Abstract
In this paper, the seismic response of elastic homogeneous ground surface was presented in the presence of unlined horseshoe-shaped underground cavities subjected to obliquely propagating incident SH-waves by using the time-domain half-plane boundary element method (BEM). The Ricker wavelet was considered for the incident wave function. In the use of the proposed method, the boundary around the tunnel was only required to be discretized. After comparing the results of the present study with existing analytical responses, it was found that the method had good accuracy in modeling horseshoe-shaped tunnels. The responses are presented as two-/three-dimensional diagrams in the time/frequency domain. Also, a comparative study is carried out between circular and horseshoe cross-sections to observe the effect of the geometry on the response pattern. The results show that the existence of subsurface openings as well as horseshoe-shaped cavities has a significant effect on the variation of seismic patterns and critical states of the ground surface. The used method can be proposed to geotechnical engineers for preparing simple underground models to achieve the transient responses.
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Panji, M., Mojtabazadeh-Hasanlouei, S. & Fakhravar, A. Seismic Response of the Ground Surface Including Underground Horseshoe-Shaped Cavity. Transp. Infrastruct. Geotech. 9, 338–355 (2022). https://doi.org/10.1007/s40515-021-00178-3
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DOI: https://doi.org/10.1007/s40515-021-00178-3