摘要
钢柱的截面形状对钢柱截面温度分布有一定的影响,而钢柱截面温度的分布情况可能导致钢柱的抗火性能提高或者降低。钢柱在不均匀温度分布情况下,由于温度效应的作用,可使钢柱截面局部屈服或者增加附加挠度。对于四面受火钢柱,腹板翼缘厚度的不同会导致腹板截面温度高于翼缘截面,从而导致钢柱截面应力分布不均匀,对钢柱的抗火性能产生影响。通过ANSYS软件分析研究了钢柱在四面受火情况下截面温度分布对钢柱抗火性能的影响,可供钢结构抗火设计参考。
The distributed temperature was influenced by the cross-section shape of the steel column, and the fire resistance of steel column was effected by the temperature distributing. With the asymmetric distribution of temperature, the local yielding would be produced by the column or the deflection would he added. Because of the difference of the thickness of the web plate and the flange, the distributed temperature to the column with four-faced fire would be asymmetric. By using ANSYS program, the influence to the steel column by the distributed temperature of the cross-section was studied, which provided a reference for the fire-resistant design of steel structures.
出处
《钢结构》
2009年第6期75-79,共5页
Steel Construction
关键词
截面形状
钢柱
抗火性能
cross-section shape
steel column
fire resistance
