石建军  段仲源　（南华大学  衡阳　4210 01）

[提要]  通过4榀叠合框架的足尺实验，研究了二次受力叠合框架梁的力学性能和破坏形态。根据实验结果
分析了顶层角节点受弯钢筋的锚固性能，提出了角节点受弯负筋的锚固构造，供设计人员参考应用。
[关键词]  叠合框架  角节点  受弯钢筋  锚固性能

In order to investigate mechanical characteristics and damage features of the model on sections of two - stage loading composite frame beams,experiments on 4 composite frames were carried out. Based on the experimental results, bond properties of bars subjected to negative moments in composite frame corner joints are analyzed, and anchorage constructions of bars are presented. All anchorage constructions of bars might be referred to practical design.
Keywords:  composite frame; corner joint; bar subjected to negative moments; bond property

    参  考  文  献
1．石建军，黄迎军．叠合框架梁正截面受力性能的实验研究见：现代结构工程技术研究应用与展望，湖南科学技术出版社，2000.
2．混凝土结构设计规范（GB50010-2002）．中国建筑工业出版社，2002．
3．白绍良，傅剑平．末端带直角弯折的梁筋在端节点中的锚固性能试验研究．重庆建筑工程学院学报，1994，16(2)．