| Summary: | 碩士 === 國立交通大學 === 土木工程系所 === 105 === Optical fiber Bragg grating (FBG) based sensing technique has gain popularity as a means of strain measurement in civil engineering. The main purpose of this research is to develop an FBG-based strain gauge that can be used for pile dynamic load testing and for long-term monitoring. Taking advantage of the merits of FBG such as moisture tolerance, immunity to lighting and electromagnetic interference (EMI) and multiplexing, the new design using FBG as the sensing element can replace conventional electronic devices. The thesis describes the detailed design, calibration and testing for the new FBG-based strain gauge. In addition, an FBG-based model pile was developed for laboratory lateral load testing. The pile can be used to investigate the load condition and the deformation of a prototype pile. The research results are recorded in this thesis for future references.
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