本科毕业设计论文--设计速度60kmh二级公路

摘要

辽宁省滨海公路工程CE段全长14.767km。公路所经地区为滨海平原区，全线采用双向双车道二级公路标准设计，路基宽度10米，设计行车时速60km/h。

全线设平曲线14个，线形组合均采用基本型，平曲线最小半径270.028m；设竖曲线29个，其中最大竖曲线半径11207.593（m)，最小竖曲线半径2000（m)，最小纵坡0.301%。路线采用的技术指标可以较好的满足该二级公路的通行要求，达到二级服务水平。由于路线跨越河流、风景区，故设大桥三座、挡土墙一道。同时，综合考虑地形、土质和水量等完成了道路排水系统的设计，路基防护主要采用挡土墙和草皮防护，路面设计为沥青混凝土路面。

本设计重视环境保护，尽量使道路与周围环境协调统一。

设计中采用多种工程软件进行精确计算来优化设计，设计图纸采用AUTOCAD及Roadleader软件绘制。

关键词：二级公路；挡土墙；沥青路面；预应力T型梁桥桥；边坡防护。

ABSTRACT

The total length of Liaoning province coastal road CE section is 14.767 km. The area which the road crosses is coastal areas.And a technical standard of double-way two-lane Secondary road is adopted in the design. The design speed is 60km/h. The width of the subgrade is 10 meters.

The basic type of horizontal curve is adopted in this design for all the 14 horizontal curves and its minimum radius is 270.028m. Two vertical curves are designed and its minimum radius is 2000m and 2000m for convex vertical curve and concave vertical curve respectively. The minimum longitudinal grade is 0.301% which meet the drainage. All of the adopted technical standard can meet the B road with the second-class service level. 3 bridge s are designed, which are three large bridges are designed.Different kind of drainage facilities are used in the drainage design. Gravity retaining wall and Mortar rubble are used for the slope protection. The asphalt concrete is used on pavements in this road.

The concept of environmental protection is carried through in all the design to make the road consistent with the nature.

Different kinds of professional software are used to optimum the design result. The construction documents are completed by AUTOCAD and Roadleader.

Key words: two highway; retaining wall; asphalt pavement; prestressed T girder bridge; slope protection.

目录

第1章绪论 (7)

1.1 设计资料 (7)

1.1.1气候特征 (7)

1.1.2地形与地貌 (7)

1.1.3地质与土质 (7)

1.1.4植被覆盖与作物等情况 (8)

1.2 道路等级的确定 (8)

1.3 可行性分析及总体设计原则 (8)

1.3.1可行性分析 (8)

1.3.2总体设计原则 (9)

第2章公路选线 (10)

2.1 选线原则 (10)

2.2 线形与技术标准 (10)

2.3 路线与桥位的配合 (11)

2.4 路线设计方案 (11)

2.4.1路线设计 (11)

2.4.2方案比较 (13)

2.4.3方案选择 (14)

第3章公路平面线形设计 (15)

3.1 概述 (15)

3.2 平面线形设计原则 (15)

3.3 平曲线要素确定与计算 (15)

3.3.1平曲线参数 (15)

3.3.2平曲线要素计算 (15)

第四章纵断面设计 (21)

4.1 纵断面设计概述 (21)

4.1.1平纵线形的协调 (22)

4.1.2竖曲线作用 (22)

4.1.3竖曲线计算 (23)

第五章横断面设计 (26)

5.1 横断面布置 (26)

5.1.1横坡 (26)

5.1.2路基边坡 (26)

5.2 平曲线加宽及超高计算 (27)

5.2.1平曲线加宽 (27)

5.2.2平曲线超高 (27)

5.3 填料的选择与压实标准 (30)

5.3.1填料的选择 (30)

5.3.2压实标准 (31)

5.4 路基设计 (32)

5.4.1路基的干湿类型 (32)

5.4.2路基类型 (32)

5.5 护坡道和用地范围 (34)

5.6 挡土墙的布置 (35)

5.6.1挡土墙作用 (35)

5.6.2挡土墙的平面布置和适用范围 (35)

5.7 路基施工要求及注意事项 (42)

5.7.1一般路基施工要求及注意事项 (42)

5.7.2构造物处路基施工要求 (42)

5.8 土石方数量计算与调配 (43)

5.8.1横断面面积的计算 (43)

5.8.2路基土石方数量的计算 (43)

5.8.3土石方调配 (43)

第六章路面结构设计 (45)