A double-layer optimization method for railway lines based on gis and differential evolution algorithm

Abstract

The invention discloses a double-layer optimization method of railway lines based on GIS and differential evolution algorithm. The optimization method includes four steps: firstly, using GIS technology to construct digital elevation models and environmental constraint objects between the start and end points of the line; Composition, digital elevation model and environmental constraint objects determine the total investment objective function; then determine the corresponding optimization strategy parameters according to the intersection point distribution, that is, design variables, design variable value ranges and optimization cycle termination conditions; finally initialize the scheme population and optimize according to the plane In the process, the double-layer optimization model of the nested longitudinal section optimization process is carried out, and the differential evolution of the scheme population is carried out. After the loop termination condition is satisfied, the line scheme with the smallest total investment objective function value is selected as the final optimized line. The purpose of the present invention is to provide an effective way to realize the intelligent optimization design of railway lines in the GIS environment, and indicates the steps for solving the optimization problem of railway lines by swarm intelligence evolution algorithm.

Description

technical field [0001] The invention relates to the technical field of railway engineering, in particular to a double-layer optimization method for railway lines based on GIS and a differential evolution algorithm. Background technique [0002] Artificial intelligence is a strategic technology leading the future, and related software products have been deeply applied in many fields such as e-commerce, equipment manufacturing, logistics and transportation, transportation planning, and public management. The construction process is also combined with artificial intelligence software to improve construction speed and accuracy. In the engineering design industry, computer-aided design software, which is a basic production tool, is developing in the direction of 3D information models, but 3D information models are only a tool for expressing plans and cannot replace engineers' meticulous design ideas and methods. In the railway design process, the line plan and longitudinal secti...

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Problems solved by technology

At present, the traditional route design determines the implementation plan through the comparison of several plans and the adjustment of local sections of the plan. Due to the complexity of the geographical environment, the diversity of follow-up professional requirements, and the comprehensive cost calculation, the manual design method based on the empirical model Generally unable to find the best route solution

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