高强箍筋约束混凝土轴心受压力学性能研究  

Study on mechanical behavior of high strength stirrup confined concrete under axial compression

作　　者：沈宏新 张旭 魏海 蒋永佳 黄伟[3] Shen Hongxin;Zhang Xu;Wei Hai;Jiang Yongjia;Huang Wei(Kunshan Water Engineering Construction Management Ofice,Suzhou 215300,China;Jiangsu Taihu Planning And Design Institute,Suzhou 215128,China;Anhui University of Technology,Ma'anshan243032,China)

机构地区：[1]昆山市水务工程建设管理处,江苏苏州215300 [2]江苏省太湖水利规划设计研究院有限公司,江苏苏州215128 [3]安徽工业大学,安徽马鞍山243032

出　　处：《建筑科学》2024年第5期151-159,共9页Building Science

摘　　要：为了得到高强箍筋约束混凝土峰值参数,本文以约束效应系数为分析变量,基于过-王混凝土五参数破坏准则建立了约束混凝土峰值应力计算公式,并依据有效侧向约束应力与箍筋应变关系式推导了约束混凝土峰值应力时箍筋应力的计算公式,相关公式计算值与文献试验值吻合较好。最后进行了算例验证,结果表明本文方法可行,可应用于箍筋约束混凝土峰值应力、应变的理论计算。In order to get the peak parameters of confined concrete by high-strength stirrup,the confinement effect index is selected as the analysis variables in this paper.The confined concrete peak stress calculation formula is established based on Guo-Wang concrete five parameter failure criterion,and the calculation formula of stirrup stress at confined concrete peak stress is derived according to the relational expression of the effective lateral restraint and stirrup strain.The relevant formula calculated values are in good agreement with the experimental values.Finally,a numerical example is given to show that the method is feasible,which can be applied in the theoretical calculation of the peak stress,strain of the confined concrete by stirrup in the paper.

关 键 词：约束混凝土 峰值参数 箍筋应力 

分 类 号：TU375.3[建筑科学—结构工程]