摘 要我国交通事业迅速发展，新建公路工程层出不穷。同步，诸多初期规划的路段都不能满足需要，公路改建势在必行。老路的改建必将越来越多，因此，改建技术急需深入研究与提高，以完善国家基础设施建设，满足日益增长的交通需求。 本文以 S336 江都段改造工程施工设计为研究对象。S336 江都段改造工程路线全长13.714 km，全线采用品有集散功能的平原微丘区一级公路原则，设计计算行车速度 80 km/h，集镇段限速 40 km/h。本设计范围为通江段（K5+888.224～K13+714.437）。该段路基采用整体式 24.5 m 原则一级公路断面。路线共跨越四条河流，与平面交叉共三处，与乡村道路交叉共 6 处。本文在工程可行性研究的基础上，完毕了路线、路基、路面的设计。简介了工程的设计背景及沿线的水文地质等概况，并对工程的设计概况进行总体阐明。结合施工图设计的整个过程，较全面地论述了平原地区高等级公路改造工程的路线、路基、路面的设计原则和措施，着重研究了路线方案的比选、特殊路基的设计以及路面构造的设计。关键词：路线 路基 路面 施工图设计AbstractToday, our country road traffic cause develops very fast; newly built highway engineering emerges in an endless stream. At the same time, a lot of highway early planning sections can't satisfy the demand, and these reconstructions are unavoidable. There will be more and more rebuilding of the old road, so, reconstruction technology need badly further research and practice in order to improve the national basic construction of facilities and meet the traffic demand increased day by day.This thesis regards improvement project detail design of Section of Jiangdu of S336 as the research object. The total length of 336 Jiangdu section improvement project is 13.714 km.It adopts the standard of Class I Highway of hilly terrain and plain district with collecting and distributing function completely. The design and calculate driving speed is 80 km/h, and the speed of market town section must not surpass 40 km/h. The design sphere is the Sectio...
