本文应用空间二维单元组合的有限元法,对多种筋板布置的机床立柱模型,进行了静刚度的对比计算。首先对所采用的非保续矩形单元验证其收敛性,证明用较粗网格也可比网格较密的常应变三角元得到更高的计算精度。并与模型实测数据进行了对比。然后,应用该单元对不同筋板布置的立柱模型进行了对比计算。初步得到了一些关于筋板布置对立柱抗弯和抗扭刚度影响的看法。 In this paper, the finite element method of spatial two-dimensional element combination is used to compare the static stiffness of a machine column model with a variety of ribs. First, the convergence of the non-conservative rectangular elements used was verified, and it was proved that the constant strain triangular elements with a coarser mesh can also get higher computational precision than the denser meshes. And compared with the model measured data. Then, this unit was used to compare and calculate the column models with different ribs. Initially obtained some views on the effect of ribs layout on the bending and torsional stiffness of columns.