Settlement behaviors investigation for underwater tunnel considering the impacts of fractured medium and water pressure

doi:10.1080/1064119X.2020.1737279

	Settlement behaviors investigation for underwater tunnel considering the impacts of fractured medium and water pressure
	Tan, Xuyan 1,3; Chen, Weizhong 1,3; Wang, Luyu 1,2; Yang, Jianping 1,3; Tan, Xianjun 1,3
刊名	MARINE GEORESOURCES & GEOTECHNOLOGY
	2020-03-11
页码	10
关键词	Underwater tunnel fractured rock numerical simulation real-time monitoring settlement
ISSN号	1064-119X
DOI	10.1080/1064119X.2020.1737279
英文摘要	Settlement behavior plays an important role for the stability of underwater tunnel due to the different responses of fractured surrounding rock to external load. In contrast to the traditional analysis method based on continuum mechanics, the presented numerical model using improved hybrid finite element was performed to study the settlement behaviors of structure, and structural health monitoring system (SHMS) was introduced for field verification. The Nanjing Yangtze River tunnel, a typical underwater shield tunnel was selected as a case study for numerical simulation and real-time monitoring. First, an improved numerical model was developed on the basic of our previous research, which considers the impact of natural geological fractures on structure stability. Then, numerical investigation was applied to study the displacement of settlement under different boundary conditions. The differences between intact and fractured surrounding rock were discussed, which denote the response of fractured surrounding rock is significantly larger. To verify the numerical results, SHMS was employed in this project to monitor its mechanical behaviors. On the basis of the mass monitoring data, the analytical method was introduced to investigate the response of tunnel settlement to water pressure, which agreed well with the results obtained from the model of fractured surrounding rock.
资助项目	National Natural Science Foundation of China[51991392]
WOS研究方向	Engineering ; Oceanography ; Mining & Mineral Processing
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000519514000001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23719]
专题	中科院武汉岩土力学所
通讯作者	Chen, Weizhong
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China 2.Delft Univ Technol, Delft Inst Appl Math, Delft, Netherlands 3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Tan, Xuyan,Chen, Weizhong,Wang, Luyu,et al. Settlement behaviors investigation for underwater tunnel considering the impacts of fractured medium and water pressure[J]. MARINE GEORESOURCES & GEOTECHNOLOGY,2020:10.
APA	Tan, Xuyan,Chen, Weizhong,Wang, Luyu,Yang, Jianping,&Tan, Xianjun.(2020).Settlement behaviors investigation for underwater tunnel considering the impacts of fractured medium and water pressure.MARINE GEORESOURCES & GEOTECHNOLOGY,10.
MLA	Tan, Xuyan,et al."Settlement behaviors investigation for underwater tunnel considering the impacts of fractured medium and water pressure".MARINE GEORESOURCES & GEOTECHNOLOGY (2020):10.