STUDY ON THE APPLICATION OF FBG SENSOR FOR PRESTRESS MONITORING

Contraposed to tradition detection for prestress, a kind of stickup Fiber optic Bragg (FBG) sensor is adopted to monitor the prestress in this paper. At the same time, based on the basic theory of the fiber optical Bragg sensor (FBG), with the compared experiment of the FBG senor and the common electricity sensor stuck on the anchor, the result shown that the FBG sensors have a high measurement precision lever?good antiinterference ability and longtern stability, simple structure and it can realize a realtime and online monitoring?It has an extensive foreground in the civil engineering.