一级公路设计
摘要
around怎么读
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.
internal是什么意思According to the features of topographic and the principle of line lection, I determined the best route after comparison. Full length of the tender is 3010.468m,within it, there are two interctions located in the horizontal curve, the radius of which are 600m and 800m respectively ,and there are three interctions located in the vertical curve, the radius of which are 12000m, 7000m and 5000m, respectively. Cross-ctional design and subgrade drainage design were bad 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 ctions was determined by calculating the retaining wall ction forms and sizes.
On the basis of technical and economic feasibility analysis, the design have completed draphic design, Profile design, cross-ctional 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)growthrate
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)
leave the door open4.2 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)
4.5.1 有缓和曲线的圆曲线要素计算公式 (14)
4.5.2 逐桩坐标计算 (15)
第五章纵断面设计 (22)仪仗队的意思
5.1 纵坡及坡长设计 (22)
5.1.1 最大纵坡 (22)
5.1.2 缓和坡段 (23)
singlehop5.1.3 坡长限制 (23)
5.1.4 最小纵坡 (24)
5.1.5 平均纵坡 (24)
5.1.6 合成坡度 (24)wear的过去分词
5.2 平纵线形组合 (25)
5.2.1 组合设计原则 (25)
5.2.2 组合设计方法 (25)
5.3 竖曲线 (26)
5.3.1 竖曲线最小半径 (27)
5.3.2 纵断面设计要点及计算 (27)
5.3.3 竖曲线要素计算结果 (28)
5.5.4 设计高程计算 (31)
第六章横断面设计 (33)
6.1 横断面的组成及类型 (33)
6.2 行车道及路肩、路拱 (34)
6.2.1 行车道宽度的确定 (34)好好学习天天向上英语
6.2.2 路肩 (34)
6.2.3 路拱横坡度 (35)
6.2.4 中间带 (36)
6.3 平曲线加宽 (36)
6.4 平曲线超高设计计算 (37)
6.4.1 超高及其作用 (37)payroll
新课标英语听力下载6.4.2 超高值的计算 (37)
6.4.3 超高过渡方式 (38)
