东南大学学报（自然科学版）2024，Vol.54Issue(2)：368-378,11.DOI:10.3969/j.issn.1001-0505.2024.02.014
配置抗冲切钢筋的RC板柱节点受冲切承载力计算
Calculation of punching shear capacity of RC slab-column connections with shear reinforcement
摘要
Abstract
To calculate the punching shear capacity of reinforced concrete(RC)slab-column connections equipped with commonly used shear reinforcement(e.g.stirrups and bolts),a shear strength calculation method for RC slab-column connections reinforced with shear reinforcement is proposed by combining the di-agonal-tension failure mechanism of beams and the modified compression-field theory(MCFT).First,the calculation formula for the critical inclined crack angle of RC slab-column connections equipped with shear re-inforcement is derived based on the MCFT.Then,assuming that the shear reinforcement within the perimeter of the critical section reaches the yield strength during punching failure,the critical inclined crack angle is sub-stituted into MCFT to derive the calculation method for the punching shear capacity of the slab-column connec-tions.Finally,the punching shear capacity for 62 RC slab-column connections equipped with shear reinforce-ment is calculated using the method and the American code(ACI 318-19)approach,and the influences of concrete strength,effective plate thickness,column section length,bending reinforcement ratio,and shear re-inforcement ratio on the punching shear capacity of these connections are analyzed.The results show that the calculated punching shear capacity derived from MCFT aligns well with experimental values,with an average coefficient of 0.96 and a variation of 0.20.The punching shear capacity of connections exhibits a non-linear positive correlation with the influencing factors mentioned above.The method can be used to calculate the punching shear capacity of RC slab-column connections with shear reinforcement.关键词
板柱节点/冲切承载力/修正压力场理论/临界斜裂缝倾角/冲切配筋率Key words
slab-column connection/punching shear capacity/modified compression-field theory(MCFT)/critical inclined crack angle/punching shear reinforcement ratio分类
建筑与水利引用本文复制引用
夏成亮,史庆轩,赵元浩..配置抗冲切钢筋的RC板柱节点受冲切承载力计算[J].东南大学学报（自然科学版）,2024,54(2):368-378,11.基金项目
国家自然科学基金资助项目(51878540). （51878540）
