Study On Distribution Routing Optimization Of Cold Chain Logistics For Agricultural Products In Urban Areas

Nowadays,in the market for agricultural products,consumer demand is becoming much more diversified and efficient logistics distribution service is required.In fact,effective policies have been engaged and fine installations and facilities have been constructed in line haul.However,branch transportation in the urban areas has not been paid enough attention,leading to the hot topic so-called "last mile"In this instance,common people have to face unfavorite condition,such as high price,low freshness,high rate of damaged cargo,unstable supply.Therefore,study on distribution routing optimization for agricultural products in urban areas is significant to control cost and improve service.After plentiful literature research,the article deeply analyze theory about distribution routing in urban areas and build perfect model.Compared with similar article,this article consider more factors,such as customer satisfaction,landing time,traffic jam coefficient and traffic control.In the article,combination between routing optimization model and GA has been accomplished,furthering the application of GA in routing optimization.To get over the defects,such as low velocity of convergence,high local optima probability,GA has been improved in the article by the means of optimizing the optimization space,demarcating fitness function and promoting the group diversity. Finally,the case of Dalian Lvchen Agricultural Products Distribute Center is described and analyzed,improved GA is applied to practical model to optimize agricultural products routing in urban areas,which proves practicability and validity of model and algorithm.