摘要本设计为K002+150至k005+390段二级公路设计。设计公路等级为二级公路，设计时速为60Km/h，设计年限为15年 。

说明书中对整个设计过程的思路、参考依据、设计路段的地质、地物、各指标的拟定以及各个部分的计算都做了详细的说明。该说明书融合了文字说明和计算说明，主要内容为：定线、平面线形设计、纵断面线形设计、平纵面线形的组合设计、路基横断面设计、涵洞设计、挡土墙设计、路基边坡防护设计、路面结构设计、排水设计、主要参考文献等。50947

平面线形设计包括资料整理纸上定线，平曲线要素确定；纵断面设计包括地面高程、设计高程、填挖深度和竖曲线要素；确定标准横断面，绘出每桩横断面图；最后根据交通量资料及路面设计规范，确定设计方案。整个设计过程严格按照国家有关规范进行。

毕业论文关键词：道路设计；平面设计；路面设计；挡土墙设计；排水设计。

ABSTRACT

This thesis intends to design a Second-class road from K002+150 to K005+390. The design speed volume is 60 Km/h, design of life is 15 years.  

In this instruction, it explains the design's thread, basis of references, the section's geology, the process of working out the target, and the process of counting. The instruction is consisted of two parts: the literal interpretation and calculation specification, which include paper location, the design of flat alignment, profile alignment, associating flat and profile alignment, roadbed transect, culvert, babirusa, the structure of road surface; the drawing of construction budget file, drainage system ,the information of references and so on. 

The plane linear design includes information compiling, lines drawing on paper, fix on requisites of curves; Vertical section design is comprised of road elevation, design elevation, depth of dig and fill and requisites for vertical curve; Contents of horizontal section design are fixing standard horizontal section, mapping every horizontal section; At last make a blueprint according to traffic information and road design rules. The whole process of the design is carried out according to the criterion of nation.

KEY WORDS: road design; plane design; Pavement design; structure design; drainage design.

 目录

第一章   绪论 10

1.1 选题的目的与意义 10

1.1.1目的 10

1.1.2 意义 10

1.2 国内外研究现状及存在的问题 10

1.3 主要研究内容 11

第二章 二级公路概况 11

2.1 路线概况 11

2.2公路定级标准 11

2.3 路线采用的经济技术指标 11

第三章 路线平面设计 12

3.1 选线  选取路线并说明理由 12

3.1.1 了解资料 12

3.1.2 定线的原则 12

3.1.3 定线具体过程 12

3.2．1路线方案确定 13

3.2 路线平面设计 14

3.2.1 确定各平曲线半径及缓和曲线长度