摘要为了巩固我们所学的知识，并在各方面得到更进一步的提高，我们选择了敦煌至当金山口二级公路设计作为毕业设计，这是在毕业之前对自身学习状况的最后一次检查。我所选择的设计路段是从DK32+000至DK40+000段，全长8km，设计车速为60km/h，路基宽度为10m。本次设计的内容有：平面线设计、纵断面设计、横断面设计。对交通量进行了分析，查找相应技术规范，确定公路的等级以及设计需要的各种参数。平面线设计包括纸上选线、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、竖曲线设计等，超高的设定满足了设计要求的8%之内，在竖曲线设计时，应注意行车视距和视线诱导问题即满足“平包纵”，合成坡度也要满足规范要求；横断面设计时，使行车更加舒适，为确保道路的使用年限，在路段上还做了防护和排水设计；桥涵设计包括桥梁和涵洞的形式、尺寸的设计；英文翻译。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：路线平面横断面纵断面桥涵IThedesignisveryimportanttous.Notonlybecausethisisourlastassignmentbeforegraduation,butalsoitcanenhanceourability.Thisgraduationdesignisthesegmentofthesecondclassroadwhichstartsfromdunhuangtodangjinshankou.Theroad,whichis8kmfromDK32+000toDK40+000.Thedesignspeedis60km/handthewideofthesubgradeis10m.Thecontentsfordesignhave:Theflatsurfacelinedesign,verticalsectiondesign,crosssectiondesign,blockthesoilwalldesignandtheengineeringquantitycalculationsandgroundssquaredispensation.Hascarriedontheanalysistothevolumeoftraffic,searchcorrespondingtechnicalspecifications,highwaytodeterminethelevelsincludesthepaperselectline,settleline,acurve,themitigationcurveparameterenactment,straightlinedesignetc.;Theverticalsectiondesignincludestopullthegradient,Setextremelyhighlyonsatisfying8%ofthedesignrequestinsidetheverticalcurvedesign...etc.,attheverticalcurvedesign,attherequestofnoticetogothecartoseetobeapartfromsynthesizetheslopealsowantsatisfythenorm;Whenthecrosssectiondesign,consideredtheextremelyhighconstitution,makegothecarmorecomfortable,inordertoinsuretheusagetimelimitoftheroad,stilldidtheprotectionanddrainthedesignontheroadsegment;Thedesignofthebridgeandculvertswhichincludesizeandform;TranslateanEnglisharticleintoChinese.Thisdesignnotonlytounderstandthevariousroadbuildingsteps,butalsoskilledintheuseofAutoCAD.Alignment;Flatsurfacedesign;Verticalsectiondesign;Crosssectiondesign;Roadsurfacebridge2.2.1平面设计5.II录1绪论.............................................................1.1.1中国公路发展简介...........................................1.1.1.1公路发展历程...........................................1.1.1.2公路建设评述...........................................2.1.1.3公路建设意义...........................................3.1.2公路设计控制要素............................................3.1.2.1已知资料.............................................3.1.2.2汽车代表车型与换算系数.................................4.1.2.3交通量计算.............................................4.1.3公路等级的确定..............................................4.1.4设计行车速度的确定..........................................4.1.5服务水平....................................................4.2工程概况.........................................................5.2.1工程简介....................................................5.2.1.1工程名称...............................................5.2.1.2设计内容...............................................5.2.1.3工程特点..............................................
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