Buckling of Steel Columns at Elevated Temperatures

by Charles Culver, (M.ASCE), Disaster Res. Coordinator; Ctr. for Bldg. Tech., Natl. Bureau of Standards, Washington, D.C.,
Vinod Aggarwal, Design Engr.; Reliance Contracting Co., Pittsburgh, PA,
Paul Ossenbruggen, (A.M.ASCE), Asst. Prof. of Civ. Engrg.; Northeastern Univ., Boston, MA,

Serial Information: Journal of the Structural Division, 1973, Vol. 99, Issue 4, Pg. 715-726

Document Type: Journal Paper


The buckling loads for pin-ended steel columns subjected to a uniform temperature increase along the length of the member are determined. The column cross sections investigated include: rolled wide flange shapes, welded I-sections, and welded box sections. The effects of residual stress and the influence of temperature on the material properties on the buckling strength in both the elastic and inelastic range are considered. Results are presented in the form of column curves and simple formulas relating the column strength at elevated temperature to that at room temperature. Comparisons of the results obtained in the study with current design provisions are also made.

Subject Headings: Steel columns | Buckling | Temperature effects | Welding | Structural strength | Comparative studies | Thermal loads | Load factors

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