FRP布加固偏心受压钢筋混凝土矩形柱承载力的简化计算方法  

Simplified calculation method for the capacity of eccentrically compression concrete short rectangular columns strengthened with FRP sheets

作　　者：杨威 王文炜[2] 

机构地区：[1]河南省交通规划勘察设计院有限责任公司,河南郑州450052 [2]东南大学桥梁与隧道工程系,江苏南京210096

出　　处：《四川建筑科学研究》2010年第6期65-69,共5页Sichuan Building Science

基　　金：东南大学国家自然科学基金预研基金项目(XJ2008329);城乡建设部研究开发项目(2008-K4-16)

摘　　要：在已有的FRP约束混凝土矩形截面短柱的三阶段应力—应变关系基础上,给出了等效矩形应力图形系数β和γ的简化计算公式。根据截面力的平衡条件使用系数β和γ建立了FRP布加固钢筋混凝土矩形截面偏心受压柱承载力的简化计算方法,并与相关文献中的试验结果进行了对比。计算结果表明,用本文提出的承载力简化计算方法计算的承载力数值与试验值吻合较好,可供设计和施工参考。The simplified calculation formula for equivalent rectangular stress block coefficients is proposed based on the existing three-stage stress-strain relationship of FRP-confined concrete short rectangular column.By using the equivalent rectangular stress block coefficients,the simplified calculation method for the capacity of eccentrically compression concrete short rectangular columns strengthened with FRP sheets is deduced from equilibrium equations.Compared with the experiment results of related literatures,the formula calculated values are in agreement with the experimental ones basically.The results confirm the feasibility of the simplified calculation method and it can be referenced by the designers.

关 键 词：纤维增强材料 钢筋混凝土柱 加固 偏心受压 承载力 

分 类 号：TU375.3[建筑科学—结构工程]