摘要
通过长细比Lb为4.5～17.5的6根截面经圆弧化处理、外包FRP后的矩形截面的钢筋混凝土柱的轴心受压试验,研究了长细比对稳定承载力的影响。结果表明:长细比对FRP约束混凝土柱的稳定承载力影响远比螺旋配筋柱和普通钢筋混凝土严重,但当长细比不大于17.5时,其稳定承载力仍比未包裹柱高20%(约束比ξ=0.188)以上。讨论了影响稳定系数φ的因素,给出了稳定系数的参考值,可供工程设计人员参考。
By the axial compression tests of total of 6 reinforced concrete slender columns wrapped with fiber reinforced plastics（the column has elliptical section and slenderness ratio is from 4.5-17.15）, the influence of slenderness on the stable bearing capacity of the column is studied. The results indicate ： slenderness has more influence on the stable bearing capacity of FRP confined concrete column than RC column,when slenderness ratio is less than 17.5,the stable bearing capacity of FRP confined concrete column is still 20% higher than that of the RC column（confined ratio ξ = 0.188）. Some factors that maybe influence stable factor are also discussed. At last, the simplified calculating formulas of stable factor are summarized, which can proyide a reference for engineering designer.
出处
《工业建筑》
CSCD
北大核心
2005年第9期24-28,共5页
Industrial Construction
