Three-Dimensional Seismic-Wave Gradiometry for Scalar Waves

2013 ◽  
Vol 103 (4) ◽  
pp. 2151-2160 ◽  
Author(s):  
C. Poppeliers ◽  
P. Punosevac ◽  
T. Bell
Keyword(s):  
Seismic Wave ◽  
Three Dimensional ◽  
Scalar Waves ◽  
Wave Gradiometry

The Effects of Measurement Uncertainties in Seismic-Wave Gradiometry

2015 ◽  
Vol 105 (6) ◽  
pp. 3143-3155 ◽  
Author(s):  
Christian Poppeliers ◽  
Elizabeth V. Evans
Keyword(s):  
Seismic Wave ◽  
Measurement Uncertainties ◽  
Wave Gradiometry

scholarly journals Single Pass Computation of First Seismic Wave Travel Time in Three Dimensional Heterogeneous Media With General Anisotropy

2021 ◽  
Vol 89 (1) ◽  
Author(s):  
François Desquilbet ◽  
Jian Cao ◽  
Paul Cupillard ◽  
Ludovic Métivier ◽  
Jean-Marie Mirebeau
Keyword(s):  
Travel Time ◽  
Seismic Wave ◽  
Heterogeneous Media ◽  
Three Dimensional ◽  
General Anisotropy ◽  
Single Pass ◽  
Wave Travel

scholarly journals Effects of Oblique Incidence of SV Waves on Nonlinear Seismic Response of a Lined Arched Tunnel

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Dunyu Lyu ◽  
Sha Ma ◽  
Chu Yu ◽  
Congcong Liu ◽  
Xiaowei Wang ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Wave Field ◽  
Seismic Response ◽  
Seismic Wave ◽  
Oblique Incidence ◽  
Incident Angle ◽  
Three Dimensional ◽  
Seismic Wave Propagation ◽  
Finite Element Program ◽  
Artificial Boundaries

The incident direction of earthquake motion is an important factor affecting the seismic response of underground structures. In this study, a three-dimensional (3D) oblique incidence method of SV waves is proposed and the effects of incident angles of SV waves on the seismic response of a lined arched tunnel are evaluated. Based on wave field decomposition principle and equivalent node force method and together with viscous-spring artificial boundary, the oblique incidence method of SV waves is implemented by transforming seismic wave field into the equivalent nodal forces acting on the artificial boundaries. By deriving the distance of the incident waves and the reflected wave on free surface to artificial boundaries, this method can comprehensively consider the phase difference of the seismic wave propagation and the influence of the damping effect of the rock medium on the seismic wave propagation. The method is programed into a dynamic finite element program and its effectiveness is examined by a numerical example. Consequently, the oblique incidence method is applied to evaluate the seismic behaviors of the tunnel. The numerical results reveal that (1) the oblique incidence of the seismic wave results in a larger seismic response; (2) the response amplitudes of the stress and displacement increase with the increase of incident angles and reaching the maximum in the case of 30° incident angle; (3) the damage extent increases with an increase in the incident angles, and the oblique incidence of the seismic wave is believed to increase the spatial difference of damage distribution.

Sign in / Sign up

Export Citation Format

Share Document