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http://dx.doi.org/10.4334/JKCI.2007.19.5.529

Demand Strength Spectrums of Low-Rise Reinforced Concrete Buildings Consisted of Extremely Brittle, Shear and Flexural Failure Systems  

Lee, Kang-Seok (School of Architecture, Chonnam National University)
Kim, Jeong-Hee (Div. of Architectural Engineering, Hanyang University)
Oh, Jae-Keun (R&D Dept., Daelim Industrial Co. Ltd.)
Publication Information
Journal of the Korea Concrete Institute / v.19, no.5, 2007 , pp. 529-537 More about this Journal
Abstract
The purpose of this study is to discuss how strength and ductility of each system in low-rise reinforced concrete buildings composed of extremely brittle, shear and flexural failure lateral-load resisting systems have influence on seismic capacities of the overall system, which is based on nonlinear seismic response analyses of single-degree-of-freedom structural systems. In order to simulate the triple lateral-load resisting system, structures are idealized as a parallel combination of two modified origin-oriented hysteretic models and a degrading trilinear hysteretic model that fail primarily in extremely brittle, shear and flexure, respectively. Stiffness properties of three models are varied in terms of story shear coefficients, and structures are subjected to various ground motion components. By analyzing these systems, interaction curves of demand strengths of the triple system for various levels of ductility factors are finally derived for practical purposes. The result indicates that demand strength levels derived can be used as a basic information for seismic evaluation and design criteria of low-rise reinforced concrete buildings having the triple lateral-load resisting system.
Keywords
lateral-load resisting system; concrete buildings; demand strength; ductility; extremely brittle;
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