山岭区二级公路毕业设计说明书

青岛理工大学毕业设计（论文）摘要摘要本设计为一段山岭区二级公路常规设计，起点高程180米，终点高程150米，地势较为平坦。拟建公路路段为K0+000至K2+371.191段，全长2371.191米，采用双向两车道形式，无中央分隔带，设计时速为60km/h，路面结构采用沥青路面。整个排水系统由边沟、排水沟组成。挡土墙采用重力式挡土墙。本设计分为初步设计和详细设计两个阶段。初步设计中，首先根据交通量确定道路等级，然后在1:5000地形图上确定两条备选路线，对所定路线进行方案比选，从中选择最佳方案。详细设计从确定方案中进行平面设计，纵断面设计，横断面设计，前期工作较初步设计更具体化，此外还对路基，路面，排水，进行了详细设计。通过这次设计不但了解建设公路的各个步骤，而且也能熟练的运用AUTOCAD进行制图。关键词：路线设计，纵断面设计，平面设计，横断面设计青岛理工大学毕业设计（论文）AbstractIIABSTRACTThisdesignisaboutaroadofsecondgradinthehillyarea.Theelevationofthestartpointis180m,theelevationoftheendis150m.Topographyareflat.Thetotallengthoftheproposedhighwayis2371.191m,itisatwo-lanetwo-wayroad,designingspeedis60km/h.Thisdesignismadeupofprimarydesignanddetaileddesign.Intheprimarydesignprocess,firstofall,weshoulddeterminetheroad-gradeaccordingtothetrafficvolume,then,twospareroutesaredeterminedintheterrainmapwithascaleof1:5000,includingtheplanedesign,theverticalsectiondesign,thetransectdesign，thesettingofthebridgesandculverts.Atlast,thereisacomparebetweenthetwoprojectsandthebetterwillbeadopted.Inthedetaileddesignprocess,horizontaldesign,verticaldesignandthecross-sectionaldesignwillbeconductedfromthedeterminedprogram.Theprimetaskismoreconcretelythantheprimarydesign.Furthermore,thesubgradeandpavementhavebeendesignedinstressaswell.Thisdesignnotonlycanmakeusunderstandtheeachstepofconstructioninbuildingroads,andcanalsomakeususeAUTOCADfordrawingskilled.KEYWORDS:routeselection,verticaldesign,horizontaldesign,cross-sectionaldesign青岛理工大学毕业设计（论文）前言1目录摘要..............................................................IABSTRACT...........................................................II前言...............................................................11绪论..............................................................21.1选题背景........................................................................................................21.1.1我国公路现状....................................................................................21.1.2我国公路发展规划............................................................................31.2本设计的基本情况........................................................................................42选线..............................................................52.1选线步骤.........................................................................................................52.2定线.................................................................................................................52.2.1试坡.....................................................................................................52.2.2定导向线.............................................................................................62.2.3平面试线.............................................................................................62.2.4修正导向线.........................................................................................62.2.5定线.....................................................................................................62.3方案比选.........................................................................................................63路线平面设计......................................................83.1平面设计技术指标的确定.............................................................................83.1.1直线.....................................................................................................83.1.2圆曲线.................................................................................................83.1.3缓和曲线.............................................................................................83.2平曲线计算.....................................................................................................93.2.1导线要素计算...................................................................................103.2.2平曲线要素计算...............................................................................113.2.3主点桩号设置...................................................................................164路线纵断面设计..................................................184.1纵坡设计要求...............................................................................................184.1.1纵坡...................................................................................................184.1.2坡长...................................................................................................184.1.3缓和坡段...........................................................................................194.2竖曲线设计...................................................................................................194.2.1竖曲线半径.......................................................................................194.2.2竖曲线要素计算...............................................................................205路线横断面设计...................................................265.1路基设计.......................................................................................................265.1.1路基宽度的确定...............................................................................265.1.2路拱坡度...