论文部分内容阅读
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。
In view of the problem of land conservation in expressway construction, an elevated highway with two upper and lower roads is proposed and studied: the upper one is an expressway, and the lower one can be an expressway or a lower grade one. According to the actual situation of Zhejiang Province, three kinds of construction schemes are studied respectively from the aspects of applicability and existing problems: double-decker highway is considered in the planning; elevated highway is set up on the existing local roads; in the plain, hills and mountains Topography of the existing freeway on the construction of elevated highway. And the connection between elevated expressway and interchange is analyzed. The results show that the double-storey elevated highway achieves the effect of saving the land and doubling the capacity of the highway by adopting the three-dimensional traffic mode. Taking all factors into consideration, elevated expressway is more suitable for local expressway sections or mid-short sections.