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Comparison of nonlinear behavior of steel moment frames accompanied with RC shear walls or steel bracings
Author(s) -
Esmaeili Hamed,
Kheyroddin Ali,
Kafi Mohammad Ali,
Nikbakht Hamed
Publication year - 2011
Publication title -
the structural design of tall and special buildings
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 43
eISSN - 1541-7808
pISSN - 1541-7794
DOI - 10.1002/tal.751
Subject(s) - structural engineering , ductility (earth science) , moment (physics) , shear wall , structural system , shear (geology) , nonlinear system , reinforced concrete , structural load , materials science , geotechnical engineering , engineering , composite material , physics , creep , classical mechanics , quantum mechanics
SUMMARY In this paper, the seismic behavior of dual structural systems in forms of steel moment‐resisting frames accompanied with reinforced concrete shear walls and steel moment‐resisting frames accompanied with concentrically braced frames, have been studied. The nonlinear behavior of the mentioned structural systems has been evaluated as, in earthquakes, structures usually enter into an inelastic behavior stage and, hence, the applied energy to the structures will be dissipated. As a result, some parameters such as ductility factor of structure ( μ ), over‐strength factor ( R s ) and response modification factor ( R ) for the mentioned structures have been under assessment. To achieve these objectives, 30‐story buildings containing such structural systems were used to perform the pushover analyses having different load patterns. Analytical results show that the steel moment‐resisting frames accompanied with reinforced concrete shear walls system has higher ductility and response modification factor than the other one, and so, it is observed to achieve suitable seismic performance; using the first system can have more advantages than the second one. Copyright © 2011 John Wiley & Sons, Ltd.