改建公路工程实例.doc

word完美格式 PAGE 精心整理 学习帮手 我国交通事业迅速发展，新建公路工程层出不穷。同时，很多早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，改建技术急需进一步研究与提高，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，全线采用具有集散功能的平原微丘区一级公路标准，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标准一级公路断面。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，完成了路线、路基、路面的设计。介绍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说明。结合施工图设计的整个过程，较全面地阐述了平原地区高等级公路改造工程的路线、路基、路面的设计原则和方法，着重研究了路线方案的比选、特殊路基的设计以及路面结构的设计。 关键词：路线 路基 路面 施工图设计  Abstract Today, 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 cant 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 Section of Tongjiang (K5 +888.224 ～ K13 +714.437). This section of subgrade adopts the standard section of Class I Highway of integral 24.5 m. The route crosses over four rivers, has three at-grade intersections, and six intersections with rural roads. On the basis of project feasibility research, this thesis has finished the design of the route、subgrade and pavement. The introductory song has introduced such overview as the design background of the project and hydrogeology along the line and so on, later proved virall