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Earthquake Response Analyses of Underground Structures Using Displacement Responses of Soil  

Kim, Doo-Kie (군산대학교 토목환경공학부)
Seo, Hyeong-Yeol (군산대학교 토목환경공학부)
Park, Jin-Woo (군산대학교 토목환경공학부)
Choe, In-Jung (군산대학교 토목환경공학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.10, no.6, 2006 , pp. 133-142 More about this Journal
Abstract
This study performed earthquake response analyses of underground structures using displacement responses of soil. In this study, spring coefficients of surrounding soil proposed by specifications and researchers were adopted and then their corresponding analysis results were compared. The free field analyses using ProShake were carried out in order to predict ground responses of the field without underground structures. Several earthquakes such as El Centro, Ofunato, and Hachinohe earthquakes were considered to calculate maximum displacements. Numerical examples were analyzed, and then the results were compared and commented depending on spring coefficients of soil for the analyses using displacement responses of soil. The soil coefficients ranged from 0.05 to 14.39 times of those calculated by Korean Bridge Design Specification (2005). In conclusion, the coefficients of soil proposed by standard specifications seemed to be overestimated compared with those by the finite element method(FEM).
Keywords
Underground structure; Displacement response method; Spring coefficient of soil; Seismic design;
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