Techno Press

Steel and Composite Structures   Volume 1, Number 1, March 2001, pages 111-130
Refined plastic hinge analysis of steel frames under fire
S.L. Chan and B.H.M. Chan(Hong Kong)

Abstract     [Full Text]
    This paper presents an effective, reliable and accurate method for prediction of structuralrnbehaviour of steel frames at elevated temperature. The refined plastic hinge method, which has beenrnused successfully in the second-order elasto-plastic analysis of steel frames at ambient conditions, isrnadopted here to allow for time-independent fire effects. In contrast to the existing rigorous finiternelement programs, the present method uses the advanced analysis technique that provides a simplernand reliable means for practical study of the behaviour of steel frames at elevated temperature by arnlimiting stress model. The present method is validated against other test and numerical results.
Key Words
    elastic-plastic analysis; plastic hinge analysis; steel frames; elevated temperature; fire.
Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, Hong Kong

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