Fire-resistance performance of high-strength-steel H shaped columns under the axial compression |
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| Authors: | WANG Wei-Yong LI Guo-Qiang and DAI Guo-Xin |
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| Institution: | College of Civil Engineering,Chongqing University,Chongqing 400045,P.R.China;College of Civil Engineering,Tongji University,Shanghai 200092,P.R.China;College of Civil Engineering,Chongqing University,Chongqing 400045,P.R.China |
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| Abstract: | In order to investigate the fire-resistance performance of high-strength-steel column,this paper deduces the critical stress of high-strength-steel columns under the axial compression at high temperature by introducing the mechanical properties of high-strength-steel at high temperature.Moreover,coefficients of overall stability and critical temperature for high-strength-steel column under the axial compression are obtained which can provide a reference for design.The comparison of overall stability coefficient and critical temperature between high-strength-steel and normal steel is made.The results show that the overall stability coefficient and critical temperature for normal steel is not applicable for high-strength-steel,and the overall stability coefficient for high-strength-steel is smaller than that for normal steel.The paper uses the finite element analysis to validate the overall stability coefficient,and good match was found between them. |
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| Keywords: | high-strength-steel column fire resistance overall stability critical temperature |
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