钢筋砼柱的轴压比限值

Limit Values of Axial Compression Ratio for Reinforced Concrete Columns

本文从大、小偏心受压构件截面的界限破坏条件出发，导出了对称配筋矩形截面柱和圆形截面柱轴压比限值的计算公式，同时也给出了有箍筋约束的矩形截面柱轴压比限值的计算公式。最后，对钢筋砼柱抗震设计中的柱轴压比限值提出了设计建议。

x Based on the condition of balanced failure for the cross sections of reinforced concrete eccentric compression members, this paper derives the calculation formulas of limit value of axial compression ratio (N/fcA) for symmetrically reinforced concrete columns with rectangular and circular sections. Mean,while the formulas for calculating the limit values of axial compression ratio for columns with rectangular sections Confined by stirrups are also put forward.Finally, some suggestions about the limit values of axial compression ratio are given for earthquake resistant design of reinforced columns.