Innovative Corrugated Steel Shear Walls for Multi-Story Residential Buildings

Abstract eng:
An alternative lateral bracing system for lightly-framed multi-story residential buildings is needed because the customary wood systems in the US cannot be economically designed for height exceeding four stories. A new system comprising corrugated sheet steel shear walls and cold-formed steel stud framing is proposed herein. The key element of this structural system is the corrugated sheet steel shear wall: the lateral load resistance of this structural element originates with the shear strength of the corrugated sheet steel and the shear resistance of the screws connecting the sheeting to the cold-formed steel framing. To establish a design basis, a total of 44 cyclic racking tests were conducted to establish the relation between corrugated sheet steel shear wall design parameters, such as gauge of the sheet steel, gauge of the cold-formed steel framing, size and spacing of the fasteners, and the shear strength of the wall. The results of these tests are presented. Furthermore, system-level R, Cd and Ω o values consistent with the test results are proposed for adoption into design codes. Finally, a design table listing the nominal shear strength values for corrugated sheet steel shear walls is provided. The primary users of the system would be practicing engineers who design light-framed cold-formed steel buildings.

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