为了分析型钢混凝土异形柱的耐火极限及火灾后的力学性能,为试验研究做好充分的前期准备,本文采用有限元分析软件ANSYS对型钢混凝土异形柱截面温度场进行数值模拟,得出了柱截面在不均匀受火情况下的温度场分布规律。结果表明,在两面受火的情况下,L形柱的凹角处的温升低于其它部位;由于型钢的存在,加快了柱截面内部温度的热传导;距离受火面相同的深度处的混凝土与型钢的温度不同,因此有必要研究损伤差异对承载力和两者粘结滑移造成的影响。 In order to analyze the fire resistance of SRC special-shaped columns and the mechanical properties after fire, sufficient preparatory work is done for the experimental study. In this paper, the finite element analysis software ANSYS is used to simulate the temperature field of SRC special- The distribution of temperature field under uneven fire conditions. The results show that the temperature rise at the concave corner of the L-shaped column is lower than that of other parts under fire on both sides; the heat conduction inside the column section is accelerated due to the presence of the section steel; and the concrete at the same depth Therefore, it is necessary to study the influence of the difference of the damage on the bearing capacity and the bond slip between the two.