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http://dx.doi.org/10.5000/EESK.2002.6.2.029

Estimation of Response Modification Factor and Nonlinear Displacement for Moment Resisting Reinforced Concrete Frames  

김길환 (부산대학교 대학원)
전대한 (동서대학교 건축공학과)
이상호 (부산대학교 건축공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.6, no.2, 2002 , pp. 29-37 More about this Journal
Abstract
The purpose of this study is to provide a fundamental data of earthquake resistant design through the estimation of the response modification factor and nonlinear displacement for moment resisting reinforced concrete frames by linear and nonlinear static analysis. The analysis models are designed in accordance with AIK code and then, estimated the response modification factor and nonlinear displacement of the buildings. The parameters such as story numbers(10, 20, 30), plan ratios(1:1, 1:2) and analysis types(2D, 3D) of building structure are chosen for use in this study. After comparing the results of linear and nonlinear static analysis, the response modification factor is obtained as the product of four factors: ductility factor, strength factor, damping factor and redundancy factor. The response modification factor are close to 3.5 in case of 2 span, 4.3 in case of 3 span and 5.0 in case 4 or more span models regardless number of stories and plan ratios. The nonlinear displacement is evaluated from the ratio of story drift angle(nonlinear drift/linear drift). The ratio of story drift angle increases as story numbers increase and the value varies from 5.85 to 9.34.
Keywords
response modification factor; strength factor; ductility factor; nonlinear displacement;
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