钢筋混凝土构件基于修正压力场理论的受剪承载力计算  

SHEAR STRENGTH OF REINFORCED CONCRETE MEMBERS BASED ON MODIFIED COMPRESSION FIELD THEORY

作　　者：魏巍巍[1] 贡金鑫[1] 

机构地区：[1]大连理工大学土木水利学院结构工程研究所,辽宁大连116024

出　　处：《工程力学》2011年第2期111-117,共7页Engineering Mechanics

基　　金："十一五"国家科技支撑计划项目(2006BAJ01B06-06);国家自然科学基金项目(50778034)

摘　　要：在经典修正压力场理论的基础上做了进一步的研究,根据钢筋混凝土受弯构件的剪切破坏机理,考虑上部受压区混凝土和下部受拉区骨料咬合力及箍筋共同提供受剪承载力,推导出截面的受剪承载力表达式。与所收集的国内外有腹筋梁的275个试验结果的比较表明,采用该文提出的受剪承载力表达式计算的受剪承载力与试验结果的变异性较小,可用于钢筋混凝土梁的抗剪分析和设计。Based on the modified compression field theory,this paper develops an equation to calculate the shear capacity considering the shear contribution of concrete in compression,the shear stress transmitted across crack interface,and the contribution of stirrups based on shear failure mechanism of reinforced concrete members.The proposed equation is verified through a comparison with the experimental results from different sources（275 in total）.It was found that consistency between shear strength calculated using the derived expressions and test data were well.So it is suitable for shear analysis and design of reinforced concrete beams.

关 键 词：钢筋混凝土构件 抗剪强度 修正压力场理论 双轴强度 规范 

分 类 号：TU318[建筑科学—结构工程] TU375