1、 I 摘摘 要要 本设计为某二级公路的初步设计，该路线全长 2961.4m,设计车速 60km/h， 双向双车道， 路基宽为10m。 全线共设置三个转角 （曲线半径分别为300m、 150m、 1000m。 其中第三个转角处没设缓和曲线） 。 两个变坡点 （纵坡坡度分别为-0.47%、 -1.12%、-0.49%） 。 在本次设计中，主要设计的项目包括：公路等级的确定、路线方案拟定和 比选、平面设计、纵断面设计、横断面设计、路基路面综合排水设计、沥青路 面结构层设计、涵洞小专题设计、工程概预算以及与各部分内容相关的表格和 图纸。本设计是结合地形图及周边的环境，根据设计规范、设计原则，对道路 进
2、行综合设计。并在老师的指导下对设计中不妥之处进行修改完善。 关键词关键词：二级公路；平曲线；纵断面；横断面；排水；沥青路面。 II Abstract This design is mainly on a secondary highway from. The route length is 2961.4 meters, 60km/h of design speed,two-way double driveway, roadbed wide for 10 meters. Across the board set up three corners (curve radius, respective
3、ly 300 meters, 150 meters, 1000 meters. There was no easement Curve in the third corner). Two Change Point of Gradient (respectively 0.47%, -1.12%, -0.49%). In this design, the main design projects containg: determination of road grade, route selection of programming and design, graphic design, long
4、itudinal section, cross designs, comprehensive drainage design of subgrade and pavement, asphalt pavement structural layer design, culvert design of small topic, project budget, and parts tables and drawings related to the content. The design is a combination of topography and the surrounding environment; and according to design specification; and design principles, on the road to comprehensive design. And under the guidance of the teachers to design deficiencies modified perfected. And under t
