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Steel and Composite Structures
  Volume 5, Number 5, October 2005 , pages 407-420

Performance of cold-formed steel wall frames under compression
Chi-Ling Pan and Jui-Lin Peng

    This study presents the strength of braced and unbraced cold-formed steel wall frames consisting of several wall studs acting as columns, top and bottom tracks, and bracing members. The strength and the buckling mode of steel wall frames were found to be different due to the change of bracing type. In addition, the spacing of wall studs is a crucial factor to the strength of steel wall frames. The comparisons were made between the test results and the predictions computed based on AISI Code. The related specifications do not clearly provides the effective length factors for the member of cold-formed steel frame under compression. This paper proposes effective length factors for the steel wall frames based on the test results. A theoretical model is also derived to obtain the modulus of elastic support provided by the bracing at mid-height of steel wall frames in this research.
Key Words
    cold-formed steel; wall frame; channel bridging; strap bracing; effective length factor.
Chi-Ling Pan; Department of Construction Engineering, Chaoyang University of Technology, 168, Gifeng E. Rd., Wufeng, Taichung County, Taiwan, R.O.C.rnJui-Lin Peng; Department of Construction Engineering, National Yunlin University of Science & Technology, 123, Section 3, University Road, Touliu, Yunlin, Taiwan, R.O.C.

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