Optimal Design Method for Line Profile Before Track Laying

Abstract

The invention discloses an optimized design method of a longitudinal section of a route before track laying. The method comprises following steps: S1, constructing an optimized design custom entity of the longitudinal section of the route before track laying; S2, setting optimized control parameters of the longitudinal section; S3, setting automatic adjustment control parameters of the longitudinal section; S4, performing automatic adjustment design on the longitudinal section of the route; S5, constructing an intelligent optimized mathematical model of the longitudinal section of the route; S6, performing intelligent optimization design on the longitudinal section of the route; S7, outputting an optimized comparison result of the longitudinal section of the route. According to the method, quantitative subsection optimization of the longitudinal section of the route is realized firstly through automatic adjustment design, then intelligent optimization design is performed with an intelligent optimization algorithm, overall optimization of the longitudinal section of the route is realized, the mathematical model is advanced, the existing work means is innovated, the work efficiency and quality of the optimization design of the longitudinal road section can be remarkably improved, the automatic and intelligent degrees are high, the practicability is high, the production efficiency can be greatly improved, and the method has obvious popularization and application value.

Description

technical field [0001] The invention relates to an optimal design method for a line longitudinal section, in particular to an intelligent optimal design method for a line longitudinal section before rail laying. Background technique [0002] After the bridge and tunnel civil engineering structures of railway and urban rail transit lines are completed, due to factors such as measurement errors, construction errors or errors, and structural deformation and displacement, it will inevitably affect the line profile overrun and line smoothness. The elevation error of the longitudinal section generated after the above-mentioned construction must be adjusted before the track construction to ensure that the limit and track smoothness meet the design requirements. The longitudinal section of the line is represented by the mileage, elevation, slope length and slope of the slope change point. The adjustment of the vertical section mainly refers to changing the slope length and slope of ...

AI Technical Summary

Problems solved by technology

Since the number and position of the slope change points on the longitudinal section are affected by many factors, and the adjustment of one slope section will inevitably affect the change of the overrun of the adjacent slope section, the optimal adjustment of one slope section cannot guarantee the encroachment of the entire line longitudinal section. The limit value is the smallest, and its interrelationship is very complicated, which makes the optimal design of the longitudinal section very difficult, and it is difficult to find a satisfactory design result only by human thinking and imagination

For a long time, designers have been using manual calculation or auxiliary design to optimize the design of the longitudinal section before laying the track. The explicit relationship between the mileage and elevation of the slope change point is not easy to express. At the same time, various constraints need to be considered. The optimization process is more complicated, which makes the quality of the traditional optimization design results not high, and seriously restricts the profile of the track before laying. Progress of optimization design work

Images