Seismic response of slopes subjected to incident SV wave by an improved boundary element approach |
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Authors: | Behrouz Gatmiri Khoa‐Van Nguyen Kaveh Dehghan |
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Affiliation: | 1. CERMES, école Nationale des Ponts et Chaussées, 6‐8 avenue Blaise Pascal, Cité Descartes, Champs‐sur‐Marne, 77455 Marne‐la‐Vallée Cedex 2, France;2. Department of Civil Engineering, University of Tehran, Tehran, Iran;3. SEFI‐INTRAFOR, Society in Geotechnics, 9‐11 rue Gustave Eiffel, Grigny 91350, FranceSEFI‐INTRAFOR, 9‐11 rue Gustave Eiffel, Grigny 91350, France;4. Institut de Physique du Globe de Paris, 4 place Jussieu, 75252 Paris cedex 05, France |
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Abstract: | In this paper, an improved boundary element approach for 2D elastodynamics in time‐domain is presented. This approach consists in the truncation of time integrations, based on the rapid decrease of the fundamental solutions with time. It is shown that an important reduction of the computation time as well as the storage requirement can be achieved. Moreover, for half‐plane problems, the size of boundary element (BE) meshes and the computation time can be significantly reduced. The proposed approach is used to study the seismic response of slopes subjected to incident SV waves. It is found that large amplifications take place on the upper surface close to the slope, while attenuations are produced on the lower surface. The results also show that surface motions become very complex when the incident wavelength is comparable with the size of the slope or when the slope is steep. Copyright © 2006 John Wiley & Sons, Ltd. |
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Keywords: | boundary element elastodynamics time‐domain topography slope earthquake |
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