Nonlinear finite element analysis for 3d-frames with special-section columns is presented considering the frame features such as irregular cross-section of the columns.
针对空间异形柱框架具有柱横截面不规则等特点，提出适用于该结构非线性有限元分析的方法。
In this paper, the stiffness matrix and the loading transfer matrix of frame element with turn elastic connections is deduced, the cross shear effect has been taken into consideration simultaneously.
作者推导了具有转动弹性连接的杆单元刚度矩阵和荷载转移矩阵，其中考虑了横向剪切效应。通常的两端铰接、两端刚接或一端铰接、一端刚接的杆元刚度矩阵只是作者所推导的刚度阵的一些特例。
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