双车道公路线形连续性分析与评价

针对公路线形连续是保证汽车安全行驶的基本要求,以运行车速为中介,提出了相邻路段运行车速相协调的路线设计理念,并参考国外双车道公路及国内高等级公路线形连续性评价标准,提出了双车道公路线形连续性评价标准。经实例分析,证实所提标准较为合理,从而为设计和改建双车道公路提供了重要依据。根据分析结果,讨论了该路段事故多发点产生的原因,并提出了相应的改善措施。此外,从驾驶员行驶舒适性的角度对线形的舒适性作出了评价,并提出了双车道公路线形舒适性的评价标准。

Analysis and Evaluation of Two-lane Highway Alignment Consistency

According to the fact that alignment consistency is essential to insure safe driving,a new alignment design idea was putted forward,in which the coordination of operating speeds of adjacent sections was considered.Furthermore,the criterion to evaluate two-lane highway alignment consistency was brought forward,referring to that of foreign countries and that of freeways in China.The criterion was proved to be logical by analysis of example of application,which offers important gist for two-lane highway design and rebuilding.According to the analysis,the reasons for black-spots were discussed,and the relevant improvement measurements were putted up.At last,the comfortableness of alignment was evaluated,and the criterion to evaluate two-lane highway alignment comfortableness was brought out.