外包角钢与CFRP复合加固中长柱承载力分析  

Analysis of bearing capacity calculation of axially compressed slender RC columns strengthened with combination of CFRP and angle steel

作　　者：卢亦焱[1] 欧添雁[1] 赵国藩[2] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]大连理工大学土木工程系,辽宁大连116024

出　　处：《大连理工大学学报》2006年第3期380-384,共5页Journal of Dalian University of Technology

基　　金：湖北省重点科学技术发展计划资助项目(2000192104);中国博士后科学基金资助项目(2002031147)

摘　　要：通过9根外包角钢与碳纤维布复合加固钢筋混凝土中长柱的轴心受压试验,研究了复合加固中长柱的破坏特征和受力性能,提出了合理的约束模型和核心混凝土的本构关系.在试验研究的基础上,结合折算模量理论,建立了外包角钢与碳纤维布复合加固钢筋混凝土中长柱的折算模量计算方法,并推导了复合加固中长柱的非弹性屈曲临界承载力计算公式,公式中考虑了柱长细比、碳纤维布量、缀板量和角钢量等因素的影响,同时编制了承载力的电算程序,其计算结果与试验结果吻合较好,可为实际工程应用提供参考.Based on the experimental research on nine axially compressed slender RC columns strengthened with the combination of carbon fiber reinforced plastic （CFRP） and angle steel, the failure types and the performing characteristics of the strengthened columns were analyzed, and the rational confined model and the constitutive relationships of the central concrete were provided. Based on the experimental research and the reduced modulus theory, the reduced modulus formula of the strengthened RC columns was established. Considering the influence of slenderness ratio, quantity of CFRP, angle steel and batten plate, the critical bearing capacity calculation of inelastic flexion of the strengthened RC columns was provided and the computation program of bearing capacity was generated. The calculation results are consistent with the experimental ones. It can provide a reference for engineering application.

关 键 词：角钢 碳纤维布 中长柱 复合加固 折算模量理论 

分 类 号：TU375.3[建筑科学—结构工程]