Overpass layout method and system for automatically changing existing roads along railway lines

Abstract

The invention discloses an overpass layout method, system, terminal and readable storage medium for automatically changing and moving existing roads along a railway line. The method includes: step S1: constructing an optimization model of road and railway overpass lines; step S2: Carry out cell grid division in the research area, and decompose the path search into two non-intersecting segment searches and intersecting segment searches; Step S3: perform path search on two non-intersecting segments and intersecting segments based on the optimization model; Step S4: use step The N paths, M paths and P intersecting partial lines in S3 are spliced ​​and integrated to form several complete lines, and the optimal line is determined with the optimization function as the objective function, and the curves of the plane and longitudinal sections are carried out based on the optimal line Fitting to get the final route scheme. The invention decomposes into path search of non-intersection section and intersection section, weakens the coupling interaction between connection point and intersection point, and realizes the optimization of highway and railway overpass.

Description

technical field [0001] The invention belongs to the technical field of railway design, and in particular relates to a method, system, terminal and readable storage medium for laying interchanges for automatically changing existing roads along a railway line. Background technique [0002] Railway is an important national infrastructure and the main artery of the national economy. It 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, a large number of existing roads and existing or new railway lines crossed in many cities and regions, and were restricted by the intersection angle, effective clearance and alignment of the intersections. With limited transportation safety and traffic capacity, illegal roads will inevitably be rebuilt. With...

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

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