二级公路毕业设计论文-二级公路毕业设计

本科毕业设计(论文) 题目：陕西镇安至商南B标段施工图设计

院（系）：建筑工程系

专业：土木工程

镇安至商南B标段新建道路设计

摘要

在本设计中，主要是进行镇安到商南的一条二级公路的设计。设计部分的公路全长3244.593m，设计车速60km/h，双向二车道，不设置中央分隔带。

对交通量进行了分析，查找相应技术规范，确定公路的等级以及设计需要的各种参数。在平面图中进行选线，并进行了方案的比选，确定出最优方案，然后对道路路线进行平面线形设计，本路线缓和曲线处设置超高。纵断面的设计中有三个变坡点，都满足了平纵面线形组合设计中的各种要求。在横断面的设计中，确定了横断面组成及各种要素后，绘制横断面图。路基设计的基本内容，就是确定路基边坡的形状。路面设计内容中包括路面类型与结构设计,本设计中路面设计采用沥青路面，主要是确定各结构层所用材料和厚度。同时对路面进行排水设计，确保道路安全畅通运行。

通过这次设计不但了解建设公路的各个步骤，锻炼了自己解决工程实际问题的能力，而且对所学专业知识起到了巩固和灵活运用的作用。

关键词二级公路；山区重丘；线形；路基路面

Zhen'an to the business design of new roads Shangnan

Abstract

In this design，is mainly carries on Zhenan to a Shangnan‘s and-class road design，the length of this road which we design is3244.593m，the design of the speed is 60km/h，bidirectional two traffic lanes ，and not set up the central of separation strip.

Has carried on the analysis to the volume of traffic，search corresponding technical specifications，highway to determine the levels of need and the design of the parameters . Carries on the route selection in the horizontal plan，the ratio having carried out a scheme's elects and , ascertain out the optimum scheme,the line font having carried out a flat surface on road route designs that, the route relaxes the curve place interposing a superelevation.There are three vertical curves in this Profile Design. And the part has been satisfied even if the tie facing various call for in line font combination design. Has determined the cross section composition and various elements in Cross section design and draws up the cross section chart. The roadbed design of basic content is determining roadbed side slope form and slope. Asphalt Pavement Design using cement concrete pavement , the main structure is to determine the thickness dimension. While on the road for drainage design to ensure road safety and the smoothness of the operation. Bridge design is a major part of its plane, profile and cross-sectional design.

This design not only to understand the various road-building steps，and tempered their practical engineering solutions, also learned to play a solid knowledge and flexibility in the use of the role.

Keywords：Secondary；Mountainous；Alignment；Paveme

目录

摘要............................................................................................................. I Abstract .................................................................................................. II 主要符号表 (i)

1 绪论 (1)

1.1引言 (1)

1.2中国公路研究现状 (1)

2 设计原始数据及依据 (2)

2.1设计原始数据 (2)

2.1.1自然地理概况 (2)

2.1.2交通量资料 (3)

2.2设计依据 (4)

3 路线设计 (5)

3.1道路技术等级确定 (5)

3.1.1交通量计算 (5)

3.1.2公路等级的确定 (6)

3.1.3路线方案的拟定与比选原则 (7)

3.1.4选线的一般原则 (7)

3.1.5山岭重丘区选线要点 (7)

3.1.6选线的方法与步骤 (8)

3.1.7路线方案的拟定和比选 (9)

3.2道路技术标准的确定 (10)

3.3道路平面设计 (11)

3.3.1平面设计原则 (11)

3.3.2平曲线设计 (11)

3.3.3直线、曲线及转角表 (19)

3.3.4逐桩坐标表 (19)