二级公路工程毕业设计

天水至麦积山二级公路

设

计

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院 系：土木工程学院

专业班级：交通土建01-2班

姓 名：彭俊杰

学 号：30号

指导教师：李壮文

日 期：2005.6 彭俊杰：天水至麦积山二级公路设计

2 天水至麦积山二级公路设计

摘要

本设计为天水至麦积山二级公路设计，该道路路线全长约2600m，其经过地区主要为山岭重丘，要完成的内容主要有道路的选线、平纵面设计以及横断面设计，路基路面结构设计。通过对远景交通量的推算确定了道路的等级以及道路设计的各个技术指标，同时通过对当地地形、气候、水文、地质等状况的深入调查,为公路路线方案的比选准备了原始材料，确定了线路的平面位置。并且本设计对方案进一步细化，对路线的平面和纵断面进行了综合分析，根据技术标准及当地实际情况确定了路基宽度、高度及边坡坡度并且对路面材料、横断面布置、曲线超高及加宽的设置做了精心设计。

在对主体工程（路基、路面工程）认真设计的基础上，本设计对道路工程的附属设施进行了周密的布置，先后进行了排水、边坡、护坡、挡土墙及涵洞的优化设计，同时在方案比选的过程中认真编制了工程概预算，强调了环保的重要性，为工程的进一步设计与施工打下了坚实的基础。

本设计还总结了自己的心得，这是四年来学习的一次很好的总结，能够将理论和实际有机的结合起来，为今后的工作与深造打下了坚实基础。

关键词：

圆曲线；路基；路面；排水；挡土墙；涵洞

河南理工大学本科毕业设计

3 The design of classⅡhighway from Tianshui to Maijishan

Abstract

This design names the Tianshui-Maijishan class Ⅱ design of highway, the total length about

2600m of this road of routes, it is mainly a heavy mound in the mountain ridge through the area,

the content that will be finished has selecting line , flat vertical designs and cross section to be

designed of a road mainly, road surface structural design of road bed. calculate the application

which has confirmed the class of highway and technical standard according to the volume of

traffic, pass such the investigating further of the state as local topography , climate , hydrology ,

geology ,etc. correctly at the same time , for selecting to prepare the firsthand material of scheme

of the highway. Fix up after fixing the level of the circuit. And it is thinning further to the scheme

to originally design ,has done the rational choice to the level of the circuit and vertical section,

have confirmed the width of road bed according to the technical standard and local actual

conditions , and slope and material , cross section assign, curve superelevation and establishment

that widenned design meticulously to road surface highly.

On the basis of designing to the major project (road bed , road surface project )

conscientiously, have originally designed and carried on the careful arrangement to the affiliated

facility of road engineering, optimization design of successively draining off water , domatic ,

bank protection , retaining wall and culvert, worked out project preliminary budget

conscientiously than the course that is selected in the scheme at the same time , have emphasize

the importance of environmental protection, has laid a solid foundation for the further design and

construction of the project.

Having originally designed and also summarized one's own gains, this is a very good

summary that has been studied over the past four years, can lay the solid foundation theory and

reality conbining together organic for work and pursuit of advanced studies in the future.

Key words：

round contours；road bed；road surface；drain off water；retaining wall；culvert

彭俊杰：天水至麦积山二级公路设计

4 前言

公路是国民经济的大动脉，是国家交通基础设施。我国经过近20年的努力，高速公路建设已从无到有，取得了丰硕成果。据不完全统计，全国高速公路通车里程超过2.5万公里，创下位居世界第二的新记录。

国家的综合运输系统是由铁路、公路、水运、航空和管道五种运输方式组成的，这些运输方式在技术经济上各具特点。其中公路运输机动灵活可以深入到城市、工厂、矿山、村庄，可以实现门到门的运输，他能迅速分散货物，避免中转重复装卸，批量不受限制，时间不受约束，是我国综合运输体系中最活跃的一种运输方式。改革开放以来，随着社会主义商品经济和乡镇企业的兴起，尤其是近年来西部大开发战略的实施，公路运输已经显示出了其它交通方式所不能具有的巨大优势。“要想富，先修路”、“公路通，百业兴”反映了人们尤其是偏远山区人们的深切感受。

该地区位于山岭重丘区，地处西部，随着近年来当地经济的迅速发展，现有交通条件已成为严重制约经济发展的重要因素，随着西部大开发战略的提出，国家基础设施建设逐步向西部地区转移。当地领导抓住大好时机，结合本地实际情况，拟修建一条连接天水与麦积山的二级公路。其目的与意义如下：

(1) 麦积山属中国著名风景名胜区之一，为了开发其旅游资源而拟建一条景区专线；

(2) 该公路不仅打通了山区与外部世界的联系，更使人们进一步了解了甘肃，了解了天水；

(3) 为了响应国家号召，实施西部大开发战略而投资兴建该条公路；

(4) 为提高当地居民生活水平创造了有利条件，为实现人民生活的全面小康做出了贡献。

作为本次设计的设计人员，我坚决贯彻执行党和政府关于交通业基本建设工作的各项方针、政策，设计编制的内容完全符合公路工程各项技术标准，本着以学为主，实事求是的科学态度向我的大学生涯提交一份圆满的答卷。

河南理工大学本科毕业设计

5 目 录

1 概述„„„„„„„„„„„„„„„„„„„„„„„„„„„„7

1.1 工程概况 „„„„„„„„„„„„„„„„„„„„„„„7

1.2 交通资料分析 „„„„„„„„„„„„„„„„„„„„„7

2 平面设计„„„„„„„„„„„„„„„„„„„„„„„„„„9

2.1 拟定方案 „„„„„„„„„„„„„„„„„„„„„„„9

2.2 平曲线计算 „„„„„„„„„„„„„„„„„„„„„„10

2.3 超高和加宽计算 „„„„„„„„„„„„„„„„„„„„14

3 纵断面设计„„„„„„„„„„„„„„„„„„„„„„„„„20

3.1 纵断面线形设计 „„„„„„„„„„„„„„„„„„„„20

3.2 竖曲线设计 „„„„„„„„„„„„„„„„„„„„„„20

4 路基设计„„„„„„„„„„„„„„„„„„„„„„„„„„24

4.1 设计原则 „„„„„„„„„„„„„„„„„„„„„„„24

4.2 横断面设计 „„„„„„„„„„„„„„„„„„„„„„24

4.3 路堤填筑设计 „„„„„„„„„„„„„„„„„„„„„25

4.4 路堑开挖设计 „„„„„„„„„„„„„„„„„„„„„25

4.5 路拱形成和边坡修整设计 „„„„„„„„„„„„„„„„25

4.6 公路排水设计 „„„„„„„„„„„„„„„„„„„„„26

5 路面设计„„„„„„„„„„„„„„„„„„„„„„„„„„28

5.1 路面原始设计条件 „„„„„„„„„„„„„„„„„„„28

5.2 标准轴载和轴载换算 „„„„„„„„„„„„„„„„„„28

5.3 土基回弹模量值的确定 „„„„„„„„„„„„„„„„„29