【摘要】 对带缺陷半刚性连接门式钢架进行了弹塑性大变形有限元分析。分析考虑了半刚性柱脚连接、几何缺陷等的影响,采用精炼塑性铰法分析截面塑性,通过特征屈曲分析考虑轴力和初始几何缺陷对门式钢架受力性能的影响。更多还原

【Abstract】 A robust finite element procedure for large deflection and inelastic analysis of imperfect steel frames with semirigid base is proposed and the nonlinear behavior of sem-irigid frames with various initial imperfections are studied.The refined plastic hinge method is used for modeling of the section plastification and both the notional force and the initially imperfect geometry of the frames obtained by an eigenvalue buckling analysis are used for modeling the geometrical imperfections.更多还原