道路桥梁工程技术三级水泥公路毕业设计.docVIP

摘 要 本设计为临沂B3～B1段三级公路线形及水泥路面设计，临沂全境地形主要以平原、山地、丘陵为主，地势较为平坦。本次设计的内容有：平面线形设计、纵断面设计、横断面设计。平面线形设计包括纸上选线、定线，圆曲线、缓和曲线参数设定，直线设计等；纵断面设计包括拉坡、竖曲线要素设计等。在竖曲线设计时，应注意行车视距和视线诱导问题即满足“平包竖”，合成坡度也要满足规范要求；横断面设计中，进行了挡墙和涵洞的排水设计。 本设计从近期和远期交通量出发，综合考虑了未来几年的人口增长和交通量的变化，遵循“以人为本”科学发展的可持续发展的原则，更好地服务沂蒙革命老区建设大美临沂。 关键词 线形设计，路基路面设计，挡土墙设计 ABSTRACT This design is LinYi B3～B1 level 3 highway alignment and cement road surface design, LinYi across terrain mainly plains, mountains, hills, relatively flat terrain.The content of this design are: the plane line design, profile design, cross-sectional design.Plane line design including paper line selection, routing, circular curve, transition curve parameter setting, straight line design, etc.;Profile design, such as slope, vertical curve design, ultra-high set to meet the design requirements of 2%, on the vertical curve design, should pay attention to the driving range and the line of sight guidance problem which meet the flat pack, and synthetic slope will meet the specification requirements;Cross-sectional design, make driving more comfortable, in order to ensure the use fixed number of year of the road, on the road also made a retaining wall and the design of the drainage culvert.This design embarks from the immediate and long-term traffic, considering the changes in population growth and traffic over the next few years, follow the people-oriented scientific development of the principle of sustainable development, better serve the river bank Mongolia old revolutionary base areas of LinYi. KEYWORDS line design, subgrade and pavement design，retaining wall design 目 录 摘 要 I ABSTRACT II 前 言 1 第1章 道路概况 2 1.1概述 2 1.2公路自然区划 2 1.3工程地质、水文地质 2 1.4气候条件 3 1.5设计标准 3 1.6公路等级确定 3 第2章 平面设计 6 2.1平面设计一般原则 6 2.2直线 7 2.3圆曲线 8 2.4缓和曲线 10 2.5 方案比选 14 第3章 纵断面设计 16 3.1纵断面设计的原则 16 3.2纵断面设计要点 17 3.3平纵组合的设计原则 19 3.4计算竖曲线要素 19 3.5纵断面设计方法及步骤 21 第4章 横断面设计 22 4.1路肩的作用及宽度 23 4.2路拱横坡度 23 4.3平曲线加宽设计 23 4.4平曲线超高设计 24 4.5行车视距 24 4.6横断面设计方法 25 4.7路基宽度的确定 25 4.8路堤和路堑边坡坡度的确定 25 4.9路基土石方数量