摘 要

关键词：路线设计；路基设计；桥涵；挡土墙；路面设计；预算

本次设计的主要内容包括：道路选线、路线平面设计、路线纵断面设计、路基横断面设计、小桥设计、涵洞设计、挡土墙设计、路面结构设计、专题特色设计、土石方调配、施工图预算。设计中需要全面考虑各方因素，设计方案合理，计算正确，图纸清晰完整，说明书表述清楚，内容完整等。

本次设计路段为K0 000~K3 431.536段，全线共设计有1座小桥，4个涵洞；公路里程 K2 394.675 ~K2 462.257段设有一段衡重式路肩墙；路面为沥青混凝土路面，包括干燥和中湿两种路面类型；专题特色设计采用土工网植草边坡防护路线全长3431.536米，设计速度为80km/h。

Construction drawing design of the newly-built grade one highway in Shanxi Province

Abstract

In order to consolidate professional knowledge, practice professional skills, and exercise the ability to solve practical problems, I chose the Construction drawing design of the newly-built grade one highway in Sanxi Province as my graduation design, which is an evidence that I am a qualified civil engineering graduate.

The main contents of this design include: road route selection, road plane design, road vertical design, subgrade cross section design, bridge design, culvert design, retaining wall design, pavement structure design, special features design, earthwork allocation, and construction drawing budget. The design scheme should be reasonable, the calculation should be correct, the drawings should be clear and complete, the instructions should be clear and the contents should be complete.

The road is K0 000~K3431.536, with a total length of 3431.536 meters. The design speed is 80 km/h.There are a total of 6 plane intersections, the minimum radius is 500 meters, the maximum radius Is 800 meters; there are 1 points of slope change, the minimum longitudinal gradient is 1.011% and the maximum one is 1.332%, the minimum radius is 3431.536 meters, and the maximum one is 20000 meters; the whole line is designed with 1 bridge and 4 culverts; there is a section of weighing shoulder wall from K2 394.675 to K2 462.257; the special feature design is slope protection of grass planting with geotechnical network.

Keywords：Route design；Subgrade design；Bridge and culvert; Retaining wall; Pavement design; Budget

目录

1绪论----------------------------------------------------------------------3

1.1可行性研究---------------------------------------------------------------3

1.2沿线自然地理情况---------------------------------------------------------3

1.2.1地形地貌-------------------------------------------------------------3

1.2.2气候条件-------------------------------------------------------------3

1.2.3水文条件-------------------------------------------------------------4

1.2.4地质条件-------------------------------------------------------------5

1.2.5地震情况-------------------------------------------------------------5

1.2.6沿线筑路材料情况-----------------------------------------------------6

2路线平面设计---------------------------------------------7

2.1公路等级确定-------------------------------------------------------------7

2.2设计行车速度确定---------------------------------------------------------7

2.3选线---------------------------------------------------------------------7

2.3.1公路选线的一般原则---------------------------------------------------7

2.3.2选线的步骤和方法-----------------------------------------------------8

2.4平面线形设计-------------------------------------------------------------8

2.4.1平面线形设计原则-----------------------------------------------------8

2.4.2平曲线要素值的确定---------------------------------------------------9

3纵断面设计----------------------------------------------12

3.1纵断面设计原则----------------------------------------------------------12

3.2纵断面设计的要求--------------------------------------------------------12

3.3纵断面设计的方法步骤----------------------------------------------------13

3.4竖曲线设计--------------------------------------------------------------13

3.4.1竖曲线要素值的规定--------------------------------------------------13

3.4.2竖曲线要素值的确定--------------------------------------------------14

3.4.3几何元素计算--------------------------------------------------------15

3.5方案比选----------------------------------------------------------------15

4路基与横断面设计----------------------------------------17

4.1路基各部分尺寸----------------------------------------------------------17

4.2路基干湿类型------------------------------------------------------------17

4.3路基最小填土高度--------------------------------------------------------17

4.4路拱的确定--------------------------------------------------------------17

4.5平曲线加宽及过渡--------------------------------------------------------18

4.6超高值的计算及超高过渡方式的确定----------------------------------------18

4.6.1 最大超高率的确定---------------------------------------------------18

4.6.2 超高过渡方式-------------------------------------------------------19

4.6.3超高值的计算--------------------------------------------------------20

5 路基防护工程设计---------------------------------------25

5.1 坡面防护--------------------------------------------------------------25

5.2挡土墙设计-------------------------------------------------------------25

5.2.1 墙身---------------------------------------------------------------26

5.2.2 基础---------------------------------------------------------------26

5.2.3 排水设施-----------------------------------------------------------26

5.2.4 沉降缝和伸缩缝-----------------------------------------------------27

5.2.5 挡土墙设计计算-----------------------------------------------------28

1绪论

可行性研究

此路段于山西西南部。山西其他大部分中部地区之间的通行时间将大大缩短，山西与南京之间的旅行时间将缩短到13小时。它在中国交通发展战略中占有重要地位。该项目的结构对于发展国家主要高速公路网络的布局，促进东南部发达地区和西北部欠发达地区之间的经济往来，增强经济互补性以及路边地区的经济和社会协调发展至关重要。

沿线自然地理特征

1.2.1地形地貌

该路段位于山西省西南部，具有典型的堆积地貌。阶地后缘标高约400~520m，前缘地面标高约400~470m。在西辛封至岭里段地面标高大致为399~405m。在中间地段一线发育有大型冲沟14条，切割深度约20~48m，冲沟走向均呈南北向。在路线终点的大前村一带，地面标高约390~400m。