FRP管混凝土组合结构试验研究

被引:22
作者
李杰
薛元德
机构
[1] 同济大学
关键词
FRP管混凝土; 弯曲; 轴压; 偏压; 混杂铺层; 延性;
D O I
暂无
中图分类号
TU398.9 [];
学科分类号
摘要
通过 14根FRP管混凝土构件弯曲、轴压、偏压试验 ,得到了不同受力状况下的荷载 -挠度、弯矩 -曲率曲线以及应力 应变曲线。试验结果表明 ,经过环向、± 4 5°和纵向混杂铺层设计的FRP管混凝土能有效地提高构件的承载力 ,构件具有很大的变形能力 ;FRP壳体不仅能参与承载 ,而且能有效地约束核心混凝土的变形 ,显著提高混凝土强度和延性 ;± 4 5°铺层设计不仅提高构件的抗弯承载力 ,而且大大提高了斜截面承载力 ;弯矩 曲率曲线为二折线 ,第一刚度由混凝土截面控制 ,第二刚度由FRP管刚度控制。
引用
收藏
页码:7 / 9+30 +30
页数:4
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