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http://dx.doi.org/10.5000/EESK.2003.7.6.001

A New Hybrid Method for Nonlinear Soil-Structure Interaction Analysis  

김재민 (여수대학교 건설환경공학부)
최준성 (한국유지관리㈜)
이종세 (한양대학교 건설교통학부)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.7, no.6, 2003 , pp. 1-7 More about this Journal
Abstract
This paper presents a novel hybrid time-frequency-domain method for nonlinear soil-structure interaction(SSI) analysis. It employs, in a practical manner, a computer code for equivalent linear SSI analysis and a general-purpose nonlinear finite element program. The proposed method first (calculates dynamic responses on a truncated finite element boundary utilizing an equivalent linear SSI program in the frequency domain. Then, a general purpose nonlinear finite element program is employed to analyze the nonlinear SSI problem in the time domain, in which boundary conditions at the truncated boundary are imposed with the responses calculated in the previous frequency domain SSI analysis, In order to validate the proposed method, seismic response analyses are carried out for a 2-D underground subway station in a multi-layered half-space, For the analyses, a equivalent linear SSI code KIESSI-2D is coupled to ANSYS program. The numerical results indicate that the proposed methodology can be a viable solution for nonlinear SSI problems.
Keywords
nonlinear dynamic analysis; soil-structure interaction; hybrid method;
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