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Seismic performance evaluation procedure of asymmetric plan structures

Journal of Harbin Institute of Technology(New Series) 2011年第3期18卷 21-26页

作者：李宁翟长海谢礼立 School of Civil Engineering Tianjin University/Key Laboratory of Coast Civil Structure SafetyMinisitry of Education School of Civil Engineering Harbin Institute of Technology Institute of Engineering Mechanics China Earthquake Administration

plan asymmetry leads to lateral-rotational coupled effects on structural response *** investigation deals with a simplified method for performance estimation of structures with asymmetric *** taking the eccentric characteristics of structures into account,an equivalent triple-degree of freedom (ETDOF) system,which is constructed by eccentric mass,rigid links and springs,is *** modal pushover analysis (MPA) method for asymmetric plan structures is *** target displacement is determined by constant strength *** applicability of proposed method is discussed.A generic mass eccentric 4-story steel frame is analyzed by the proposed MPA procedure and nonlinear time history analysis (NTHA).The results show that the maximum deformation obtained from MPA has a good agreement with the NTHA *** proposed MPA procedure is reliable and effective for evaluating the performance of asymmetric plan structures.

关键词： rotation response modal pushover analysis nonlinear static analysis performance estimation plan asymmetric

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Earthquake response of asymmetric building with MR damper

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Earthquake Engineering and Engineering Vibration 2014年第2期13卷 305-316页

作者： S.D.Bhart S.M.Dumne M.K.Shrimali Department of Civil Engineering Malaviya National Institute of Technology Jaipur Govt.Poly.College Nashik Maharashtra India

plan asymmetric buildings are very susceptible to earthquake induced damage due to lateral torsional coupling, and the corners of these systems suffer heavy damage during earthquakes. Therefore, it is important to investigate the seismic behavior of an asymmetric plan building with MR dampers. In this study, the effectiveness of MR damper-based control systems has been investigated for seismic hazard mitigation of a plan asymmetric building. Furthermore, the infl uence of the building parameters and damper command voltage on the control performance is examined through parametric study. The building parameters chosen are eccentricity ratio and frequency ratio. The results show that the MR damper-based control systems are effective for plan asymmetric systems.

关键词： torsional coupling plan asymmetric MR damper

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