毕业设计---一级公路的设计

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1、 I 摘 要 本设计是吉林省舒兰市凤凰乡至东小乡段一级公路的设计，本设计中设计车速为 100km/h，双向四车道。 本设计是在对交通量进行分析，查找相应的技术规范的基础上，确定出公路的技 术等级以及设计需要的各种参数，最终确定采用一级公路的技术指标进行设计，通过 两条线路方案的比选， 最终确定最佳方案。 结合周围的地形情况进行了平面线形设计， 平面线形中有二个转角。纵断面的设计中有三个竖曲线，满足平纵线形组合设计中的 各种要求。在横断面的设计中，确定了横断面组成及各种要素后，绘制出横断面图。 本设计中路面设计采用沥青路面进行设计， 主要包括结构层的拟定和设计层厚度计算。 挡土墙设计主要是在拟定

2、结构尺寸后进行各种强度的验算。设计中结合地形及周边环 境条件， 关键词：一级公路 纵断面 横断面 沥青路面 挡土墙 II Abstract This design is a first class highway design from fenghuang to dongxiao. The design speed is100km/h and the road have four lanes. The parameters which are needed in the design are defined by analyzing the traffic and searching the

3、corresponding technical specification. Finally the first class highways technical specification is designed. and through the comparison of two line programs, the best solution is ultimately determined. Based on the surrounding terrain, the alignment of the highway is designed, which has three corner

4、s. There are three vertical curves in the design of vertical alignment, which all meet the design requirement of the linear combination. In the cross section design, the cross section diagrams are drawn after determining the composition and cross section elements. The design of the asphalt pavement mainly contains the selection of the structure layer and the calculation of the layer thickness. The intension of the structure is checked after the selection of the dimensions of the structure in t