道路工程毕业论文
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I / 76I 摘 要 本设计是都江堰至大邑段一级公路设计。设计部分的公路全长2928.063m,设计车速80km/h,双向四车道,有3个平曲线转角,3个竖曲线变坡点,两侧土路肩为0.75m,硬路肩为2.5m。 在本设计过程中,主要包括以下几方面的设计: 确定道路等级:依据相应技术规范,进行交通量分析,确定公路的等级以及设计需要的各种参数。 道路选线及线形设计:在地形图上选择两条合理的路线,分别进行平面、横断面、纵断面三方面的设计,比选确定符合技术、经济指标的最佳方案。 路基设计:主要内容是确定路基的边坡形状及坡度,选择合适的填料及压实标准。 排水设计:主要解决边沟和排水设施的形状和尺寸。 路面设计:通过计算车辆轴载设计两个路面方案进行比选,确定合理方案。 专题设计:挡土墙设计。 概预算部分:通过相关资料计算该公路造价。 关键词:选线;路线设计;路基;路面;挡土墙 II / 76II
Abstract The design is mainly a highway engineering design from DuJiangYan to DaYi section , the length of this road is 2928.063m,the design of the speed is 80km/h, it has 3 plane curve corner, 3 vertical curve, unpaved shoulder is 0.75 m, hard road shoulder is 2.5 m. The main aspects of the design of this process are like these: Ensure the grade of this road: The analysis of traffic, search corresponding technical specifications, to determine the levels of the road and the parameters of the design needed. Choose the road route and make linear design: Choose two right route in the topographic map, Then to design the layout, cross-sectional and longitudinal of the two routes in order to choose the best one. Which meets shun fitness requirements ,economy etc. Roadbed design: The main content of the roadbed design is to determine the roadbed slope form and it’s width, then to choose the appropriate packing and compacted standards. Drainage design: The design is mainly to determine the shape and the size of drainage facilities. Pavement design: Design two pavement program in order to selection based on the calculation of the axle load. The to determine the rational program. Special subject design: Retaining wall. Budget part: Mainly according to related data , calculating the cost of the road. Keywords: route route design subgrade road surface retaining wall III / 76III
目录 第一章 概 述 .............................................................................................................. 7 1.1 工程意义 .............................................................................................................. 7 1.2 设计资料和依据.................................................................................................. 7 1.2.1路线概况 ......................................................................................................................... 7 1.2.2气候特点 ......................................................................................................................... 7 1.2.3降水量及地下水类型 ..................................................................................................... 7 1.2.4地质与土质 ..................................................................................................................... 7 1.2.5植被覆盖及作物等概况 ................................................................................................. 7 1.2.6交通量资料 ..................................................................................................................... 8 1.3 设计依据 .............................................................................................................. 8 第二章 道路路线设计 .................................................................................................. 9 2.1 道路技术等级确定.............................................................................................. 9 2.2 路线方案的拟定与比选 ..................................................................................... 9 2.2.1平面设计技术指标的确定 ............................................................................................. 9 2.2.2路线方案拟定与比选 .................................................................................................... 11 2.3 道路技术标准确定............................................................................................ 12 第三章 道路平面设计 ................................................................................................ 14 3.1 平面线形及设计一般原则 ............................................................................... 14 3.2 圆曲线计算 ........................................................................................................ 14 3.3 坐标计算 ............................................................................................................ 16 3.3.1路线转角、交点间距、曲线要素及主点坐标表 ....................................................... 16 3.3.2直线上中桩坐标计算 ................................................................................................... 17 3.3.3单曲线内中桩坐标计算 ............................................................................................... 19 第四章 道路纵断面设计 .......................................................................................... 23