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Experimental formula for the fundamental period of RC buildings with shear-wall dominant systems

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This study focused on evaluating the reliability of code formulas such as those of the current Korean Building Code, UBC 1997, NBCC 1995 and BSLJ 1994 for estimating the fundamental period of RC buildings with shear-wall dominant systems, representative of typical residential building in South-East Asia. For this purpose, full-scale measurements were carried out on fifty RC apartment buildings, and these results were compared with those obtained by code formulas and also by dynamic analysis. Although these code formulas are based on the measured periods of buildings during various earthquakes and building period varies with the amplitude of structural deflection or strain level, ambient surveys should provide an effective tool for experimentally verifying the design period of the completed building. This comparison shows that comparatively large errors are likely to occur when the code formula of KBC, which is based on UBC 1988, is used, and none of the other code formulas examined in this study are sufficient for estimating the fundamental period of apartment buildings with shear-wall dominant systems. An improved formula is proposed by regression analysis on the basis of the measured period data. Copyright © 2000 John Wiley & Sons, Ltd.
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Document Type: Research Article

Affiliations: 1: Department of Architectural Engineering, Hanyang University, Seoul, 133-791, Korea 2: Department of Architectural Engineering, Seoul National University of Technology, Seoul, Korea

Publication date: 2000-09-01

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