Abstract
Cold-formed steel framed shear wall sheathed with corrugated steel sheets is a promising shear wall system for low- and mid-rise constructions at high wind and seismic zones due to its advantages of non-combustibility, high shear strength, and high shear stiffness. However, recent research showed that the shear walls using corrugated steel sheathing had brittle failure behaviors. This paper presents an experimental study aimed at improving the ductility of cold-formed steel shear walls by introducing openings and optimizing the configurations in the corrugated steel sheathing. A total of 11 sheathing configurations were investigated and 19 monotonic and cyclic full-scale shear wall tests were included in this project. The research discovered that with proper opening in the corrugated steel sheathing, the shear wall can yield significantly improved ductility while maintaining high-level shear strength and stiffness. Additionally, nonlinear dynamic analyses were also carried out to verify the advantages of the proposed innovative shear wall. The dynamic analyses show that the new shear wall system can greatly reduce the seismic effects and decrease the collapse probability of cold-formed steel buildings.
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