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主要对比中国规范(GB 50010—2010)、欧洲规范(EN 1992-1-1:2004)和美国规范(ACI 318-08)中关于钢筋混凝土板受冲切承载力的规定,并通过算例和试验数据对比分析了混凝土强度、荷载面积形状与尺寸、纵筋配筋率、抗冲切钢筋布置对各国规范冲切承载力的影响。根据国内外423个钢筋混凝土板对称冲切试验结果,对各国规范冲切承载力计算值与试验值进行对比,由于欧洲规范考虑纵筋配筋率对承载力的影响,计算结果较为合理且数值最高,中国则最低。
The main contents of this paper are compared with those of the Chinese standard (GB 50010-2010), the European standard (EN 1992-1-1: 2004) and the American standard (ACI 318-08) about the punching capacity of reinforced concrete slabs. Test data contrasting the influence of concrete strength, load area shape and size, longitudinal reinforcement ratio and punching shear reinforcement on the standard punching bearing capacity of various countries. According to the results of symmetrical blanking test of 423 reinforced concrete slabs both at home and abroad, the calculated values and the test values of the standard blanking capacity of all countries are compared. Because the European norms consider the influence of the longitudinal reinforcement ratio on the bearing capacity, the calculation results are reasonable and numerical Highest, while China is the lowest.