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Leakage detection and long-term monitoring in diaphragm wall joints using fiber Bragg grating sensing technology

文献类型：期刊论文

作者Zheng, Yun2; Chen, Congxin2; Liu, Tingting1,2; Shao, Yong2; Zhang, Yapeng2
刊名TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
出版日期2020-04-01
卷号98页码:9
关键词Diaphragm wall Joint Leakage detection FBG
ISSN号0886-7798
DOI10.1016/j.tust.2020.103331
英文摘要Leakage at the joints is the main cause of failure of diaphragm walls. Early warning of such leakage is essential to ensure the safety and security of the excavation itself and nearby buildings. Leakage through a diaphragm wall joint changes the local temperature field due to convection. Therefore, temperature measurements can reveal information related to leakage. In this paper, an efficient method that provides early warning of such leakage was proposed. The method uses a thermometric technique based on fiber Bragg grating (FBG) sensing technology and also allows the diaphragm wall joints to be monitored long-term. To validate the feasibility of using FBG sensing for leak detection and monitoring in diaphragm wall joints, a new laboratory test device which is called a 'leakage detection device based on FBG' was developed. Using this device, the leakage at different locations (depths) within diaphragm wall joints can be simultaneously simulated. Moreover, the occurrence of leakage at each defect can be artificially controlled. In light of the changes observed in the temperature signal corresponding to leakage, the experimental results indicate that using temperature as an indicator of leakage in diaphragm wall joints is very intuitive and effective. According to the temperature distribution along the diaphragm wall joints and the temperature curve generated using the measuring points, the position and time that leakage occurred can be determined.
资助项目National Key R&D Program of China[2017YFC0805307] ; National Natural Science Foundation of China[11602284] ; National Natural Science Foundation of China[51609183] ; Natural Science Foundation of Hubei province, China[2018CFB450]
WOS研究方向Construction & Building Technology ; Engineering
语种英语
WOS记录号WOS:000518873900019
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://119.78.100.198/handle/2S6PX9GI/23684]  
专题中科院武汉岩土力学所
通讯作者Liu, Tingting; Shao, Yong; Zhang, Yapeng
作者单位1.Wuhan Univ Technol, Key Lab Roadway Bridge & Struct Engn, Wuhan 430070, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Zheng, Yun,Chen, Congxin,Liu, Tingting,et al. Leakage detection and long-term monitoring in diaphragm wall joints using fiber Bragg grating sensing technology[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2020,98:9.
APA Zheng, Yun,Chen, Congxin,Liu, Tingting,Shao, Yong,&Zhang, Yapeng.(2020).Leakage detection and long-term monitoring in diaphragm wall joints using fiber Bragg grating sensing technology.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,98,9.
MLA Zheng, Yun,et al."Leakage detection and long-term monitoring in diaphragm wall joints using fiber Bragg grating sensing technology".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 98(2020):9.

入库方式： OAI收割

来源：武汉岩土力学研究所

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