该文结合两个实例，以三维平面应力简图，使用SAPS程序，对井塔塔身箱体做了静、动力有限元分析。详细列出了单元划分、节点约束、材料特性、荷载及质量情况，给出了计算所得的应力、位移及周期数据，通过定量分析比较，评述了整截面悬臂梁法存在的问题。 Combining two examples, the static and dynamic finite element analysis of the well tower body box was performed using the three-dimensional plane stress diagram and the SAPS program. The unit division, node constraints, material properties, load and quality conditions are listed in detail. The calculated stress, displacement and cycle data are given. Through quantitative analysis and comparison, the problems of the whole section cantilever beam method are reviewed.