考虑柱间相互作用的无侧移柱计算长度系数求解

Effective-length Factor Calculation of Non-sideway Columns in Consideration of Their Interaction

轴压力作用下,上下邻接柱子相互牵制,最终共同失稳。从新角度出发,将邻接柱子与梁一起视为约束构件,提出无侧移框架柱子计算长度系数的求解方法,该方法充分考虑轴压力对约束构件的影响以及柱子之间的相互作用。通过算例计算,较之《钢结构设计规范》的提供方法,计算精度更好,可供工程设计参考和使用。

Under the axial pressure,the adjacent columns up and down would interact each other,buckling together finally.In a new way,the paper regards the adjacent columns as the restricting members like beams,promoting the method for the effective-length factor of columns with no displacements.The method has considered enough the affect on restriction member by the axial pressure and the interaction between columns.Through the examples,it is shown that the results from the method in the paper have better precision than that in the Code,which is easy to be applied or reference in engineering.