Medium City Expressway Scale And Layout Research

As the process of urbanization and the rapid development of social economy, thedevelopment speed and development of the medium-sized city scale. At the same time,the traffic problem also gradually appear, the city organized group or functionalpartition between the traffic demand especially in the long distance between trafficdemand is increasing. In order to meet the demand of urban traffic between eachfunctional group, city builders often take expressway as a link between the functiongroups. Weinan in the medium-sized city to city in the process of rapid developmentalso faces the same problem. Weinan present situation of expressway, through to thecity development strategy, regional location, industry economy, the overall urbanplanning, factors such as the analysis of the distribution group in weinan frommedium-sized city to city is in the process of rapid development, it is particularlyimportant to expressway planning and construction. Therefore, this article takesweinan as the research object, explores the moderate scale and layout of the urbanexpressway.According to the principle of balance between supply and demand can beobtained rapidly at the end of the road traffic demand and planning expressway trafficsupply can provide should be balanced. And the analysis of traffic demand and trafficcapacity of weinan, and using the density method as the reference, using the method of"supply and demand balance" weinan fast reasonable road network scale is calculated.Finally come to the conclusion that the moderate scale of urban expressway.Articles on expressway layout need to consider some factors in the process of do the concrete analysis, according to the experience of the expressway construction athome and abroad, summed up the principle of expressway layout. Combining with theurban space morphology, urban development strategy planning, overall urban planning,to coordinate social and economic development, on the basis of traffic investigation,traffic location line between using group to guide the layout of expressway, and to therapid road interchange of reasonable planning and layout design for expressway.The paper discusses the structure and the service level of road network of weinan,spatial distribution and growth trend of motor vehicles, planning at the end of weinan,weinan space layout structure, the rail lines to major transportation hubs, etc areanalyzed. According to the method of urban expressway planning layout model,namely the loop and ray combination way. Paper USES the theory of traffic locationgroup between city traffic location line, determine the preliminary conclusion weinanexpressway layout scheme, comprehensive consideration of foreign high grade roadcorridor of access, motor vehicle distribution, contact channel between groups, such associal and economic factors determine the final plan layout of weinan expressway.Expressway node (rapid network interchange and city external gateway) set isreasonable affects the rapid overall function and benefit of road network. Paper fastroad interchange nodes arrangement principle and the minimum distance betweennodes, according to status quo of weinan interchange of road network, planning layoutof the interchange scheme in downtown weinan and city foreign interchange scheme.Finally from the economic benefits of expressway, function benefit, social benefitand environment benefit four aspects to establish a set of evaluation quick evaluationsystem of road network. And according to the scheme of expressway unique featuresand conditions needed for the evaluation of comprehensive selection of the fuzzycomprehensive evaluation method of expressway layout schemes for the evaluation ofthe system.