Genetic Optimization Algorithm For Highway Longitudinal Section Based On Dynamic Slope Length Concept

The linear design of the highway aims at economy,safety,comfort and environmental protection.At the same time,the key design of highway construction projects is that it must meet the design specifications and other related technical standards.The alignment optimization design has gone through the stages of paper,CAD-based and virtual environment alignment.Currently,the research focuses on three-dimensional and artificial intelligence alignment design methods.In recent years,great progress has been made in the artificial intelligence alignment design.However,in face of the vast demand for road construction both at home and abroad,especially in the context of "One Belt and One Road",it is of great significance to continue advancing the methods of artificial intelligence alignment design which is still not perfect.The design staff to determine the main line of the main technical standards and linear design.This approach is easy to design ideas limited,the design staff labor intensity,project design cycle longer defects.In order to improve the quality and efficiency of the road profile operation,reduce the work intensity of the relevant workers.The domestic and foreign research on the method of optimization of the vertical section of the highway has also been carried out for several decades,but it has not been perfectly solved.The core problem is that the optimization result can't meet the design specifications well and needs further work.One of the keys is that the number of variables is constant during the optimization process,but the actual situation is that the vertical slope length varies and the number of slope points is not fixed.In order to make the optimized result of vertical section more in line with the actual situation,in this paper,the author proposes a dynamic slope length strategy in the optimization of the vertical section of the highway based on genetic algorithm,and verifies it by developing the program.The main work is the following:(1)The overall design of highway vertical section alignment optimization system based on dynamic slope length theory is given.(2)Based on the raster data model,the optimization model of highway vertical section based on dynamic slope length theory is proposed.(3)Based on genetic algorithm,an optimization method of dynamic slope length optimization model for highway is proposed.(4)Verify the proposed method by programming.The verification results show that this method can effectively solve the problem that the length of slope is fixed in the traditional optimization of vertical section of highway,and make the optimization result more in line with the actual situation.