钢梁-柱两杆端变形增量的相关方程(续)

The Correlation Equation of Two-End Deformational Additions of Steel Beam-Columns(II)

本文在文[2]的基础上,继续讨论了弹塑性梁-柱当轴向压力N发生改变时杆端变形增量的相关关系。文中导出了轴力增量ΔN引起的杆端变形的增量关系式,与文[2]巳建立的杆端变形增量相关方程合并,得到了弹塑性梁-柱在纵向力系、横向力系同时改变时两杆端变形增量与纵、横力系增量的相互关系式,从而使框架结构的计算能以每根梁-柱为独立单元,按逆算单元法计算出结构的承载能力。

This paper makes an analysis for the correlation of two-end deformational additions of elastic-plastic steel beam-columns when axial load is changed, establishes interaction equations of two-end deformational additions of beam-columns with additions of transverse loads and axial loads, and makes it possible for the inverse calculation segment length method to be used to calculate the ultimate strengths of frames