOTDR; health monitoring; dualistic linear regression;
【Key words】 metro tunnel; structural deformation; BOTDR; health monitoring; dualistic linear regression;
【基金】 国家高技术研究发展计划(863计划);经费资助项目(2001AA602022-1)(2004AA602210-1)。
- 【文献出处】 中国市政工程 ,China Municipal Engineering , 编辑部邮箱 ,2006年06期
- 【分类号】U456
- 【被引频次】27
- 【下载频次】784