摘   要：研究了地震作用下柱截面尺寸的变化对高层错层结构的影响，分析了不同截面尺寸下X向地震作用和Y向地震作用下柱剪力和位移的变化趋势。通过控制柱截面尺寸对错层结构进行优化设计，设置了五种不同柱截面尺寸方案，并通过SATWE软件静力分析了错层柱处的剪力以及结构的最大位移。分析结果表明：尽管方案选型不同，但错层柱在地震下的剪力变化趋势大体相同，只是数值大小不同；适当减小中柱截面尺寸对于控制结构剪力和位移是有利的；Y向地震作用下，结构剪力和最大位移变化情况和X向地震作用类似。

Abstract: The split-level structure is analyzed under the earthquake action, and the influence of column section size of high-rise split level structure on the column shear force and displacement change under the seismic action of X and Y in different section size is researched. Five different programs about column section size are analyzed by controlling the size of column to optimize the design of split-level structure, and then the static analysis of maximum displacement and shear force of staggered column is conducted by SATWE. The results show that the shear force changes of split-level columns have the same trend although different scheme selection, just have different numerical values; it is benefit to control structure shear and displacement by reducing the column section size appropriately；the shear force and displacement change of structure have the same trend under the seismic action of X and Y.