肖建庄  张建荣    （同济大学 上海 200092）

    秦灿灿                  （浦东国际机场 上海 201202）

[提要]  推导并计算了混凝土柱截面在界限破坏条件下的轴压比，讨论了箍筋约束、周边纵向钢筋、“芯筋”和其他因素对柱轴压比限值的有利影响。针对目前高层钢筋混凝土结构抗震设计中遇到的突出问题之一——框架桂轴压比超限现象，提出了一些设计建议。
[关键词]  框架柱 轴压比限值 界限破坏

According to the bound failure condition of the rectangular cross section, the limit value of axial compressive ratio for concrete frame columns is analyzed concerning with the factor of longitudinal reinforcement, composite stirrups and core reinforcement etc.. Finally, some suggestions on the limit values of axial compressive stress ratio for frame columns are recommended.
Keywords:  frame columns;limit values; axial compressive stress ratio; bound failure