Seismic performance of dual eccentrically braced steel frames equipped with fluid viscous dampers
Abstract eng: Over the past two decades, Fluid Viscous Dampers (FVDs) have found numerous applications in both new and existing steel framed buildings, with the aim to improve the seismic earthquake resistance. However, the use of FVDs in dual frame structures, constituted by Moment Resisting Frames (MRFs) and Eccentrically Braced Frames (EBFs) has not been met. This paper investigates numerically the effectiveness of FVDs to enhance the seismic response of dual high strength steel eccentrically framed structures. A 3D seven story steel structure, with perimeter dual eccentrically braced frames, situated in Bucharest, designed according to Romanian seismic design code P100-1 (2013) and EN 1993-1-1 (2005), has been considered. Then, the structure has been equipped with FVDs that provide different supplemental damping ratios. Comparative nonlinear time history analyses of the unequipped and equipped structures have been performed with accelerograms of Vrancea 1977 type. The seismic performances of the considered structures have been assessed in terms of peak base shears, inter-story drift ratios, links rotations and absolute story accelerations. The numerical results demonstrate the potential of this technique for the seismic protection of dual steel frames.
Publisher:
Taylor and Francis Group, London, UK
Conference Title:
Conference Title:
Sixth International Conference on Structural Engineering, Mechanics and Computation
Conference Venue:
Cape Town, South Africa
Conference Dates:
2016-09-05 / 2016-09-07
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2016-09-20, last modified 2016-09-20
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