钢筋砼板柱结点冲剪强度计算  

Strength of Reinforced Concrete Slab-Column Connections without Shear Reinforcement

作　　者：曹宏杰 W.H.Dilger 

机构地区：[1]南京建工学院 [2]加拿大卡尔加里大学

出　　处：《建筑结构学报》1990年第1期30-40,共11页Journal of Building Structures

摘　　要：本文回顾了前人的钢筋砼板柱结点冲剪试验结果,分析了其所显示的裂缝开展过程和破坏形式。以这些分析为基础,分别对高、低配筋率的板柱节点,用屈服线和板梁模型,推导出中柱结点的强度计算公式。计算结果与试验对比,符合较好,并能解释各种试验中所观测到的强度影响因素。The results of previous tests on the slab-column connections subjected to punching shear force are reviewed. Based on the failure mechanism observed in previous tests, which include the cracking patterns and the cracking procedures, a failure criterion for interior connections under balanced loading is developed. For specimens with low reinforcement ratios, the failure criterion is derived by yield-line theories, and for the specimens with high reinforcement ratios, it can be derived by the beam-analogy method. The criterion thus derived can explain almost all of the affecting factors to the punching shear strength of the connections as observed in the previous tests.

关 键 词：钢筋混凝土 板 柱 结点 冲剪 

分 类 号：TU375.201[建筑科学—结构工程]