赵艳静  陈云霞 王玲勇
        (天津大学土木系  300072)

[提要]  根据钢筋砼双向压弯柱的工作机理，提出了用全过程非线性分析来研究双向压弯柱截面延性的方法，并编制了相应的计算机程序。通过对733根L形柱、733根T形柱和243根方形柱电算结果的分析，总结了L形\T形、方形截面双向压弯柱的截面延性规律，提出了这三种截面双向压弯柱的截面延性计算公式，并在此基础上，对轴压比、箍筋间距等一系列构造要求提出了设计建议。
[关键词]  异形截面柱 双向压弯 非线性分析 轴压比 荷载角 配筋

A method for the nonlinear analysis of complete response process for ductility of R.C. columns subjected to biaxially eccentric loading is presented. According to analytical results of 733 sets of  L-shaped columns, 733 sets of T-shaped columns and 243 sets of square columns, the ductile behavior of R.C.L-shaped, T-shaped and square columns are mvestigated. The calculation formulas for ductilit,y analysis of R.C. columns with three kinds of  sections are  suggested. On the basis of  analysis, a number of design suggestions related to axial compression ratio and the spacing of stirrup are also proposed.
Keywords: R.C.columns; L(T)-shaped sections; biaxially eccentric loading; nonlinear analysis; com
pression ratio; loading angles; curvature ductility rati。