[提要]  根据钢框架柱稳定设计的计算长度概念，以部分框架为计算单元，用变刚度的螺旋弹簧模拟梁柱节点连接的柔性，通过引入柔性连接刚度修正系数，建立了无侧移和有侧移柔性连接钢框架柱计算长度系数修正公式，其形式与我国钢结构设计规范( GBJ17-88)规定的计算长度稳定方程完全相同，可供工程设计人员使用。
[关键词]  柔性连接 框架柱 稳定 计算长度

According to the column effective length concept of steel frames stability design,  the modified formulas of column effective length factor in both braced frames and unbraced frames with flexible connection are derived by taking partial frame as an analysis element, usmg a rotation spring which has variable stiffness to model flexibility of beam-column connection and introducing a modified stiffness factor of flexible connection. The form of these formulas for computing effective length factor is exactly the same as that of rigidly connected steel frames which have been well established in Steel Struture Design Specification (GBJ17 - 88)and the formulas can be of some assistance to the engineers in steel frames design.
Keywords: flexible connection; frame column; stability; effective length