Fluid-solid coupling response of shield tunnel lining structure under high water pressure

doi:10.1080/1064119X.2021.1971805

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Fluid-solid coupling response of shield tunnel lining structure under high water pressure
	Cheng, Xuansheng 1; Zhang, Shanglong 2; Qi, Lei 2; Zhou, Xinhai 2
刊名	MARINE GEORESOURCES & GEOTECHNOLOGY
	2021-08
关键词	Underwater shield tunnel lining structure the modified conventional method numerical analysis fluid-solid coupling high water pressure
ISSN号	1064-119X
DOI	10.1080/1064119X.2021.1971805
英文摘要	When a river-crossing shield tunnel is excavated in water-rich soft clay strata, the mechanical properties of the segment lining structure are significantly affected by the water pressure and fluid-solid coupling, especially when the water level changes under the effect of tides. In this study, based on the modified conventional method, the mechanics and deformation characteristics of a lining structure under different high water pressures and fluid-soil coupling effects were analyzed by a finite difference method. The results show that when the water level increases, the axial force of each part of the lining structure increases and the bending moment decreases gradually. The lining structure of underwater tunnel presents a transverse duck-egg deformation with vertical shrinkage and transverse expansion under fluid-solid coupling action. Due to large bending moment, small axial force, and large displacement at the vault and arch bottom of the lining structure, the segment concrete in these parts cracks easily and the joints are prone to warping. Considering fluid-solid coupling effect when an underwater shield tunnel passes through high water pressure strata, the axial force of the segment lining structure is large and the bending moment is small, which makes the stress of the lining structure more reasonable.
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:000696860200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148692]
专题	土木工程学院
作者单位	1.Lanzhou Univ Technol, Western Engn Res Ctr Disaster Mitigat Civil Engn, Minist Educ, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Key Lab Disaster Prevent & Mitigat Civil Engn Ga, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Xuansheng,Zhang, Shanglong,Qi, Lei,et al. Fluid-solid coupling response of shield tunnel lining structure under high water pressure[J]. MARINE GEORESOURCES & GEOTECHNOLOGY,2021.
APA	Cheng, Xuansheng,Zhang, Shanglong,Qi, Lei,&Zhou, Xinhai.(2021).Fluid-solid coupling response of shield tunnel lining structure under high water pressure.MARINE GEORESOURCES & GEOTECHNOLOGY.
MLA	Cheng, Xuansheng,et al."Fluid-solid coupling response of shield tunnel lining structure under high water pressure".MARINE GEORESOURCES & GEOTECHNOLOGY (2021).