【摘要】 针对高速公路建设中节约土地的问题,提出并研究了具有上下两层道路的高架式高速公路:上层为高速公路,下层既可以是高速公路也可以是低等级公路。结合浙江省的实际,分别从适用性、存在问题这几方面研究了三种建设方案:在规划中就考虑双层公路;在既有地方道路上建设高架高速公路;在平原、丘陵、山区典型地形下既有高速公路上增建高架高速公路。并对高架高速公路与互通立交的衔接问题进行了分析。研究结果表明,双层高架式公路采用立体交通的方式达到了既节约用地又使公路通行能力倍增的效果。综合各方面因素考虑,高架高速公路较适用于高速公路的局部路段或中短途路段。更多还原

【Abstract】 Aimed at land-saving in expressway construction,the elevated expressway that have double layer roads is introduced and researched: upper layer is expressway,under layer is also expressway or low grade road.Combined with reality of Zhejiang Province,in respect of applicability and existing problem,three kinds of construction design are researched: considering double layer elevated highway in plan,building elevated expressway over existing local road,building elevated expressway over existing expressway in typical terrain of plane,hill and mountain area.Connection of elevated expressway and interchange is studied.Research result shows that double layer elevated highway not only save land but also redouble highway capacity by using multilevel traffic method.Based on an overall consideration,elevated expressway is more applicable in part or middle and short range of expressway.更多还原