论文总字数：21853字

摘 要

本次设计的道路位于安徽省宣城南环线与现状宣泾线交叉处，此地气候属于亚热带湿润季风气候类型，此设计为一级公路，计算行车速度为 80km/h。本次路线起终点桩号分别为 K10 000、K15 500，路面设计计算中，基层拟采用半刚性材料，面层采用沥青混凝土进行设计。平面设计良好，各项指标均满足规范要求，线形较好，行车舒适。纵断面设计中有七个变坡点，每个变坡点的各项指标均满足规范要求。

本次主要设计内容包括：

关键词：一级公路；平面设计；纵断面设计；横断面设计；路基设计；路面结构设计

Construction drawing design of S322 Xuanjing Road Reconstruction Project (K10 000-K15 500) in Anhui Province

Abstract

The road designed in this project is located at the intersection of Xuancheng South Ring Road and the current Xuanjing Line in Anhui Province. The climate here belongs to the subtropical humid monsoon climate type. This design is a first-level road with a calculated driving speed of 80km/h. The starting and ending pile numbers of this route are K10 000 and K15 500 respectively. In the pavement design and calculation, semi-rigid materials will be used for the base layer, and asphalt concrete will be used for the surface layer. Good graphic design, all indicators meet the standard requirements, good linear shape, driving comfort. There are seven change points in the longitudinal section design, and each index of each change point meets the requirements of the code.

The main design content includes: graphic design, road profile design, road cross-section design, roadbed design, pavement structure design.

Key words: first-class highway; Graphic design; Vertical section design; Cross section design; Subgrade design; Pavement structure design

目录

摘要……………………………………………………………………………………………………………Ⅰ

Abstract………………………………………………………………………………………………………Ⅱ

1. 绪 论………………………………………………………………………………………………1

1.1修建该公路的目的和意义…………………………………………………………………………1

1.2公路所在地自然情况………………………………………………………………………………1

1.3主要技术指标的确定和论证………………………………………………………………………1

第二章 路线设计……………………………………………………………………………………………3

2.1确定、比较和决定路线……………………………………………………………………………3

2.1.1方案选择的要点……………………………………………………………………………3

2.1.2.路线方案的拟定……………………………………………………………………………3

2.2平面设计……………………………………………………………………………………………4

2.2.1直线曲线及转角计算………………………………………………………………………4

2.2.2平曲线要素计算……………………………………………………………………………5

2.3纵断面设计…………………………………………………………………………………………8

2.3.1确定纵断面设计参数………………………………………………………………………8

2.3.2竖曲线要素计算……………………………………………………………………………9

2.2.3设计高程计算………………………………………………………………………………10

第三章 路基设计……………………………………………………………………………………………11

3.1路基横断面设计……………………………………………………………………………………11

3.1.1公路路基横断面类型………………………………………………………………………11

3.1.2横断面高加宽设计…………………………………………………………………………12

3.2路基土石方计算和调配……………………………………………………………………………14

3.2.1土石方数量…………………………………………………………………………………14

3.2.2土石方处理…………………………………………………………………………………15

3.3特殊路基处理………………………………………………………………………………………15

第四章 路面设计……………………………………………………………………………………………16

4.1设计依据……………………………………………………………………………………………16

4.2沥青路面结构数量…………………………………………………………………………………16

4.2.1交通量数据…………………………………………………………………………………16

4.2.2标准轴载及轴载当量换算…………………………………………………………………19

4.2.3路面结构设计与验算………………………………………………………………………21

4.2.4路面结构确定………………………………………………………………………………25

致谢……………………………………………………………………………………………………………26

参考文献………………………………………………………………………………………………………27

附录……………………………………………………………………………………………………………28

第一章 绪 论

1.1 修建该公路目的和意义

S322宣泾路起于宣城南环线与现状宣泾线交叉处，基本沿现有322省道方向，经金坝、杨柳、高桥、柿木铺、琴溪、双坑等集镇，与拟改建的G205共线一段后，至终点上坊，全长约43km。

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