梁条单元的构造及框筒角柱内力的计算

Construction of Beam-strip Element and Computation of Internal Forces in Corner Columns of Frame-tube Structures

本文根据角柱在框筒结构中的特殊作用构造了梁条单元，推导了梁条的单元刚度矩阵和角柱内力的计算公式，并将这些改进应用在框筒的平面应力有限条法中，获得了令人满意的角柱主要内力计算结果。

In this paper, a beam-strip element is constructed according to the special action of corner column demonstrated in frame-tube structure with its stiffness matrix and the formulas for calcu - lating the internal forces of corner column derived . These improvements are applied to a 2D-stress finite strip program to analyze frame - tube structures, and the primary internal forces of corner columns obtained are of high accuracy .