Nonlinear response of steel plate shear walls under lateral loads with regards to the beam-column connections, including moment resisting and reduced beam sections is studied; and the effects of connection type on the section design and load-carrying components of shear wall system elements are outlined. Using one- and four- story models, the failure modes and the sequence of plasticity in plates and boundary members, the stiffness variation of system, the ductility of infill walls and frame structures, and the frame-wall contributions to absorb lateral loads are discussed. In addition, the location and formation of plastic hinges in the beam elements are investigated. Results show that using reduced beam section connection in steel plate shear walls, reduces column sections, improves the structural behavior, and results in infill plates to be more efficient via absorbing larger portions of lateral loads.
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