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자료유형
학술저널
저자정보
Huang, Xiaofei (State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University) Yang, Meng (State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University) Feng, Longlong (Gansu Middle East Construction Management Consulting Group) Gu, Hao (State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University) Su, Huaizhi (State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University) Cui, Xinbo (Information Center of land and resources in binzhou city) Cao, Wenhan (State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University)
저널정보
테크노프레스 Smart structures and systems Smart structures and systems 제20권 제1호
발행연도
2017.1
수록면
75 - 83 (9page)

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Effectively monitoring the concrete cracks is an urgent question to be solved in the structural safety monitoring while cracks in hydraulic concrete structures are ubiquitous. In this paper, two experiments are designed based on the measuring principle of Pulse-Pre pump Brillouin Optical Time Domain Analysis (PPP-BOTDA) utilizing Brillouin optical fiber sensor to monitor concrete cracks. More specifically, "V" shaped optical fiber sensor is proposed to determine the position of the initial crack and the experiment illustrates that the concrete crack position can be located by the mutation position of optical fiber strain. Further, Brillouin distributed optical fiber sensor and preinstall cracks are set at different angles and loads until the optical fiber is fractured. Through the monitoring data, it can be concluded that the variation law of optical fiber strain can basically reflect the propagation trend of the cracks in hydraulic concrete structures.

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