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对2个节点处承受垂直偏心荷载的不完全弹性支承框架进行非线性静力分析。其中,柱截面可变,梁截面一定。结合其他几何参数(柱与梁的长度和转动惯量的比值)以及加载参数(加载偏心距)对柱截面的变化率进行了广泛的研究。通过框架节点处的弹簧来模拟框架水平刚度的简化程序进行研究发现,梁中轴力的发展可以忽略不计(精确解的误差微乎其微)。同时,采用非线性有限元分析对该结果也进行了验证。
Nonlinear static analysis of an incompletely elastic supporting frame subjected to vertical eccentric load at 2 nodes. Among them, the column cross section is variable, the beam cross section is certain. The rate of change of column section has been extensively studied in combination with other geometric parameters (the ratio of column to beam length and moment of inertia) and loading parameters (loading eccentricity). The simplified procedure for simulating the horizontal stiffness of the frame through springs at the frame nodes was studied and found that the development of axial forces in the beam is negligible (the accuracy of the solution is negligible). At the same time, the results were verified by nonlinear finite element analysis.