Author： Magar Patil H.R. Jangid R.S.
Publisher： Taylor & Francis Ltd
E-ISSN： 1937-3279|8|3|165-174
ISSN： 1937-3260
Source： The IES Journal Part A: Civil & Structural Engineering, Vol.8, Iss.3, 2015-07, pp. : 165-174
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Abstract
The seismic performance assessment of modified steel moment-resisting frame (SMRF) was carried out by nonlinear time-history analysis. The basic bare SMRF was reduced in strength first and then enhanced by installing passive energy dissipating devices (EDDs) to develop modified frame. Passive EDDs comprise both rate-dependent and rate-independent devices. Viscous fluid damper (VFD) is a rate-dependent device whereas buckling-restrained brace is a rate-independent device. The lateral strength of structure was improved by using these devices either alone or in combination. Seven-scaled time-history records were used for incremental dynamic analysis. The stiffness effect on the stories is demonstrated through the lateral displacement profile of the building. The VFD is found to be a good EDD as it significantly improved the performance of the frame at all levels of seismic analysis.
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