In order to study the effect of the vertical deformation of continuous beam structure of CRTS Ι slab ballastless track on rail deformation, this paper analyzes the mapping mechanism of the structural vertical deformation-rail deformation. Based on the principle of stationary potential energy, the work derives an analytical expression for a mapping between the vertical deformation of continuous beam structure and rail deformation by considering the effect of the subgrade. Then, the mapping relation between the vertical deformation of various typical bridge structures and rail deformation was calculated using analytical method. The results were compared with those obtained using ANSYS finite element method. The effects of four factors on rail deformation were investigated, namely, pier settlement, staggered steps on girder, rotation angles on beam ends, and number of spans of simply supported beam. The calculation results obtained via analytical method and those obtained using finite element method fit well with each other, verifying the rationality and correctness of the analytical method. The expression for analytical method is concise and can easily obtain the mapping relation between the structural vertical deformation and rail deformation using the displacement boundary conditions. The vertical deformation of the rail was proportional to the vertical deformation of same typical structure. Both inside and outside the rail deformation area, the length of rail deformation section did not change with structural vertical deformation. When there were simply supported beams at both ends of the continuous beam, the number of spans of simply supported beams had no significant effect on the rail deformation caused by the vertical deformation of typical continuous beam structures. When there were no simply supported beams, the settlement of side pier of continuous beam caused rail deformation similar to the staggered step of girder.

为了研究CRTSⅠ平板无ball轨道连续梁结构竖向变形对轨道变形的影响，本文分析了结构竖向变形-轨道变形的映射机制。基于静止势能原理，通过考虑路基的影响，得出了连续梁结构的竖向变形与钢轨变形之间的映射关系的解析表达式。然后，采用解析法计算了各种典型桥梁结构的竖向变形与钢轨变形之间的映射关系。将结果与使用ANSYS有限元方法获得的结果进行比较。研究了四个因素对轨道变形的影响，即桥墩沉降，大梁上的交错台阶，梁端的旋转角度，以及简支梁的跨度数。通过分析方法获得的计算结果与使用有限元方法获得的计算结果相互吻合，证明了该分析方法的合理性和正确性。分析方法的表达式简洁明了，可以使用位移边界条件轻松获得结构垂直变形与钢轨变形之间的映射关系。轨道的垂直变形与相同典型结构的垂直变形成比例。在钢轨变形区域的内部和外部，钢轨变形截面的长度都不会随着结构的垂直变形而变化。当在连续梁的两端都有简单支撑的梁时，简单支撑梁的跨度数量对由典型连续梁结构的垂直变形引起的钢轨变形没有显着影响。当没有简单支撑的梁时，连续梁的侧墩沉降会导致钢轨变形，类似于大梁的交错台阶。