LONGITUDINAL DEFORMATION MONITORING AND NUMERICAL SIMULATION OF EXISTING SUBWAY TUNNEL BASED ON LONG GAUGE FIBER BRAGG GRATING
TAN Lin-bo1，TAO Jin2，SHEN Sheng3，SHEN Chen4，YANG Ming-yue1，WU Gang1
1.College of Civil Engineering of Southeast University, 210096, Nanjing, China; 2.Southeast University Key Laboratory of Concrete and Prestressed Concrete Structures, Ministry of Education, 210096, Nanjing, China; 3.Fuzhou University, 350108, Fuzhou, China; 4.Beijing City Subway Construction and Installation Engineering Company, 100088,Beijing, China
Abstract：
The engineering case study is the water conveyance tunnel shield of South-to-north Water Diversion Project under the existing subway tunnel. The two sets of optical fiber Bragg grating sensor are arranged respectively along the longitudinal in both the top and bottom of the tunnel structure. By quantitative analysis of evaluation of the corresponding data in the process of acquisition, we found that both the uneven distribution of tunnel longitudinal strain change value, undulate change, and "end effect" is apparent and the safety of the tunnel structure is under control.
TAN Lin-bo,TAO Jin,SHEN Sheng et al. LONGITUDINAL DEFORMATION MONITORING AND NUMERICAL SIMULATION OF EXISTING SUBWAY TUNNEL BASED ON LONG GAUGE FIBER BRAGG GRATING[J]. Architecture Technology, 2016, 47(5): 453-.
