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《Journal of Beijing University of Technology》 2008-09
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Explicit Numerical Wave Method of Analyzing the Topographical Effect on Near-field Wave Diffraction in Saturated Porous Media

LI Li-yun DU Xiu-li (The Key Laboratory of Urban Security and Disaster Engineering,Ministry of Education,Beijing University of Technology,Beijing 100022,China)  
Based on the soil mechanic model in saturated porous media,by combining viscous-spring artificial boundary with the 2-D explicit finite element method,an explicit numerical wave method is proposed to analyze the effect of the local terrain on the dynamic response of saturated site under diffracting earthquake wave field.Then,a 2-D semicircular valley model is used to analyze the topographical effect on the diffracting earthquake wave field in the saturated site.A comparison is made between the numerical solution and the far boundary solution.And the result indicates that the proposed method is correct and applicable.
【Fund】: 国家自然科学基金(50325826,50508002,90510011);; 北京市属市管高校人才强教计划资助项目(05004012200515);; 北京市教育委员会科学技术与研究生建设项目资助(4700001401509).
【CateGory Index】: P315.31
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