Existing railway longitudinal plane line position integral intelligent reconstruction method

It is an existing railway and longitudinal technology, which is applied in the direction of instruments, CAD technology, electrical digital data processing, etc., and can solve the problems that the alignment cannot meet the specification design requirements, the accuracy cannot meet, and the alignment cannot meet the needs of work, etc.

CN109977599AActive Publication Date: 2019-07-05CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-07-05

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Abstract

The invention discloses an existing railway longitudinal plane line position integral intelligent reconstruction method, which comprises the following steps of 1) establishing a longitudinal plane line position integral reconstruction optimization model by taking the number of variable slope points, the positions of the variable slope points and the vertical curve radius as optimization variablesand taking the minimum sum of squares of whole line integral lifting and falling path quantities as an objective function and considering various constraint conditions; 2) according to the gradient change rate of the actual measurement point, preliminarily dividing the actual measurement point into a series of straight line and vertical curve point groups; 3) fitting the divided straight line andvertical curve point group, then adjusting the point group to which the actual measurement point belongs according to a fitting result, and further dividing the straight line and vertical curve pointgroup; repeating the step until the attribution of each actual measurement point is not changed any more, and solving the variable slope point quantity accurate value and the values of other optimization variables; and 4) taking the solving result of the step 3) as an initial solution, and solving the optimal solution of the optimization model by adopting a particle swarm optimization algorithm torealize the overall intelligent reconstruction of the existing railway longitudinal plane line position. The method is high in efficiency and precision.
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Description

technical field

[0001] The invention relates to a railway design method, in particular to an overall intelligent reconstruction method of the existing railway longitudinal line position. Background technique

[0002] The railway is an important national infrastructure and the main artery of the national economy, and plays an important role in my country's economic and social development. The addition and reconstruction of existing railways is one of the key tasks in the field of railway construction in my country in the future. The longitudinal reconstruction of existing lines is an important link in the design of additions and reconstructions of existing lines; and long-term operation and maintenance cause the longitudinal profile to deviate from the original design, resulting in track Irregularity affects driving safety and passenger comfort. Therefore, in routine railway work, it is also facing a lot of railway rectification work. It is of great significance to carry out ...

Examples

Embodiment Construction

[0178] In this embodiment, the technical scheme of the present invention is further described by taking the reconstruction design of the longitudinal line position of the existing Shimen-Changsha railway as an example. Such as figure 1 As shown, the existing railway longitudinal line position reconfiguration design method involved in the present invention comprises the following steps:

[0179] S 1 : Take the number N of slope change points, the position of each slope change point (including mileage X and elevation Y), and the radius R of each vertical curve as optimization variables, and take the square sum ∑d of the overall lift and fall of the whole line j 2 The minimum is the objective function, and various constraints are considered to establish an overall reconstruction optimization model of the vertical line position; the constraints include:

[0180] (1) The reconstructed longitudinal surface line should be higher than the calculated rail surface line and meet the m...