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对4榀单层单跨的圆形钢管混凝土柱-钢筋混凝土梁带楼板组合框架在火灾下的温度场进行试验,研究组合框架中的钢管混凝土柱和钢筋混凝土梁温度场分布的特点,并对比不同防火涂料厚度、不同梁高等情况下的温度-受火时间关系曲线。最后采用有限元方法计算了组合框架的温度场,结果表明,计算结果和试验结果总体上较为吻合。
The temperature field of 4 × 1 single-span single-span circular CFST-reinforced concrete beam-slab composite frame under fire was tested to study the characteristics of temperature field distribution of CFST columns and RC beams in the composite frame Different thickness of fire-retardant paint, different beams under higher temperature - by fire time curve. Finally, the finite element method is used to calculate the temperature field of the composite frame. The results show that the calculated results are in good agreement with the experimental results.