Interchange Design Based On New Conception Of Highway Hesign

Interchange is a communication node of the highway mainline and crossed Highway,and essential for highway local service and stimulating the local economic growth. Whetherthe expressway interchange selection and design is reasonable, has great significance on thehighway traffic conversion capability, operational safety, traffic efficiency and economicbenefits. But the backward existing interchange design concepts cause design content anddesign lack of depth, which resulted in the poor performance during the highwayimplementing and operating. Based on these, guided by the new concepts, this paperdeveloped the research in the design of the interchange, in order to improve the developmentof the design of China’s interchange.On the basis of analyzing and summarizing the interchange design development andapplication status at home and abroad, relying on Dafu Interchange project crossing onDaqing-Guangzhou Expressway, this paper studied in the selection of the interchange formand program, and summarized interchange alternatives principle under humanized designconcept. Combined with the basic survey data of the supporting engineering, this paperdiscussed interchange humanized design methods and design elements, including horizontal,vertical, and crossing section design of mainline and ramp, embankment protection, drainagedesign. Based on computer real-time dynamic mode, this paper explicit the influence ofInterchange Area design on traffic safety and visual effects through the dynamic run test of athree-dimensional model based on the project. In addition, it analyzed the deficiencies of theexisting design methods of the interchange security facilities, and gave the correspondingimprovement strategies.Research results had a positive effect for people to understand the connotation ofhighway new concepts, and provided a reference and basis for our country’s highwayinterchange construction.