A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Foundation pit concrete beam supporting body crack monitoring device and monitoring method thereof
The invention belongs to the field of concrete crack monitoring, and particularly relates to a foundation pit concrete beam supporting body crack monitoring device and a monitoring method thereof. The foundation pit concrete beam supporting body crack monitoring device comprises a to-be-measured concrete beam, an optical cable and demodulation equipment; the optical cable is arranged on the to-be-measured concrete beam through internal burial and surface distribution; the demodulation equipment comprises an OFDR distributed optical fiber sensor and a matched computer, and the demodulation equipment is connected to monitor optical fiber strain values; and the positions and development rules of cracks in the concrete are monitored in real time by analyzing the strain in the concrete. The device is simple in structure and easy to install, the optical fiber sensing technology is combined, distributed real-time crack monitoring can be conducted on the foundation pit concrete supporting body, the sensitivity is high, the reliability is high, current electromagnetism is not involved, and the safety performance is relatively good.
本发明属于混凝土裂纹监测领域，特别是涉及一种基坑混凝土梁支护体裂纹监测装置及其监测方法，包括待测混凝土梁、光缆和解调设备三个部分；将光缆通过内埋、表面布设在待测混凝土梁，解调设备包括OFDR分布式光纤传感仪和配套电脑，连接解调设备监测光纤应变值，通过分析混凝土内应变大小来实时监测混凝土内裂纹的位置和发展规律。本发明结构简单，易于安装，结合了光纤感测技术，能够对基坑混凝土支护体进行分布式实时的裂纹监测，灵敏度高，可靠性强，并且不涉及电流电磁，安全性能相对较好。
Foundation pit concrete beam supporting body crack monitoring device and monitoring method thereof
The invention belongs to the field of concrete crack monitoring, and particularly relates to a foundation pit concrete beam supporting body crack monitoring device and a monitoring method thereof. The foundation pit concrete beam supporting body crack monitoring device comprises a to-be-measured concrete beam, an optical cable and demodulation equipment; the optical cable is arranged on the to-be-measured concrete beam through internal burial and surface distribution; the demodulation equipment comprises an OFDR distributed optical fiber sensor and a matched computer, and the demodulation equipment is connected to monitor optical fiber strain values; and the positions and development rules of cracks in the concrete are monitored in real time by analyzing the strain in the concrete. The device is simple in structure and easy to install, the optical fiber sensing technology is combined, distributed real-time crack monitoring can be conducted on the foundation pit concrete supporting body, the sensitivity is high, the reliability is high, current electromagnetism is not involved, and the safety performance is relatively good.
本发明属于混凝土裂纹监测领域，特别是涉及一种基坑混凝土梁支护体裂纹监测装置及其监测方法，包括待测混凝土梁、光缆和解调设备三个部分；将光缆通过内埋、表面布设在待测混凝土梁，解调设备包括OFDR分布式光纤传感仪和配套电脑，连接解调设备监测光纤应变值，通过分析混凝土内应变大小来实时监测混凝土内裂纹的位置和发展规律。本发明结构简单，易于安装，结合了光纤感测技术，能够对基坑混凝土支护体进行分布式实时的裂纹监测，灵敏度高，可靠性强，并且不涉及电流电磁，安全性能相对较好。
Foundation pit concrete beam supporting body crack monitoring device and monitoring method thereof
一种基坑混凝土梁支护体裂纹监测装置及其监测方法
LI HONG (author) / KE LEI (author) / PAN YE (author) / ZHANG JIQING (author) / LIU KUN (author) / YE SHUHAO (author) / LIU YUNLIANG (author) / CHANG FA (author) / SUN SHOUJUN (author) / WANG GUOSHUAI (author)
2021-05-07
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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