Existing railway vertical section line shape reconstruction method, computer storage medium and equipment

The invention relates to the technical field of railway design, and provides an existing railway vertical section line shape reconstruction method which comprises the following steps: constructing an existing railway vertical section line shape reconstruction optimization model based on design variables, a target function and constraint conditions; initial identification of geometric attribution of the measuring points is completed based on a slope change rate threshold method; reconstructing an initial longitudinal section line based on a straight curve adaptive method; and performing iterative optimization on the initial longitudinal section line shape based on the point-line consistency to obtain a final reconstructed longitudinal section line shape. According to the scheme, the problems of geometric attribution identification, specification constraint, forbidden zone constraint and the like of the measuring points are considered, the initial longitudinal section line shape is reconstructed based on the st