Reasonable Highway Interchange Specifications Applied Research

As China's Expressway develops quickly, people pay much attention to land use and environment impact, safety and service level of the expressway. To be an important component of the entire highway network, interchange hub project costs not only more expensive and takes a lot of land, Which also must be concerned about the safety as the important contents. That is why it received extensive attention and increasingly become an important research topic.In the analysis of existing domestic Interchanges and Some works with a representative of the Interchange design, construction, operation, the latest design concepts at home and abroad. Focus on impact of Interchange hub of the main factors. in-depth analysis of the relationship between land use and interchange specifications. The paper gave out specific measures to the future highway construction and sustainable developmentThrough extensive field research, the papers collect the relevant data of interchange design drawings, collect the operating speed on interchange ramp by field observation. on the basis of observational data, by comparing the analysis of different interchange specifications, the paper get the operating speed change low on the ramp and speed changes lanes. Then through Further theoretical analysis and computation on the main technical specifications the paper get selection principles and application conditions.After that, the paper has studied ways to establish a scientific and rational Interchange programme evaluation system. The evaluation system highlighted land use indicators. Then use the evaluation system rating a interchange to check the theoretical analysis and calculation results.Finally, the research results of this paper are given and give some suggestion for interchange design inadequacy and proposed improvements in using interchange specifications...