performancebased plastic design of moment framesteel plate shear wall as a dual system

Steel plate shear wall (spsw) is an emerging seismic loadresistant system that, compared to other systems, enjoys the advantages of stable ductile behavior, fewer detailing requirements, rapid constructability, and economy. american seismic provisions decree that a spsw should be designed as a moment frame with a web infill plate. specifically, in case of buildings taller than 160 ft, it decrees that a dual system must be used. this paper presents a method of performancebased plastic design (pbpd) to design steel moment framespsw as a dual lateral loadresisting system. pbpd method uses preselected target drift and yield mechanism as its main criteria. for a specified hazard level, the design base shear is calculated based on energy work balance method, employing preselected target drift. plastic design of dual frame system has been performed to meet the preselected yield mechanism. as presented in the paper, design procedure involves solving a system of five equations with five variables to determine the proportion of spsw and moment frame shear, shear wall thickness, and beam/ column sections. it has been considered that a fourstory structure is designed with the proposed method. seismic performance of this dual frame system, designed with the proposed method, is evaluated by nonlinear static and dynamic analysis for both design basis earthquake (dbe) and maximum credible earthquake (mce). result analysis is in accord with the assumptions, satisfying all the performance objectives. pbpd is a direct design method in which no iteration is needed to achieve the performance objectives. determining the proportion of spsw and moment frame shear is an exclusive capability of this procedure.