研究了弹性结点有限元方法，详细导出了弹性结点杆件的单元刚度矩阵和常见荷载列阵。
This paper introduces a finite element method of the plane trusses with elastic node. The element stiffness matrix and loading matrix are calculated in detail.
阐明了单元刚度矩阵以及在上层梁单元作用竖向集中荷载或分布荷载下单元节点荷载列阵的形成。
The formulation for element stiffness matrixs, and vectors of nodal of element with the upper beam element subjected to either vertical concentrated load or distributed loads is illustrated.
引入偏心空间薄壁梁单元及空间组合索单元，导出弹性刚度阵、几何刚度阵、质量阵。拉索张力随垂度变化的非线性由等效几何刚度计入。
Having introduced the eccentric space thin-walled girder and the space combined cable elements, the author has derived element elastic stiffness matrix, geometric stiffness and masse matrix.
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