二级公路路线设计(毕业设计)

摘要

本设计为某山岭地区二级公路路线设计，设计车速为60Km/h，采用双向两车道形式，无中央分隔带。本次设计充分考虑地形、地质、地物、水文等自然条件，并根据设计任务书的要求及公路的相关规范的规定，在老师的指导下完成设计。

本设计的内容有：平面、纵断面和横断面设计。平面线形设计包括资料整理与平面定线，平曲线要素确定，加宽与主要点的桩号及坐标计算；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，填挖高与路基边线高程计算；横断面设计包括确定标准横断面，绘出每桩横断面图；整个设计过程严格按照国家有关规范进行。该说明书主要内容为：平面定线、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、结语，谢辞和主要参考文献等。

关键词：道路等级；选线；平面线设计；纵断面设计；横断面设计。

ABSTRACT

This design is about a road of second grad in the mountain area, Designing speed is 60km/h. It is a two-lane two-way road, no central separate belt. The design fully consider the terrain, geology, terrain, hydrology and other natural conditions, according to the relevant specifications and design requirements of the task of highway, completed the design under the guidance of the teacher.

The design includes: plane, longitudinal section and cross section design. The plane linear design includes the data plane alignment, certain elements of horizontal curve calculation and the main points, widening pile number and coordinate; longitudinal section design including elevation, design elevation, the depth of cut to fill and vertical curve elements, fill and excavation height and roadbed side elevation calculation; cross-sectional design including the determination of standard section, draw each pile sections; the entire design process, in strict accordance with the relevant standards of the state. This manual mainly contents: horizontal alignment, horizontal alignment design, profile alignment design, horizontal and vertical alignment design, the cross-sectional design, the conclusion, thanks and main references.

Keywords: road grade, route selection, vertical design, horizontal design, cross-sectional design.

目录

摘要 (1)

ABSTRACT (2)

目录 (1)

1.绪论 (1)

1.1选题背景1

1.1.1道路运输概述 (1)

1.1.2我国道路发展情况 (1)

1.2本设计基本情况 (2)

2.路线平面设计 (2)

2.1 二级公路选线原则 (2)

2.2选线 (3)

2.3定线 (4)

2.3.1路线简介 (4)

2.3.2带缓和曲线的圆曲线计算 (4)

2.3.3曲线上整20米桩号的坐标计算 (6)

3.路线纵断面设计 (7)

3.1概述 (7)

3.2纵断面设计的原则： (8)

3.3纵坡设计 (8)

3.3.1纵坡设计的一般要求： (8)

3.3.2纵坡坡度 (8)

3.3.3平纵组合设计 (9)

3.4竖曲线设计 (10)

3.4.1竖曲线设计的一般要求 (11)

3.4.2竖曲线半径 (11)

3.4.3竖曲线计算 (11)

4.路线横断面设计 (14)

4.1概述 (14)

4.1.1横断面布置 (14)

4.1.2横断面设计原则： (14)

4.1.3路基横断面的主要形式： (15)

4.2各项技术指标 (15)

4.2.1路基宽度 (15)

4.2.2路拱及路肩坡度 (15)

4.2.3边坡坡度 (16)

4.2.4边沟设计 (16)

4.3超高与加宽 (17)

4.3.1概述 (17)

4.3.2超高横坡的确定 (18)

4.3.3超高缓和段 (19)

4.4超高值计算公式 (20)

4.5曲线段超高与加宽的过渡 (22)