混凝土圆柱支承板的受冲切承载力计算

Calculation of punching shear capacity for reinforced concrete slab-circular column

基于我国《混凝土结构设计规范》(GB50010—2002)中矩形柱支承板受冲切承载力计算表达式,采用将圆柱截面等效为方柱截面的方法,提出圆柱支承板受冲切等效设计剪力的近似计算公式,推导出等效设计剪力系数,该系数与欧洲规范EN1992-1-1:2004给出的系数接近,最后给出了圆柱支承楼盖受冲切承载力的计算算例。

Based on calculation of punching shear capacity for slab-rectangular column connections in Code for design of concrete structures（GB50010—2002）,approximation methods of calculating equivalent designed shear force for slab-circular column connections were given by ways that circular column was equivalent to square column.The factors of equivalent designed shear force were derived and,these factors are approach to the factors given in EN1992-1-1：2004.Finally,an example for using proposed factors to check punching shear capacity of slab-circular column connections was given.