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根据火灾后偏心受压型钢混凝土(SRC)中长柱的试验结果,对经历火灾全过程的偏心受压SRC柱偏心距增大系数进行了研究。在理论分析的基础上,以极限曲率为参数,推导了考虑高温作用影响的火灾后偏心受压型钢混凝土长柱偏心距增大系数的计算公式,基于已有试验结果,对计算结果与试验结果进行比较分析。结果表明,建议的公式计算结果与试验结果吻合较好且便于计算,可为工程设计提供参考。
According to the test results of long column of post-fire SRC columns, the coefficient of eccentricity increase of eccentric pressure SRC column undergoing the whole fire process was studied. Based on the theoretical analysis, the formula for calculating the coefficient of increase of the eccentricity of long columns of post-fire eccentrically loaded steel columns considering the effect of high temperature is deduced based on the limit curvature. Based on the existing experimental results, the calculation results and experimental results For comparative analysis. The results show that the proposed formula is in good agreement with the experimental results and is easy to calculate, which can provide reference for engineering design.