（1 河南城建学院土木与交通工程学院， 平顶山 467000； 2 湖南大学土木工程学院， 长沙 410082）

［摘要］以国内外既有方形中柱节点试验数据作为评估样本，对比分析国内外设计规范关于板柱节点抗冲切承载力计算和规定的差异。基于对样本的回归分析，提出形式简单的无腹筋板冲切承载力建议计算公式，结果表明，预测值与样本吻合较好。最后提出了无腹筋板柱节点抗冲切承载力的建议计算公式，为我国相关规范的编写提供参考。

［关键词］板柱节点； 冲切承载力； 配筋率； 回归分析

中图分类号：TU375-2文献标识码：A文章编号：1002-848X(2019)13-0120-04

Calculation and study on punching bearing capacity of slab-column joints without shear reinforcement

Zhao Jin1,2, Yi Weijian2

(1 School of Civil and Transportation Engineering, Henan University of Urban Construction, Pingdingshan 467000, China; 2 College of Civil Engineering, Hunan University, Changsha 410082, China)

Abstract:The test data of the square pillars at home and abroad were taken as the evaluation samples, and the differences between the domestic and foreign design specifications on punching bearing capacity of the slab-column joints were compared and analyzed. Based on the regression analysis of the sample, a formula for calculating the punching  bearing capacity of slab without shear reinforcement was proposed. The results show that the predicted value agrees well with the sample. Finally, the proposed calculation formula for the punching  bearing capacity of slab-column joints without shear reinforcement was proposed, which provides a reference for the preparation of relevant specifications in China.

Keywords:slab-column connection; punching bearing capacity; reinforcement ratio; regression analysis