During the primary design of frames, the section sizes are estimated according to the beam span and the axis force bearded by column, but the structural anti-side stiffness will not be the maximum.

• 摘要框架结构初步设计中，梁柱截面尺寸估算分别按照梁的跨度及柱所分担的轴力来进行，由此得到结构抗侧刚度并不一定最大。