摘要
为了能够更准确地计算板柱节点的抗冲切承载力,本文在弯剪临界裂缝方法的基础上,针对第一条弯曲裂缝起点位置的确定和钢筋销栓作用考虑方法两个关键问题,对弯剪临界裂缝方法进行了修正,并在此基础上考虑了抗冲切钢筋的作用,提出了配有抗冲切钢筋的板柱节点弯剪临界裂缝方法。根据47个试验构件数据,对比分析了中国规范GB50010-2010、美国规范ACI318-14、英国规范BS8110-97、欧洲规范CEB-FIP MC2010,以及本文修正后的弯剪临界裂缝方法的计算结果,发现本文修正后的弯剪临界裂缝方法计算效果最好。
In order to calculate the punching bearing capacity of slab-column connections more accurately,this paper modified the bending-shearing critical crack method and took the dowel action into account based on the method which consider both the location of the first crack and the function of the rebar, and provided the method of considering the shear reinforcement for slab-column connections with transverse reinforcement. Detailed comparative analysis has been conducted among the results of 47 components based on the GB 50010-2010( China), ACI318-14( America), BS 8110-97( Britain), and CEB-FIP MC2010( Europe) and the improved bending-shearing critical crack method, respectively. The results show that the analysis model presented in this paper can calculate the punching capacity of the connections more accurately.
引文
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