受地形限制,在山区高速公路的设计中常常会面临长大纵坡路段的设计问题。对这一问题的解决策略进行研究。首先论述了长大纵坡路段的界定,继而从上坡和下坡两个角度探讨了长大纵坡路线的设计方法,并针对连续下坡路段提出了几点安全保障设计途径。 Constrained by the terrain, the design of the highway in the mountains often faces the problem of the design of long and long sections. The strategy of solving this problem is studied. First of all, it discusses the definition of long and long section, then discusses the design method of long and long section of slope from two aspects: uphill and downhill, and puts forward some ways of security design for continuous downhill section.