讨论了铁路多跨简支梁桥不同计算图式对横向振动分析结果的影响 .计算表明 ,单墩计算图式对等高桥墩的长桥及柔性桥墩适用性较好 ;当相邻桥墩的墩高或刚度相差较大时 ,可仅考虑该桥墩和相邻梁跨的振动耦联 ;一般情况下 ,应考虑相邻桥墩的耦联振动影响 The influence of different calculation schemes of railway multi-span simple-supported girder bridge on lateral vibration analysis is discussed. The calculation shows that the single pier calculation scheme has good applicability to the long bridge and flexible bridge piers of the equivalent bridge pier. When the abutment piers of adjacent piers When the difference of height or stiffness is large, only the vibration coupling of the pier and the adjacent beam can be considered. In general, the influence of the coupling vibration of adjacent piers should be considered