混凝土和钢筋抗冲切抗力系数的分析与研究

Analysis and Research of Punching Shear Resistance Coefficient of Concrete and Reinforcement

针对以往计算公式中混凝土和钢筋抗冲切抗力系数取值不太合理,以致计算结果与实际出入较大的情况,提出了计算公式中混凝土和钢筋抗冲切抗力系数的取值应考虑的影响因素及分析方法,通过5块配双钩型抗冲切钢筋混凝土板的试验结果,结合国外过筋冲坏板的试验数据,对混凝土和钢筋抗冲切的抗力系数进行了统计分析,提出了抗冲切承载力计算公式,计算结果与试验结果符合性良好。

As the unreasonability in formula of calculating punching shear esistence coefficient leads the results of calculating fail to agree with the reality,the authors present the affecting factors and analysis method in respect of punching shear resistance coefficient of concrete and reinforcement in calculation formula.Combining with experimental examples and foreign experimental data,the authors calcuiated and analysed the punching shear resistence coefficient of concrete and reinforcement,and introduce the formula for calculating punching shear bearing resistence,the calculation results generally conform to experimental results.