土木工程道桥专业二级公路毕业设计.doc

摘 要 本设计是从信阳到商城某段二级公路的设计，该段路线总长为3054m。本设计中设计车速为80km/h，双向两车道。 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，最终确定采用二级公路的技术指标进行设计。结合周围的地形情况进行了平面线形设计，平面线形中有三个转角。纵断面的设计中有两个竖曲线，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。涵洞设计主要是在拟定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，通过两条线路方案的比选，最终确定最佳方案。 关键词：二级公路；纵断面；横断面；沥青路面；涵洞 Abstract This design is a secondary road design from Xinyang to Shangcheng and the total length of the section is 3054m. The design speed is 80km/h and the road has two lanes. The Tparameters which are needed in the design are defined by analyzing the traffic and searching the corresponding technical specification. Finally the secondary road’s technical specification is designed. Based on the surrounding terrain, the alignment of the highway is designed, which has three corners. 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 the culvert design. The design is combined with the terrain and surrounding environment conditions, and through the comparison of two line programs, the best solution is ultimately determined. Keywords：Secondary road, vertical section, cross section, Asphalt pavement，culvert 朗读显示对应的拉丁字符的拼音?字典 可翻译 50 多种语言 haydi gidelim ????? παραλ?α ?? Простите χρησμ?? Je ne sais pas ! Pardon ?? děti ???? Wie bitte? miracoloso rouge ?? ???! La voiture ??????? Wie hei?en Sie? ??? ??? ????? ?Cómo estás? Hjelp! Es ist sehr interessant! ??? hoje está ensolarado V?r s? snill さようなら mijn vriend Ich bin vierzig Jahre alt ?????? escargots Je parle un petit peu fran?ais. ?? ???? ??????? ??