摘要嘉桂一级公路(嘉禾-桂阳)位于湖南省境内，线路全长 1796.854m。采纳六车道的公路技术标准，设计车速为 80km/h,设计年限为 15 年。首先根据交通量确定道路等级和技术标准，然后在 1:4000 地形图上确定三条备选路线，最后对所定路线进行方案比选，从中选择最佳方案。根据设计任务书提供的设计资料和设计要求以及部颁标准和法律规范对嘉桂一级公路K0+000~K1+796.854 段进行了路基路面综合设计。这主要设计内容包括平面设计，纵断面设计，路基横断面设计，路基稳定性分析，边坡防护设计，路基和路面排水，沥青路面和水泥路面的设计等。关键词：一级公路； 路基；路面；综合设计AbstractThe Jiagui arterial highway (Jiahe to Guiyang) locates in Hunan province. The circuit in length is 1796.854m. It adopts six highway technique standard of the driveways. The design speed is 80km/h . The design time limit is 15 years.First of all, I should determine the road technique grade and technique standard according to the traffic volume, then, three spare routes are determined in the terrain map with a scale of 1:4000 and there is a compare between the three projects and the better will be adopted. At last ,according to the technical standards and specifications for highway design published by the Ministry of Communications of China, the comprehensive design of subgrade and pavement from K0+000 to K1+796.854 of Jia Gui arterial highway is carried out based on the design data and requirement in design specification. This main design contents include the plane design , the vertical section design,subgrade cross-sectional design,subgrade stabilization analysis,side slope protection design, subgrade and pavement drainage, Asphalt pavement and cement road surface design and so on.Key word：Arterial Highway；subgrade,；pavement,；comprehensive design第一章公路等级的确定根据《公路工程技术标准》总则，公路根据使用任务、功能和适应的交通量分为高速公路、一级公...
