摘要
以偏心率、加固量和粘贴形式为变化参数,共进行18个圆形截面钢筋混凝土柱试验,其中15个试件包裹了纤维布,另外3个未包裹纤维布。试验结果表明:由于玄武岩纤维布(BFRP)的作用,包裹BFRP试件较对比试件的承载力有很大提高,同时延性也有不同程度的提高,证明了BFRP约束对提高钢筋混凝土柱的力学性能的有效性。最后,提供了环向包裹FRP后圆形截面钢筋混凝土柱承载力计算方法,计算结果和试验结果基本吻合。
A total of thirty specimens were tested to investigate the performance of eccentrically loaded circular reinforced concrete columns strengthened by wrapping Basalt Fiber reinforced polymer （BFRP）sheets.These eighteen columns included three unstrengthened columns and fifteen columns strengthened with BFRP jackets.The main parameters varied in the tests were the eccentric ratio FRP strengthening ratio,Stirrup spacing, the sectional dimensions.The load-carrying capacity of the test specimens were found to be greatly improved as a result of FRP wrapping and ductility improvements to diferent degrees were also observed demonstrating the effectiveness of FRP confinement.A simple method was given to predict the load-carrying capacity of FRP-confined RC columns.In general, the predicted results agree well with the column test results.
出处
《混凝土》
CAS
CSCD
北大核心
2009年第12期17-20,25,共5页
Concrete
基金
国家科技攻关(国际合作)项目(2005DFBA2002)
关键词
玄武岩纤维布
偏心荷载
承载力
钢筋混凝土圆柱
basalt fiber（BFRP）
eccentric loading
load-carrying capacity
circular concrete column
