二级公路设计说明书

河南理工大学2014届本科生毕业设计

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摘 要

本设计是对温州市泰顺县横坑乡桥头至小李庄的一段二级公路的设计。该道路为浙江地区道路交通网规划中的一条干线，对浙江省温州市泰顺地区当前及今后的经济发展将起到极大的推动作用。本路线为山岭微丘区沿河路段，根据课题的研究背景以及工程可行性研究报告，本着经济、安全、实用、美观的原则，结合当地的水文、地质、自然情况等资料进行选线，根据规划年的交通量确定道路的等级，并进行了平面、纵断面、横断面、路基、路面、排水等设计以及土石方的计算和调配等工作。

关键词：二级公路 平面 纵断面 横断面 排水 河南理工大学2014届本科生毕业设计

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Abstract

This is a design related to a section of secondary highway from Qiaotou to

Xiaolizhuang located in Hengkeng Town, Taishun County, Wenzhou. This highway,

which is a trunk in the transport network planning of Zhejiang, will play a significant

role in promoting the presentand the future economic development of Taishun

Wenzhou Zhejiang. According to the research background of the subject and the

project feasibility study report. In the spirit of economy, safety, practicality and

beauty, this design which passes through the mountains and hilly regions,integrating

the information of local Hydrology, geology and nature, conducts route selection and

assigns degrees of the road according to the traffic volume in planning year.

Meanwhile, it carries out designs on planes, profiles, sections, subgrades, pavement

and drainage, and involves the earthwork calculation and allocation.

Key Words:secondary highway plane profile section drainage 河南理工大学2014届本科生毕业设计

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目 录

摘要 ........................................................................................................................ 1

Abstract .................................................................................................................. 2

1 概述 .................................................................................................................. 1

1.1课题背景 .................................................................................................. 1

1.2我国道路现状与发展规划 ........................................................................ 1

1.2.1道路运输的地位与作用 ................................................................. 1

1.2.2我国道路的现状 ............................................................................ 1

1.2.3我国道路的发展规划 .................................................................... 2

2 工程项目可行性研究 ........................................................................................ 3

2.1工程建设项目的背景与意义 .................................................................... 3

2.2工程项目可行性论证 ............................................................................... 3

3 沿线自然状况与道路等级的确定 ..................................................................... 4

3.1沿线地形地质等自然条件 ........................................................................ 4

3.1.1自然地理概况................................................................................ 4

3.1.2气象资料 ....................................................................................... 4

3.1.3地震设防烈度................................................................................ 4

3.1.4公路自然区划................................................................................ 4

3.1.5工程、水文地质 ............................................................................ 4

3.2设计原则 .................................................................................................. 5

3.3公路等级的确定 ....................................................................................... 5

3.3.1道路等级论证................................................................................ 5 河南理工大学2014届本科生毕业设计

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3.3.2道路技术标准论证 ........................................................................ 6

3.4技术指标的运用情况 ............................................................................... 7

4 路线平面设计 ................................................................................................... 9

4.1路线设计总体原则 ................................................................................... 9

4.2选线的一般步骤 ....................................................................................... 9

4.3平面线设计 .............................................................................................. 9

4.3.1平面设计的一般原则 .................................................................... 9

4.3.2平面线形三要素 .......................................................................... 10

4.4路线布设情况 ......................................................................................... 12

4.5正线与比选线基本情况对比 .................................................................. 12

4.6平曲线计算 ............................................................................................ 14

5 纵断面设计 ..................................................................................................... 17

5.1纵断面设计原则 ..................................................................................... 17