Real-Time Measurement of Soil Shear Profiles with Distributed Optical Sensing Probe

摘要：

Conventional measurement strategies of liquefied soil shear response to ground motions requires involve bulky and costly arrays of sensor bundles. In this work, an optical fiber with multiplexed fiber Bragg grating strain sensors is bonded to highly-flexible metallic strip, which is inserted vertically through the soil. As the soil is sheared due to horizontal ground motion, the strip bends, resulting in strain. The strain-to-displacement conversion is done via planar linear and nonlinear elastic bending models. This approach was tested and verified as viable in an experiment on a shake table subject to scaled earthquake ground motions.

关键词： Bragg grating tunable Fabry-Perot filter FBG soil shear distributed monitoring

作者: M.D.Todd L.A.Overbey

作者单位: Department of Structural Engineering, University of California San Diego, M/C 0085, La Jolla, CA 92093-0085, USA

会议类型: 国际会议

会议名称: The 2nd International Workshop on Opto-electronic Sensor-based Monitoring in Geo-engineering(第二届地质(岩土)工程光电传感监测国际研讨会)

会议地点: 南京

会议语种:英文

页码: 62-68

在线出版日期: 2007-10-18（万方平台首次上网日期，不代表论文的发表时间）