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10- Parvanova

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Page 20: ˘ˇˆ ˙˝˛ ˆ ˙˝ ˛ *))))+0 ˇ( SH - qom.ac.ircer.qom.ac.ir/article_992_f61b04b8e67be6f2278f6021860f3f... · 2020. 5. 26. · farshid.yasemi@iauz.ac.ir 1 -1 ˙ >?3 *0 @˚˚3

Journal of Civil and Environmental Researches Vol. 3, Issue. 2, Winter 2018

* Corresponding author

Amplification Pattern of the Ground Surface In-cluding Underground Circular Inclusion Sub-jected to Incident SH-Waves In this paper, amplification pattern of the ground surface was pre-sented in the presence of an underground circular inclusion by a half-plane time-domain boundary element method (BEM). Based on the mentioned method, it was required that only the interface was discretized to create the inclusion model. Avoiding from dis-cretizing the smooth ground surface as well as enclosing bounda-ries were the distinguished advantages of the present study com-pared with traditional BEM studies. After implementing the meth-od in a general computer algorithm, the results were verified compared to existing literature responses. Finally, with consider-ing some intended parameters including incident wave angle, in-clusion depth, horizontal location and impedance ratio, a sensitiv-ity analysis was carried out to obtain the maximum amplification of the surface. The results showed that seismic ground response was affected by all these parameters. The results can be used for creating safe domains, passive defense topic and also validating seismic codes. Keywords: Half-plane BEM, Time Domain, Circular Inclusion, SH-wave, Surface Response.

M. Panji*

Assistant Professor, Department of Civil

Islamic Azad Engineering, .University of Zanjan

e-mail: [email protected]

F. Yasemi

M.Sc. Student, Department of Islamic Civil Engineering,

.Azad University of Zanjan

e-mail: [email protected]