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在以往对钢管混凝土柱耐火极限试验研究和理论分析的基础上,针对在钢管混凝土柱外包防火涂料和在核心混凝土中配置专门考虑抗火的钢筋两种防火设计方法进行了研究,在规范ISO-834或GB9978—88《建筑构件耐火试验方法》规定的标准升温曲线升温作用下,分别提供了两种抗火措施下钢管混凝土柱的实用设计方法,并将公式结果与数值结果和试验结果进行对比,均吻合较好。
Based on the previous experimental study and theoretical analysis of the fire resistance of concrete filled steel tubular columns, two fire protection design methods were proposed, including fire-resistant coatings on concrete filled steel tubular columns and steel bars specially designed for fire resistance in core concrete. 834 or GB9978-88 “Standard Test Method for Fire Resistance of Building Components”, two practical methods for designing concrete-filled steel tubular columns under fire-resistant measures are provided respectively. The formulas are compared with the numerical and experimental results , Are in good agreement.