贵州省湄潭至余庆二级公路双向二车道改扩建工程B标段设计(含CAD图)

贵州省湄潭至余庆二级公路双向二车道改扩建工程B标段设计(含CAD图)(论文说明书25000字,CAD图7张)
摘  要
在本设计中，主要是进行小腮镇到余庆县的一条二级公路的设计。设计部分的公路全长3154.302m，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。纵断面的设计中有四个变坡点，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  平面线形  路基路面
Abstract
It mainly designed a second-class highway from Xiaosai Town to Yuqing County in Zunyi City in this paper.The part which need to design has its standards such as 3154.302 meters'length,speed of 60km/h and two lanes double-sided. [资料来源：www.THINK58.com]
    Before the design,I have made some preparations like analysis of the traffic volume,searching the technical standards,determining the level and collecting all kinds of parameters.While selecting the line on the drawing,I have made the comparison between two proposals to determine the better one. And then I made the design on the routes.It had to notice that the transition curves need set the superelevation.The longitudinal-section's design had four slope-changing points which were fulfill with a variety of requirements in the combination.After determining the compositions and various elements of transverse-section,I could finish the drawings.The disign of the roadbed were to determine the shape of the slope.The design of the pavement concludes types and structures.And the design of asphalt pavement mainly determined the materials and thicknesses of every structural layer.It need to conduct on the drainage's design to ensure the safty and smooth of the highway.
Not only understanding the steps of highway construction,but also I have exercised my ability to solve practical engineering problems.The most important,the progress of the design had played a role in steadying and using my professional knowledges.

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Key words: second-class highway; horizontal alignment; subgrade-pavement
 1基本设计资料
    贵州省湄潭至余庆公路是《贵州省骨架公路网规划》（3388网）中的第二联线，该条路改扩建工程起于湄潭县湄江镇湄江桥头，沿线经过兴隆镇、抄乐乡、松烟镇、敖溪镇、大乌江镇、龙溪镇、小腮镇，止于余庆线白泥镇赵家沟村寨，老路利用率62.97%，路线全长101.64km。
  [资料来源：http://think58.com]

目  录
摘  要    I
Abstract    i
1 初步设计概况    1
1.1基本设计资料    1
1.2工程建设的意义及必要性    1
1.3自然状况对工程设计与施工的影响    1

1.4设计原始数据及依据    3
2 路线设计    4
2.1道路技术等级确定    4
2.2道路技术标准的确定    9
2.3道路平面设计    10
3道路纵断面设计    14
3.1纵断面设计    14
3.2竖曲线设计    16
3.3平纵组合设计    19
4 道路横断面设计    23
4.1横断面设计    23
4.2路肩路拱设计    25
4.3平曲线加宽和超高    26
4.4土石方调配    27
5路基设计    30
5.1路基边坡和边沟    30
5.2一般路基设计    31
5.3路基的类型与构造    32
5.4路基的填土与压实    32
5.5路基防护    33
5.6路基施工要求和注意事项    34
6 路面结构设计    35
6.1路面类型及结构层组合    35 [资料来源：http://THINK58.com]
6.2路面结构组成设计    37
7排水设计    44
7.1排水设计概况    44
7.2排水设计类型    45
8工程量概算    48
8.1概算定义和作用    48
8.2概算费用组成    48
8.3沥青混凝土工程数量表    48
9结论    49
参考文献    50
致  谢    52
附  表 [来源：http://think58.com]