A case study of strain monitoring of tunnel liner based on Fiber Bragg Grating (FBG) sensor

被引：0

作者：

Lai, Jin-xing ^{[1
]}

Ke, Wang ^{[2
]}

Guo, Chun-xia ^{[3
]}

Liu, Bang-zhe ^{[3
]}

Dong, Zhi-chao ^{[3
]}

机构：

[1] Key Laboratory for Bridge and Tunnel of Shaanxi Province, Chang'an University, Xi'an, China

[2] School of Highway, Chang'an University, Xi'an, China

[3] School of Science, Xi'an University of Architecture and Technology, Xi'an, China

来源：

Electronic Journal of Geotechnical Engineering | 2014年 / 19卷 / 0T期

关键词：

Concretes - Electric sensing devices - Strain rate - Tunnels;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The health monitoring of tunnel engineering has been an important task under the conditions of construction stage and service stage. And Fiber Bragg Grating (FBG) Sensor, being a new type of optical fiber sensor (OFS), has been applied to the health monitoring and long-term monitoring of civil engineering. Based on the second longest highway tunnel in China, FBG technology was adopted to measure the early strain of its second liner concrete. The result show that carrying capability of the test point on cross section of second liner concrete is mainly tensile stress, and turned to be pressure stress gradually. Changing rate of strain of the concrete on outer edge of second liner is higher than that of the inner edge, and such change indicates the complexity of the interaction between wall rock and liner structure. © 2012 ejge.

引用

页码：4709 / 4715