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Comparison of Super Structure-Sub Structure Separation Analysis and Unification Analysis about Building Structures
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 Title & Authors
Comparison of Super Structure-Sub Structure Separation Analysis and Unification Analysis about Building Structures
Kim, Jae-Yo; Kim, Jin-Yong; Kang, Su-Min;
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In the case of structural analysis for building structures, the super-structure and the sub-structure are analyzed by using separate structural models in the field because of time saving, facile result interpretation and easy analysis of dynamic behavior. However this separate structural model violated the compatibility condition of structural analysis and it can not consider the interaction of superand sub- structures. In the present study, the analysis results of this separate model were compared to those of the unified model of super- and sub- structures which can consider the interaction of super- and sub- structures and reflect the realistic boundary conditions. According to the comparison results, the the analysis model using separate models can underestimate the member force and deflection of structural members in the super-structures and overestimate the deflection and member force of sub-structures. Therefore, in the case of high-rise buildings, irregular shaped buildings, buildings which are expected to be affected by large differential settlement and remodeling buildings, the unified structural model for super- and sub- structures was recommended for structural analysis instead of the separate structural model.
building analysis;separate model;unified model;interaction of super- and sub-structures;
 Cited by
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