IMPROVING STEEL PLATE SHEAR WALL CODE DESIGN METHODOLOGY
Current code based design of steel plate shear wall (SPSW) systems does not take into account the lateral force resistance provided by the moment resisting frame which bounds the web-plate. The steel web-plate portion of the SPSW system must be designed for 100% of the lateral loads. Although this is a simple assumption for practical design purposes, it also could lead to overly conservative design. It is anticipated that there is an optimal participation percentage provided by the SPSW’s surrounding frame elements. Current design methodology neglects the surrounding frame’s contribution but allowing designers to take into account this contribution would economize the SPSW system making it a more attractive lateral force resisting system (LFRS). This thesis focuses on design of three separate 9-story prototypes based on 100%, 85%, and 65% web-plate shear participation assumption. OpenSees will be used to analyze the frame and web-plate lateral force resistance participation. Forty-four far field ground motions were selected to determine the building response for each prototype. Participation results are used to compare performances of generic code designed SPSW systems with those of SPSW systems with frame to web-plate shear distributions.
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