Evaluating the Effect of the Thickness and Yield Point of Steel on the Response Modification Factor of RC Frames Braced with Steel Plate

Abstract

Steel Shear Walls (SSW) in buildings are known to be an effective means for resisting lateral loading. By using un-stiffened walls and allowing them to buckle, their energy dissipation capacity will increase significantly due to the post-buckling capacity. The features of this system are being economical, quick and easy construction, low weight compared to similar systems, high ductility, high energy absorption and substantially reducing residual stress in structures. New methods and technologies obtained in the field of metals have provided new steel materials (LYP) to that has lower yield strength than conventional steel A36. This type of steel material shows the ability to deform and absorb more energy before failure. In this study the behavior of reinforced concrete frames braced with steel shear walls (LYP) was investigated and compared with other medium and high strength steel with different thicknesses. A nonlinear pushover analysis was performed. The effect of thickness of steel plate on the response modification factor was investigated. The results show that the lateral load capacities of RC frames braced with steel shear walls increase significantly and the response modification factors of RC frames braced with thin LYP steel plate is higher than the other systems.