Technical Studies


Fiber Optic Sensor Monitoring for the Tunnel Shielding of the Taipei Rapid Transit Project

The NCTU research team in collaboration with Geotechnical Instrumentation Inc. to develop the techniques of monitoring the deformation of tunnel liners using fiber optic sensors. A series of fiber Bragg grating (FBG) sensors were attached to the reinforcement prior to steel cage assembly and concreting. The embedded FBG sensors were able to record the strain experience by the reinforcement during the process of concrete curing, transportation, field installation and long term service after completion and operation of the rapid transit system.