Earthquake input mechanism for time-domain analysis of tunnels in layered ground subjected to obliquely incident P- and SV-waves

doi:10.1016/j.engstruct.2018.12.050

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Earthquake input mechanism for time-domain analysis of tunnels in layered ground subjected to obliquely incident P- and SV-waves
	Zhao, Wusheng; Chen, Weizhong; Yang, Diansen; Tan, Xianjun; Gao, Hou; Li, Can
刊名	ENGINEERING STRUCTURES
	2019
卷号	181 期号:-页码:374-386
关键词	Earthquake-input Tunnel Obliquely incident Time-domain Input motion
ISSN号	0141-0296
DOI	10.1016/j.engstruct.2018.12.050
英文摘要	Time-domain analyses have been widely used to investigate the seismic responses of tunnels. However, the earthquake-input mechanism which significantly influences the results, is not clearly understood, and most extant studies focused on vertically propagating waves. In this study, a series of numerical calculations were conducted to evaluate the performance of several earthquake-input methods for three typical models. The results demonstrate that the combinations of the model base and the input motion should correctly consider the interaction between the two sides of the boundary. Generally, the incident motion at the inner side of the boundary should be used with an elastic base, whereas the within motion at the boundary can be used with a rigid base. However, the rigid base is appropriate only for cases with a large impedance contrast between the two sides of the boundary and cases without outgoing waves at the boundary. Then, an earthquake-input method for the time-domain analysis of tunnels in layered ground subjected to obliquely incident P- and SV-waves was proposed. In this method, the pure incident motion at the model base is applied with an elastic base, whereas the within motions at the left boundary are applied with a rigid base. In addition, the right boundary is characterized by absorbing-elements. The closed-form solutions of the applied motions at the boundaries were presented. The proposed earthquake-input method was verified by comparing with closed-form solutions for two specific problems.
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000456754400028
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/15045]
专题	岩土力学所知识全产出_期刊论文
作者单位	Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Wusheng,Chen, Weizhong,Yang, Diansen,et al. Earthquake input mechanism for time-domain analysis of tunnels in layered ground subjected to obliquely incident P- and SV-waves[J]. ENGINEERING STRUCTURES,2019,181(-):374-386.
APA	Zhao, Wusheng,Chen, Weizhong,Yang, Diansen,Tan, Xianjun,Gao, Hou,&Li, Can.(2019).Earthquake input mechanism for time-domain analysis of tunnels in layered ground subjected to obliquely incident P- and SV-waves.ENGINEERING STRUCTURES,181(-),374-386.
MLA	Zhao, Wusheng,et al."Earthquake input mechanism for time-domain analysis of tunnels in layered ground subjected to obliquely incident P- and SV-waves".ENGINEERING STRUCTURES 181.-(2019):374-386.