多车道高速公路超高过渡方式分析

Analysis on Superelevation Transition Mode of Multi-lane Expressway

超高过渡对行车舒适、路容美观以及路面排水非常重要。介绍了多车道高速公路的三种超高过渡方式并对其优缺点进行分析。六车道及以上车道数的高速公路路面较宽,路面排水路径较长,且随着横向宽度的增加,路面横坡较缓段落长度也会增加,针对六车道及以上车道数高速公路,采用在行车道中间增设1~2条路拱线以加速排水的超高过渡方法,优化路面排水问题。

Superelevation transition is very important for driving comfort, beautiful road appearanceand pavement drainage. Three kinds of superelevation transition modes of multi-lane expressway are introduced, and the advantages and disadvantages are analyzed. The pavement of expressways with six or more lanes is wider and the pavement drainage path is longer. With the increase of the transverse width, the length of sections with gentle cross slope will also increase. For expressways with six or more lanes, the superelevation transition method of adding 1~2 crown lines in the middle of the carriageway to speed up drainage is adopted to optimize the pavement drainage.