Existing railway horizontal and longitudinal integrated auxiliary optimization design method

Abstract

The invention discloses a horizontal and longitudinal integrated auxiliary optimization design method for an existing railway. The method comprises the following steps of (1) data input, wherein input data comprise control information, broken link data, actual measurement data, limit data, a line equipment ledger and an existing line ledger; (2) flat and vertical section graph display: the displayed graph comprises a vertical section linear graph and a plane linear graph, so that the railway line shape can be intuitively observed; (3) optimizing the line shape of a flat longitudinal section, wherein the optimization comprises the optimization of the line shape of the longitudinal section and the optimization of the plane line shape; and (4) independently checking and mutually checking the longitudinal section line shape and the plane line shape, returning to the step (3) if the longitudinal section line shape and the plane line shape do not conform to the railway maintenance design specification, and outputting longitudinal section line shape data and plane line shape data if the railway maintenance design specification is conformed. According to the invention, by inputting existing measurement data, automatic fitting of a vertical section and a plane line shape can be realized, manual optimization and manual modification are realized, and line shape optimization is more convenient.

Description

technical field [0001] The invention belongs to the field of railway engineering design, in particular to a method for auxiliary optimization design of existing railway horizontal and vertical integration. Background technique [0002] Due to the long-term operation of the existing railway lines, the geometric dimensions of the lines deviate from the original design position more and more. The railway engineering department conducts daily line maintenance according to the relative smoothness, resulting in deformation of the vertical section slope; changes in the position and elevation of the slope point; the plane curve The position of the five major piles deviates seriously; the positive vector of the curve is bad; Therefore, there is an urgent need for a method that can redesign the track alignment according to the actual position of the existing line. Under the requirements of the railway line design specification, on the basis of ensuring the smoothness of the track, com...

AI Technical Summary

Problems solved by technology

[0007] 1. Separate fitting and optimization of horizontal and longitudinal sections without mutual integration will lead to problems such as overlapping of vertical curves and transitional curves, and horizontal and vertical curves entering weak sections of the line;

[0008] 2. Failure to judge whether the starting point is a deformation point leads to inaccurate slope calculation based on the starting point, and the large amount of landing and landing increases the difficulty of on-site construction;

[0009] 3. The lack of automatic optimization function, or the automatic optimization function is not perfect, the workload of manual intervention is heavy, and the work efficiency of linear optimization is low;

[0010] 4. The plane alignment optimization design process does not consider factors such as margin, line bridge eccentricity, line spacing, and ballast thickness. The optimized alignment has problems such as limit violation, line bridge eccentricity exceeding the limit, and line spacing not meeting the safety requirements of train operation. ;

[0011] 5. The conductance height of the power supply was not considered in the process of linear optimization design of the longitudinal section, and there were problems in the designed scheme, such as the large number of landings and landings, which affected the conductance of the power supply;

[0012] 6. Lack of graphical editing functions, the graphical interface can only be used for design display, and cannot be edited directly on the graphics, it is not friendly to inexperienced designers, and the same problem needs to be modified repeatedly to meet the actual situation on site

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