Seismic Performance Evaluation of Cold-Formed Steel Framed Shear Walls using In-Frame Corrugated Steel Sheets

This paper presents experiments and finite element analysis of an innovative cold-formed steel framed shear wall with corrugated steel sheathing. The novel shear wall is high strength, non-combustible, and is equal in width with adjacent walls. Full-scale monotonic and cyclic tests were conducted on bearing walls and shear walls under combined lateral and gravity loading. The strength of the novel shear wall is higher than currently code certified shear walls in AISI S400-15 so that it could be employed for mid-rise buildings in areas that are prone to high seismic and wind loads. It was also found that the shear strength of bearing wall was approximately one third of the shear strength of shear wall, which proves that bearing walls provide significant shear resistance in a structure. In finite element analysis, shear wall models were first simulated and verified in OpenSees software, then nonlinear static and dynamic analysis were performed in OpenSees software according to the methodology recommended by FEMA P695. The objective of numerical analysis was to evaluate and quantify seismic performance factors of this new lateral force resisting system. The seismic performance evaluation results verified that the existing seismic performance factors for conventional light framed shear wall systems were appropriate for the novel cold-formed steel shear wall systems.

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