中空夹层圆钢管混凝土柱有着优良的性能,常用于发射塔结构,并可用于结构柱和桥墩。中空圆钢管混凝土柱在正常温度下的性能研究已很广泛,但其耐火性能仍是重点。进行多组耐火试验,并简要介绍结果。建立有限元模型,分析中空圆钢管混凝土柱的耐火性能,即火灾下的结构热分析。 Hollow-walled CFST columns have excellent properties and are commonly used in tower structures and can be used for structural columns and piers. The research on the properties of CFST columns at normal temperature has been extensive, but the fire resistance is still the key point. Conduct multiple fire tests and briefly describe the results. The finite element model is established to analyze the fire resistance of the CFST column, which is the structural thermal analysis under fire.