doi:10.3850/978-981-08-9247-0_rp085-icsas11

ABSTRACT

Steel plate shear walls (SPW) are a new lateral load resisting system which has been used in steel construction in recent years. The post-buckling capacity, considerable lateral stiffness and deformability make SPWs advantageous to both braced and moment resisting frames. Due to system behavior in the plastic domain and high energy dissipation, application of SPWs has grown in high-risk earthquake zones. Exerting architectural criteria, mechanical pipe installation and building beauty are important factors. Small and big openings in SPWs such as doors and windows make sensible reduction of stiffness and strength in the walls, which cause faster instability during earthquake loads. In this research an SPW’s infill plate has been stiffened by diagonal stiffeners, which have shape of X and Lozenge. Three 1-story SPWs with different dimensions are considered here. Openings are assumed to be square and are placed in center of SPW. In which, the effect of stiffener shape and opening size are studied using the well-known finite element package ABAQUS. The displacement-controlled scheme was selected for the specimens and load–displacement curves are obtained. The effect of diagonal stiffeners is investigated on seismic parameters such as strength, rigidity, energy absorption and ductility. The obtained results are also compared with infill equaling thicker but plain plate. In this study, the strength and rigidity reduction of opening could be compensated with diagonal stiffeners. Increase of seismic parameters is dependent on wall dimension, stiffener shape and opening size, which have been fully investigated in this paper.

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