Investigating the Deformation and Failure Mechanism of a Submarine Tunnel with Flexible Joints Subjected to Strike-Slip Faults

doi:10.3390/jmse9121412

	Investigating the Deformation and Failure Mechanism of a Submarine Tunnel with Flexible Joints Subjected to Strike-Slip Faults
	Zhou, Guangxin 3,4; Sheng, Qian 3,4; Cui, Zhen 3,4; Wang, Tianqiang 2; Ma, Yalina 1,3,4
刊名	JOURNAL OF MARINE SCIENCE AND ENGINEERING
	2021-12-01
卷号	9 期号:12 页码:21
关键词	submarine tunnels strike-slip faults a tunnel with flexible joints model test numerical simulation
DOI	10.3390/jmse9121412
英文摘要	Knowledge from historical earthquake events indicates that a submarine tunnel crossing active strike-slip faults is prone to be damaged in an earthquake. Previous studies have demonstrated that the flexible joints are an effective measure for a submarine tunnel crossing a strike-slip fault. The background project of this paper is the second submarine tunnel of Jiaozhou bay. In this work, model tests and numerical simulations are conducted to investigate the deformation and failure mechanism of a submarine tunnel with flexible joints under a strike-slip fault dislocation. The influence of strike-slip faults on a tunnel with flexible joints has been investigated by examining the deformation of rock mass surface, analyzing lining stains, and crack propagation from model tests. Numerical simulations are conducted to study the effects of the design parameters of a tunnel with flexible joints on the mechanical response of the lining. The results showed that the 'articulated design' measure can improve the ability of the tunnel to resist the strike-slip faults. In terms of the mechanism of design parameters of a tunnel with flexible joints, this paper finds that increasing the lining thickness, decreasing the lining segment length, and decreasing the tunnel diameter to a reasonable extent could effectively improve the performance of this faulting resistance measure for a tunnel under the strike-slip fault zone dislocation. Compared with the horseshoe tunnel cross-section, the circular tunnel cross-section can improve the ability of the faulting resistance of a tunnel with flexible joints, while the optimal angle of the tunnel crossing the fault zone is 90o. It is concluded that the wider fault zone, smaller flexible joint width, and less stiffness of the flexible joint could make lining safer under a strike-slip fault dislocation. The above research results can serve as a necessary theoretical reference and technical support for the design of reinforcement measures for a submarine tunnel with flexible joints under strike-slip fault dislocation.
资助项目	National Natural Science Foundation of China[51779253] ; National Natural Science Foundation of China[52079133] ; Key Laboratory for Geo-Mechanics and Deep Underground Engineering, China University of Mining Technology[SKLGDUEK1912] ; CRSRI Open Research Program[SN: CKWV2019746/KY] ; MOE Key Lab of major Disaster Forecast and Control in Engineering, Jinan University[20200904002]
WOS研究方向	Engineering ; Oceanography
语种	英语
出版者	MDPI
WOS记录号	WOS:000738542200001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/30841]
专题	中科院武汉岩土力学所
通讯作者	Cui, Zhen
作者单位	1.CCCC Second Highway Consultant Co Ltd, Wuhan 430056, Peoples R China 2.Southwest Jiaotong Univ, Key Lab Transportat Tunnel Engn, Minist Educ, Chengdu 610031, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Guangxin,Sheng, Qian,Cui, Zhen,et al. Investigating the Deformation and Failure Mechanism of a Submarine Tunnel with Flexible Joints Subjected to Strike-Slip Faults[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2021,9(12):21.
APA	Zhou, Guangxin,Sheng, Qian,Cui, Zhen,Wang, Tianqiang,&Ma, Yalina.(2021).Investigating the Deformation and Failure Mechanism of a Submarine Tunnel with Flexible Joints Subjected to Strike-Slip Faults.JOURNAL OF MARINE SCIENCE AND ENGINEERING,9(12),21.
MLA	Zhou, Guangxin,et al."Investigating the Deformation and Failure Mechanism of a Submarine Tunnel with Flexible Joints Subjected to Strike-Slip Faults".JOURNAL OF MARINE SCIENCE AND ENGINEERING 9.12(2021):21.