Interchange channel layout method and system for automatically changing and moving existing road along railway, terminal and readable storage medium

A technology of roads and railways, applied in the field of overpasses and roads, can solve problems such as difficult terrain constraints and difficult to apply to actual situations, and achieve the effects of simplifying optimization problems, weakening coupling interactions, and strong practicability

Active Publication Date: 2021-06-25
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second stage: Propose an accurate solution, but the terrain changes and complex constraints are difficult to express with explicit functions, and there are theoretical deficiencies
The third stage: with the continuous innovation of optimization methods and the growth of computer computing power, a heuristic algorithm that does not depend on explicit functions is proposed. Among them, genetic algorithms are widely used in interchanges, but they are still limited to manual given An initial route plan, in the case of determining the start and end points of the route, optimize the route in the research area, and find a route plan that meets the constraints, which has certain limitations and is difficult to apply to the actual situation

Method used

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  • Interchange channel layout method and system for automatically changing and moving existing road along railway, terminal and readable storage medium
  • Interchange channel layout method and system for automatically changing and moving existing road along railway, terminal and readable storage medium
  • Interchange channel layout method and system for automatically changing and moving existing road along railway, terminal and readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] like Figure 10 As shown, a kind of overpass laying method that automatically changes and moves existing road along the railway line provided by the present invention comprises the following steps:

[0090] S 1 : Establish an optimization model for road and railway interchange lines.

[0091] Among them, the comprehensive geographic information model of the research area is established, and the plane intersection information of roads (including intersection coordinates, radius, and length of transition curves before and after), the position of slope change points in longitudinal section (including mileage, elevation, and vertical curve radius), bridges and tunnels are introduced. The location (including mileage and elevation) and the intersection of the rebuilt road and the new railway, and the two connection points with the existing road are used as decision variables. The optimization function (objective function) is to find out the lowest comprehensive cost, and va...

Embodiment 2

[0197] On the basis of Embodiment 1, Embodiment 2 of the present invention provides a system based on the laying method of overpasses that automatically relocate existing roads along the railway line, including:

[0198] The optimization model construction module is used to construct the optimization model of the road and railway interchange line, and the optimization module includes: decision variables, constraints and optimization functions in the research area;

[0199] The grid division module is used to divide the research area into unit grids;

[0200] The search segment division module is used to determine the starting and ending cell sets S, E of the connection between the locally rebuilt roads and the existing roads in the research area according to the existing roads and railways, and the cell sets L, R on the left and right sides of the railway, and then search the path Decomposed into two non-intersecting segment searches and intersecting segment searches;

[0201...

Embodiment 3

[0210] On the basis of Embodiment 1, an embodiment of the present invention provides a terminal, which includes a processor and a memory, the memory stores a computer program, and the processor invokes the computer program to execute:

[0211] S 1 : Establish an optimization model for road and railway interchange lines. S 2 : Divide the research area into unit grids, and then determine the starting and ending cell sets S, E and the cell sets L, R on the left and right sides of the railway, according to the existing roads and railways in the research area. Further, the path search is decomposed into two non-intersecting segment searches and an intersecting segment search. S 3 : Use DT algorithm to search for lines on two non-intersecting segments. S 4 : Iterative search to get the local line of the cross section. S 5 : Integrate the generated two non-intersecting sections and intersecting sections to form several complete routes, and use the optimization function as the ...

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Abstract

The invention discloses an interchange channel layout method and system for automatically changing and moving an existing road along a railway, a terminal and a readable storage medium. The method comprises the following steps: S1, constructing an optimization model of a road and a railway interchange channel line; S2, performing unit grid division on the research area, and decomposing path search into two non-cross section search and cross section search; S3, performing path search on the two non-crossed sections and the crossed section based on the optimization model; and S4, splicing and integrating the N paths, the M paths and the P cross section local lines in the step S3 to form a plurality of complete lines, determining an optimal line by taking an optimization function as a target function, and performing curve fitting of a plane and a longitudinal section based on the optimal line to obtain a final line scheme. The method is decomposed into path search of non-crossing sections and crossing sections, coupling interaction of connecting points and crossing points is weakened, and road and railway interchange channel optimization is achieved.

Description

technical field [0001] The invention belongs to the technical field of railway design, and in particular relates to an overpass laying method, system, terminal and readable storage medium for automatically changing existing roads along railway lines. 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. In order to meet the needs of road transportation, the number of roads built and under construction has increased year by year, and the existing road network has become more dense. In the process of railway construction, there are a lot of intersections between existing roads and existing or new railway lines in many cities and regions, and are limited by the intersection angle, effective clearance and line shape of the intersections. In order to ensure that the existing roads In the case of limited time and energy, engineers o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/18G06F30/23
CPCG06F30/13G06F30/23G06F30/18
Inventor 蒲浩谢淑敏梁柱李伟宋陶然赵璐
Owner CENT SOUTH UNIV
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