最新一级公路设计

一级公路设计

摘要

本设计为河南省许昌市至漯河市一级公路K0+000—K3+010.468标段设计。依据道路的功能将公路定位为平原一级公路，设计时速为80Km/h，设计年限为20年，路面结构设计为沥青路面。根据交通量和交通增长量，将公路确定为双向4车道公路。主要设计包括：路线设计、路基排水设计、路面结构设计和挡土墙设计。

根据地形图特点和选线原则，经过比选确定最佳路线。标段全长3010.468m，路线中间设二个交点，圆曲线半径分别为600m，800m，竖曲线设3个交点，半径分别为12000m、7000m、5000m。在此基础上进行横断面设计和路基排水设计，并经过计算和对比确定路面结构层和结构层厚度。在高填方路段进行挡土墙设计，通过计算确定挡土墙断面形式和尺寸。

整个设计在技术经济论证分析的基础上完成了平纵横断面设计，路基和路面结构设计，专题挡土墙的设计计算，并进行了道路概预算，完成了整个设计任务。

关键词：一级公路选线路基路面挡土墙

Abstract

The design is a first-class highway design for the K0 +000- K3 +010.468 tenders of the road from Xuchang City, Henan Province, to Luohe City. Depending on the functionality of the road, the road was positioned as a first class highway located in plain, the design speed of which is 80Km/h and the design life of which is 20 years. The design pavement structure is asphalt pavement. According to the traffic and traffic growth volume, the highway was identified as a four-lane highway. Highway structure design is asphalt pavement. The main design includes： route design, subgrade drainage design, pavement and drainage design

and retaining wall design.

According to the features of topographic and the principle of line selection, I determined the best route after comparison. Full length of the tender is 3010.468m,within it, there are two intersections located in the horizontal curve, the radius of which are 600m and 800m respectively ,and there are three intersections located in the vertical curve, the radius of which are 12000m, 7000m and 5000m, respectively. Cross-sectional design and subgrade drainage design were based on it, and the pavement design was determined through calculated and compared to determine pavement layer and the thickness of structure. Moreover, the retaining wall in high fill sections was determined by calculating the retaining wall section forms and sizes.

On the basis of technical and economic feasibility analysis, the design have completed draphic design, Profile design, cross-sectional design, subgrade and pavement structural design, retaining wall design and budget estimate. In short, the design have completed all the task.

Keywords：First class highway Route design Subgrade Pavement structure

Retaining wall

目录

Abstract ...................................................................................................................................... I 第一章绪论. 0

1.1 选题的目的和意义 0

1.2 设计主要任务 0

第二章设计说明 (2)

2.1 设计内容 (2)

2.2 沿线地理条件与地质资料 (2)

2.3 气候条件 (2)

2.4 交通量资料和车道数确定 (2)

2.5 确定设计时速 (3)

2.6 确定公路技术指标 (3)

第三章路线方案拟定和比选 (5)

3.1 选线原则 (5)

3.2 平原区选线要点和考虑 (5)

3.2.1 正确处理道路与农业的关系 (5)

3.2.2 合理考虑路线与城镇的联系 (6)

3.2.3 正确处理新、旧路的关系 (6)

3.2.4 处理好路线与桥位的关系 (6)

3.2.5 尽量靠近建筑材料产地 (7)

3.3 路线方案拟定与比选 (7)

第四章平面设计 (9)

4.1 平面设计基本原则 (9)

4.2 平面线形设计元素选取 (10)

4.2.1 直线 (10)

4.2.2 圆曲线 (11)

4.2.3 缓和曲线 (13)

4.5 平面元素计算结果 (14)