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Axial strength of gypsum-sheathed cold-formed steel wall studs

  • Structural Engineering
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Abstract

The composite panel of this study consists of two C-section steel wall studs with gypsum wallboard attached to both flanges of the stud with screws at regular intervals. It is assumed that an axial load is applied to the centroid of the gross cross section for each stud. The bracing from the wallboard connected by screws is represented by elastic springs in the analysis. The panel is subject to both flexural buckling and torsional-flexural buckling. Using the differential equation of equilibrium and an energy method, the flexural and torsional-flexural buckling loads are evaluated. Equations to determine the buckling loads are developed considering typical end-conditions. Local buckling effects and nominal buckling stress are determined according to 1986 and 1996 AISI specifications. Predictions and observed strengths from the limited experimental database were in good agreement. The predictions accurately represent the overall torsional-flexural buckling failure for the gypsum board-braced steel wall studs and its independence of stud spacing.

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Authors and Affiliations

  1. School of Civil and Environmental Engineering, Kook-Min University, Seoul, Korea

    Young-Ki Lee (Lecturer)

  2. Civil, Construction and Environmental Engineering, Oregon State University, Oregon, USA

    T. H. Miller (Associate Professor)

Authors
  1. Young-Ki Lee
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  2. T. H. Miller
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Correspondence to Young-Ki Lee.

Additional information

The manuscript for this paper was submitted for review on June 22, 2000.

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Lee, YK., Miller, T.H. Axial strength of gypsum-sheathed cold-formed steel wall studs. KSCE J Civ Eng 4, 175–181 (2000). https://doi.org/10.1007/BF02823964

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  • DOI: https://doi.org/10.1007/BF02823964

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