本科毕业设计说明书
江西某高速公路K3～K6段综合设计
DESIGN OF A HIGHWAY IN JIANGXI IN SECTION
OF K3～K6
学院（部）： 土木建筑学院 专业班级： 土木xx-x 学生姓名： 吴某某 指导教师： 王某某（副教授）
2014 年 5 月 30 日
安徽理工大学毕业设计
江西某高速公路设计
摘要
本设计是位于江西境内的高速公路设计，本段是从K2+800～K5+600。该段长度是2800米，起点标高是52.05米，终点标高是36.72米，处在平原微丘地区。采用的是双向六车道，设计时速是120km/h，设计为沥青混凝土路面。
本设计主要是分为七部分，分别是：一、主线平面设计包括选线设计和平曲线要素的验算；二、纵断面设计包括纵断面的拉坡和竖曲线验算；三、横断面设计包括超高加宽的设置以及土石方计算；四、公路路基设计包括路基稳定性验算；五、公路路面结构设计；六、支挡构造物设置主要是对设置的挡土墙进行验算；七、排水系统设计；八、施工组织设计。
关键词：路线设计；路基设计；路面结构设计；支挡构造物；排水设计
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安徽理工大学毕业设计
DESIGN OF A HIGHWAY IN JIANGXI IN SECTION
OF K3~K6
ABSTRACT
The design is the design of Freeway in Jiangxi Province, This design is from K2+800～K5+600 segment. The length is 2800 meters，starting elevation is 52.05 meters, 36.72 meters elevation is the end, in the area of hill plain. The road using the two-way six lane, design speed per hour is 120km/h, designed for asphalt concrete pavement.
This design is mainly divided into eight parts ，which is，The first is the master line plane design includes the calculation of line selection design and curve elements; The second is longitudinal section design including longitudinal pulling vertical curve design; The third is the cross-sectional design including super broadening settings and earthwork calculation;The forth is the highway subgrade design includes checking the stability of the subgrade;The fifth is the design of highway pavement structure; The sixth is Retaining structure of retaining wall design, The seventh is the design of drainage system；the eighth is the design of construction management.
KEYWARDS：route selection；roadbed design；pavement design ；the design of drainage system.
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安徽理工大学毕业设计
目录
摘要 ............................................................................................................................................. I 摘要（英文） ............................................................................................................................ II 1 工程概述 ................................................................................................................................ 1 1.1地形条件 ......................................................................................................................... 1 1.2车道确定 ......................................................................................................................... 1 1.3相关数据 ......................................................................................................................... 2 2 公路路线设计 ........................................................................................................................ 4 2.1选线原则 ......................................................................................................................... 4 2.2路线平面线形设计 ......................................................................................................... 4 2.2.1平曲线设计要求 ...................................................................................................... 4 2.2.2平曲线要素计算 ...................................................................................................... 5 2.3纵断面设计 ..................................................................................................................... 7 2.3.1纵断面设计原则 ...................................................................................................... 8 2.3.2纵坡设计设计要求 .................................................................................................. 8 2.3.3纵断面设计步骤 ...................................................................................................... 9 2.3.4本路段设计 .............................................................................................................. 9 2.3.5竖曲线要素计算 .................................................................................................... 10 2.4横断面设计 ................................................................................................................... 12 2.4.1横断面几何尺寸 .................................................................................................... 13 2.4.2道路的加宽 ............................................................................................................ 13 2.4.3曲线的超高 ............................................................................................................ 15 2.4.4超高计算 ................................................................................................................ 15 2.4.5路基土石方计算及调配 ........................................................................................ 18 2.4.6土石调配 ................................................................................................................ 18 2.4.7土方调配的方法 .................................................................................................... 19 3 路基稳定性验算 .................................................................................................................. 20 3.1路基稳定性验算 ........................................................................................................... 20 3.1.1高路堤稳定性验算 ................................................................................................ 20 3.1.2路堑稳定分析 ........................................................................................................ 22 3.2边坡防护和加固 ........................................................................................................... 23
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安徽理工大学毕业设计
3.2.1路堤边坡防护 ........................................................................................................ 23 3.2.2路堑边坡防护 ........................................................................................................ 23 4 道路路面设计 ...................................................................................................................... 24 4.1 路面的作用及要求 ....................................................................................................... 24 4.1.1路面介绍 ................................................................................................................ 24 4.2 路面结构设计 ............................................................................................................... 24 4.2.1沥青路面结构层厚度设计原则 ............................................................................ 24 4.2.2拟定路面结构组合 ................................................................................................ 24 4.2.3标准轴及设计交通量 ............................................................................................ 26 4.2.4设计指标的确定 .................................................................................................... 29 4.2.5确定土基回弹模量 ................................................................................................ 30 4.2.6 HPDS2006软件计算结果 ...................................................................................... 30 4.2.7方案选择 ................................................................................................................ 32 5 挡土墙设计 .......................................................................................................................... 33 5.1挡墙介绍 ....................................................................................................................... 33 5.1.1挡土墙的用途 ........................................................................................................ 33 5.1.2重力式挡土墙设计的要求 .................................................................................... 33 5.2设计资料 ....................................................................................................................... 33 5.3挡墙的形式设置 ........................................................................................................... 34 5.4挡墙验算 ....................................................................................................................... 34 5.4.1车辆荷载的换算 .................................................................................................... 34 5.4.2破裂角?的计算 ..................................................................................................... 35 5.4.3土压力计算 ............................................................................................................ 37 5.4.4稳定性验算 ............................................................................................................ 38 5.4.5抗倾覆稳定验算 .................................................................................................... 38 5.4.6基底应力及合力偏心距验算 ................................................................................ 39 5.4.7墙身截面强度验算 ................................................................................................ 39 5.5挡土墙设置伸缩缝及泄水孔设置 ............................................................................... 40 6 道路排水设计 ...................................................................................................................... 41 6.1气候与地质条件 ........................................................................................................... 41 6.2路基排水的目的和要求 ............................................................................................... 41 6.3路基排水的设备 ........................................................................................................... 41
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