Highway Route Based On Genetic Algorithms And Multi-objective Decision-making System As A Whole Is Optimized

In design of highway alignment, is an important part and a key problem in highway CAD to create the original project automatically and to optimize the design of highway alignment. Before Genetic Algorithm was applied in this domain,there had been many classical methods,while dealing with most complex problems there are still many shortages on them.Based on Genetic Algorithm ,after the study on process of highway alignment,this paper has made a embedded probe into the creation of original vertical section automatically and the overall opatimzation of plane and vertical section, the following works have been done:1. Based on the given groundline and the manipulative elevation of the constitution, the original vertical section project was created automatically' which satisfies the standards of minimal slope length ,maximal gradient and the elevation restrict automatically.2. Making inherited operation for route designing with its vertical section and plane ,alternating repeatly,then the route alignment was optimized.3. A Multi-objective decision-making system was builded, Which adopts several factors to make a comprehensive evaluation on the road.After being tested by several practical examples, The system which is opened out in this paper has a markable optimization effect,that indicats: it is feasible to introduce Genetic Algorithm and Multi-objective decision-making system into the overall opatimzation of plane and vertical section,the system in this paper can improve the designing quality and lighten the designer's labor intensity,it has a definite vale in both theory and practice.