Study On Average Longitudinal Slope Of Montanic Expressway

With the development of the mountainous area highway construction, there will be more and more continuous longitudinal grade sections. Data shows, the road traffic accidents, seriously endangers safety. The relevant research focuses on the longitudinal grade single and lack of integrity, continuous longitudinal grade paragraphs. No complete specifications and the average value of the longitudinal grade, in design, design personnel to follow, no chapter for longitudinal grade size and length is unable to control. Therefore, the mountainous area highway for an average of longitudinal grade control grew longitudinal grade, safety is very necessary and urgent needs to solve the problem.Through a large collection of related data and documents, in the road test investigation data, through the experiment with the theoretical analysis, a time of vehicles, the development trend of the rated load and power to weight 10~upward-leading continuous casting. the than 7.0-15% in large vehicles for the research scope of the dominant model, Through the mountainous area highway freight trucks for longitudinal grade sections of the dynamic performance and continuous uphill road capacity analysis, research and mountainous highway slope length and average longitudinal grade should be limited to downhill direction for the main control factors of safety of principle, Analysis of the continuous longitudinal grade road freight trucks running speed, slope sections goods used car brake temperature model, through the test section of continuous longitudinal grade data analysis, proposed the mountainous area highway slope length and longitudinal grade average respectively limit, Puts forward continuously downhill road sections, brake failure accident hidden with mountainous highway traffic accident characteristics of continuous longitudinal grade in traffic accidents, statistical analysis methods for making a comprehensive analysis.