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http://dx.doi.org/10.5000/EESK.2007.11.5.011

An equivalent model for the seismic analysis of high-rise shear wall apartments  

Kim, Tae-Wan (창.민우 구조 컨설탄트)
Park, Yong-Koo (성균관대학교 건축공학과 대학원)
Kim, Hyun-Jung (㈜ E & C)
Lee, Dong-Guen (성균관대학교 건축공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.11, no.5, 2007 , pp. 11-21 More about this Journal
Abstract
Currently in the country, the necessity of seismic analyses is increasing due to the increase of demand and interest in seismic design. Especially, shear wall apartments are constructed mostly for a residental building so seismic analyses for the apartment are actively executed. For the seismic analysis of the shear wall apartment, it may be not efficient in time and effort to model the entire structure by a finite element mesh. Therefore, an equivalent model is needed to simulate the dynamic behavior of the structure by decreasing the number of degrees of freedom. In this study, a method to form an equivalent model that is simple and easy to use was proposed utilizing effective mass coefficient that is highly correlated to mode shape of the structure. This equivalent model was obtained by replacing a shear wall structure with an equivalent frame structure having beams and columns. This model can be used very effectively when excessive seismic analyses are necessary in a short period because it can be operated in any commercial program and reduce the analysis time. Also, it can model floor slabs so it can represent the actual behavior of shear wall apartments. Furthermore, it is very excellent since it can represent the asymmetry of the structure.
Keywords
Seismic analysis; equivalent model; mode shape; effective mass; shear wall apartment;
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