路桥专业毕业设计二级公路计算书

本科毕业设计(论文)题目：咸阳郊县二级公路设计院（系）：建筑工程学院专业：土木工程专业班级：080704姓名：毛春晓学号：080704114导师：刘丽萍2012年06月中文摘要I咸阳郊县二级公路设计摘要本设计为咸阳郊县二级公路设计，该段路线总长为4327m。本设计中设计车速为60km/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。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；排水；路基；沥青路面；英文摘要ⅡTheXianyangsuburbansecondaryroadsdesignAbstractThisdesignisasecondaryroadoftheXianyangsuburbanandthetotallengthofthesectionis4327m.Thedesignspeedis60km/handtheroadhastwolanes.Theparameterswhichareneededinthedesignaredefinedbyanalyzingthetrafficandsearchingthecorrespondingtechnicalspecification.Finallythesecondaryroad’stechnicalspecificationisdesigned.Basedonthesurroundingterrain,thealignmentofthehighwayisdesigned,whichhasthreecorners.Therearethreeverticalcurvesinthedesignofverticalalignment,whichallmeetthedesignrequirementofthelinearcombination.Inthecrosssectiondesign,thecrosssectiondiagramsaredrawnafterdeterminingthecompositionandcrosssectionelements.Thedesignoftheasphaltpavementmainlycontainstheselectionofthestructurelayerandthecalculationofthelayerthickness.Thedesigniscombinedwiththeterrainandsurroundingenvironmentconditions,andthroughthecomparisonoftwolineprograms,thebestsolutionisultimatelydetermined.Keywords:secondaryroads;verticalsection,crosssection;drainage;roadbed;asphaltpavement;目录Ⅲ目录中文摘要.....................................................................................................I英文摘要...................................................................................................Ⅱ目录...................................................Ⅲ主要符号表.............................................Ⅳ1绪论..................................................11.1公路建设的意义...............................................11.2设计背景.....................................................11.3毕业设计的主要内容...........................................12设计资料及设计任务.....................................22.1设计资料及设计依据..........................................22.1.1设计资料...............................................22.1.2设计依据...............................................32.2设计任务及主要内容..........................................32.2.1设计任务...............................................32.2.2主要内容...............................................42.3基本技术指标................................................43路线平面设计..........................................63.1公路方案的拟定和比选.........................................63.1.1概述...................................................63.1.2选线的一般原则.........................................63.1.3选线步骤...............................................63.1.4方案比选...............................................73.2道路平面设计................................................73.2.1平面设计的要求.........................................73.2.2圆曲线设计.............................................8目录Ⅲ3.2.3缓和曲线设计...........................................83.2.4平面线形设计...........................................83.2.5平面曲线要素计算.......................................93.3道路纵断面设计.............................................163.3.1纵断面设计的要求......................................163.3.2纵坡设计..............................................163.3.3竖曲线设计及要素计算..................................183.4道路平、纵线形组合设计.....................................244道路横断面设计.......................................264.1道路横断面设计..............................................264.1.1横断面组成............................................264.1.2路基宽度的确定........................................264.1.3横断面其他组成元素的设计..............................264.1.4超高设计与计算........................................274.1.5路基横断面设计........................................314.1.6土石方数量计算及调配.........................................325路面结构设计.........................................335.1路面结构类型选定...............................................335.1.1路面设计要求..........................................335.1.2沥青混凝土路面与水泥混凝土路面的比较..................335.1.3路面结构类型选定......................................335.2路面组合及构造设计.........................................345.2.1沥青路面结构组合设计的任务及基本原则..................345.2.2轴载换算及累计当量轴次................................345.3结构组合与材料选取.........................................365.4各层材料的抗压模量与劈裂强度...............................375.5土基回弹模量的确定.........................................375.6设计指标的确定.............................................37西安工业大学毕业设计(论文)Ⅲ5.7方案的计算概况...........................................................................................395.8方案比选........................................................................................................426.道路排水设计........................................436.1排水设计的目的和要求.......................................436.2路基排水设计一般原则.......................................436.3路基排水系统设计步骤.......................................436.4边沟及排水沟设计...........................................44总结...................................................46参考文献............................