Fire Resistance of Web-Slotted Cold-Formed Channel Columns with Non-Uniform Temperature Distributions

Abstract:

The fire resistant behavior of web-slotted cold-formed channel columns with non-uniform temperature distributions was investigated extensively by use of the finite element method in this article. The failure mode of the web-slotted column with non-uniform temperature distributions is very complex with the interaction of the local buckling, the distortional buckling and the global flexural buckling. The ultimate strengths of members with non-uniform temperature distributions are higher than that with uniform temperature distributions of the same highest temperature. In addition the analysis results indicate that the degradation of the material strength makes the dominating factor influencing the fire resistance of cold-formed members. The simplified approach was proposed for the practical design of web-slotted cold-formed columns at high temperatures.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 2313-2318
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.2313
• Online since: August 2013
• Authors: Qi Jie Ma, Pei Jun Wang, Quan Huang
• Keywords: Fire Resistant, Non-Uniform Temperature Distributions, Simplified Design Method, Web-Slotted Lipped Channel

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