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Abstract:
The incident direction of earthquake waves has significance on the seismic responses of long lined tunnels. In this study, based on the equivalent node force method and together with the viscous-spring artificial boundary, the 3-D input method of SV and SH-waves with arbitrary incident angles is studied firstly. The input method is introduced within the framework of ABAQUS software and is verified by two numerical examples. Consequently, the proposed input method is employed to investigate the impact of the incident angles of SV and SH-waves on the seismic responses of a long lined tunnel. The numerical results indicate that the non-linear seismic responses of long lined tunnels are highly affected by the incident angles of S-waves. As the incident directions of SV and SH-waves being not perpendicular to the tunnel longitude, non-uniform motions appear along the tunnel longitude, as well as the longitudinal internal forces. The plastic deformation and strain components along the tunnel cross-section are also influenced by the incident angles of SV and SH-waves. It is thus important to include the incident angles of earthquake waves in mapping the seismic risk of tunnels. (C) 2017 Elsevier B.V. All rights reserved.
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Source :
ENGINEERING GEOLOGY
ISSN: 0013-7952
Year: 2017
Volume: 222
Page: 168-185
7 . 4 0 0
JCR@2022
ESI Discipline: GEOSCIENCES;
ESI HC Threshold:163
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 94
SCOPUS Cited Count: 102
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 5
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