1、 装 订 线 摘 要 设计的主要内容为广西柳州地区新建公路综合设计。公路等级为二级，功能定位 为集散公路，双向二车道，设计速度为 60km/h，设计部分的公路全长为 3.2km。全程 共设六处涵洞、一处通道和一处平面交叉。在设计前对交通量进行了分析，查找结合 当地的地质地貌、 经济文化等各种设计资料以及各相应的技术规范， 并考虑经济因素， 确定了公路的等级、 各种设计指标以及设计所需要的各种参数。 而后根据给定的资料， 陆续进行路线方案选定、平面设计、纵断面设计、横断面设计、路基路面设计、排水 设计以及涵洞与通道设计。在平面设计中进行平曲线设计，计算得各平曲线的曲线要 素。在纵断面设计中确定了
2、变坡点及竖曲线位置和参数。横断面设计中确定了横断面 形式，并进行了加宽设计、超高设计、视距检查以及土石方量计算。路基设计包含了 路基断面设计以及边坡的支挡防护设计， 确定了路基的类型和构造、 路基防护的形式。 路面设计先选定路面类型，而后通过交通分析，计算各设计所需参数以确定路面结构 及各结构层厚度和材料。排水设计包括路基排水与路面排水的综合设计，确定排水设 施的选用类型和结构尺寸。而且，对涵洞、通道以及平面交叉亦均进行设计说明。除 此之外，在整个设计过程中，同时给出各项相应图表。 关键词：二级公路；路线；路基路面；排水。 装 订 线 Abstract The main content of
3、the subject is to design a new road of Liuzhou area, Guangxi province. Classified the secondary grade with distribution function, this road has two-way two lanes and a designed speed of 60km/h. It is 3.2km generally, concluding six culverts, one channel and one at-grade intersection. Before the desi
4、gn, traffic volume analysis and the local geological, economic and cultural features and other design information or specifications are taken into account to determine the road level, as well as the economic and the corresponding technical factors. According to the given data, the designs of alignme
5、nt, profile, cross section, subgrade, pavement, drainage, culvert and other parts are completed. Alignment design consists of horizontal curve elements determination. Profile Design identifies the point of gradient change and the vertical curve locations and parameters. Cross section design includes
6、 identifications of the form of section, super elevation and widen. Subgade design is mainly composed of the type and construction determinations of embankment. Through the traffic analysis, pavement design with the selected type, the parameters are calculated. Then the thickness of pavement structure and materials are identified. Drainage design has two parts, subgrade and pavement. Moreover,
