耐火钢柱的抗火性能参数分析与抗火临界温度估计

本文利用ANSYS有限元分析软件所建立的火灾升温条件下耐火钢柱的非线性有限元分析模型，进行了大量的参数分析，研究各种参数的变化对耐火钢柱抗火临界温度的影响，进而提出耐火钢柱抗火临界温度的简便估计方法。最后通过算例介绍了本文方法的使用。并验证了方法的可靠性。

Parametric Studies and Critical Temperature Estimation of Fire-Resistant Steel Columns

Employing a non-linear FEM model of fire-resistant steel columns at elevated temperatures established with the computer program ANSYS,a large number of parametric studies are carried out.Based on the numerical investigations on the effects of various parameters on the critical temperatures of fire-resistant steel columns subjected to fire,a practical approach is then developed to estimate the critical temperature of fire-resistant steel columns.Finally an example is presented to demonstrate the application of the proposed approach,and the effectiveness of the approach is then verified.