二级公路设计计算说明书

摘要I福建306省道施工图设计专业：交通工程学号：20100110090211学生姓名：易思长指导老师：莫振龙摘要本次设计是福建省306省道的改造工程，公路全长近3000米。该公路沿线地形比较复杂，多为山岭，沟谷，河流，并有多处工厂。沿线地势变化比较明显，全线海拔在670米至780米之间，起终点高差比较大。该公路的预计建成后第一年的交通量为3889辆/日，年平均增长率为8%，设计年限为15,。根据规范要求，因此应设为二级公路，但同时又考虑到地形比较复杂的原因，设计速度定为40km/h比较合理。本次设计本着“和谐、人性、环保、安全”的设计原则，根据国家最新设计规范进行设计。道路部分包括路线线形方案的选择、平面设计、纵断面设计、横断面设计、路面结构设计、路基排水设计、交通沿线设施设计。设计成果包括路线平面图、路线纵断面图、路基横断面图、路基路面结构图、道路技术经济指标表、直曲转角表、路基土石方数量、路基设计表、路基工程数量表等等。关键词：二级公路；设计原则；设计成果AbstractII306provincialhighwayconstructiondrawingdesigninFuJianprovinceAbstractThisdesignisthe306provincialhighwayreconstructionprojectinfujianprovince,Roadofnearly3000milesinlength.Thetopographyiscomplicatedalongthehighway,Muchasmountains,valleys,rivers,andtherearemanyfactories.Theobviousalongtheterrainchange,Acrosstheboardbetween670metersto780metersabovesealevel,Theendpointelevationdifferenceislarger.Thehighwayisexpectedinthefirstyearafterthecompletionofthetrafficvolumeof3889/day,Theaverageannualgrowthrateof8,Designoffixednumberofyearfor15years.Accordingtothespecificationrequirements,Shouldbesetasthesecondaryroad,Butatthesametime,consideringtheterrainismorecomplex,Designspeedis40km/hisquitereasonable.Thedesignprincipleofthisdesignisinlinewithharmonious、humanity、environmental、safety,Accordingtothenationaldesignspecificationforlatestdesign.Roadsectionincludingtheselectionoftheroutescheme,Theplanedesign,Profiledesign,Cross-sectionaldesignofpavementstructure,designofsubgradedrainage,designAlongthetrafficfacilities.DesignresultsincludeRouteplanroutelongitudinalprofileSubgradecrosssectionaldrawingroadsubgradepavementstructureoftechnicalandeconomicindicatorstableStraightcurvedcornertableNumberoftheearthworkroadbedsubgradeengineeringdesigntabletable,etc.Keywords:Secondaryroad;designphilosophy;Designresults目录目录摘要..............................................................................................................................................IAbstract....................................................................................................................................II第一章设计概述.............................................................................................................11.1设计理念....................................................................................................................11.2然地理条件及材料供应....................................................................................11.2.1自然条件...............................................................................................................11.2.2材料供应...............................................................................................................11.3设计概要....................................................................................................................11.4设计指标....................................................................................................................1第二章道路平面设计.....................................................................................................22.1选线原则....................................................................................................................22.2路线指标确定........................................................................................................32.3道路平面设计.........................................................................................................42.3.1平面线形设计原则........................................................................................42.3.2平曲线设计（曲线要素与主要控制点桩号计算）.....................42.4道路平面设计总结...............................................................................................7第三章纵断面设计........................................................................................................73.1纵坡设计原则.........................................................................................................73.2竖曲线设计原则....................................................................................................83.3线形组合设计原则...............................................................................................83.4纵断面设计指标确定.........................................................................................8目录3.5纵断面设计计算....................................................................................................93.6纵断面设计总结..................................................................................................10第四章横断面设计.........................................................................................................114.1横断面设计原则..................................................................................................114.2设计步骤..................................................................................................................114.3各项技术指标的确定.......................................................................................114.4平曲线加宽设计..................................................................................................134.5平面超高设计..............................................................