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ZSKai设计说计说明2010-6-2.doc

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ZSKai设计说计说明2010-6-2.doc

潍坊学院本科毕业论文第页I摘要本次设计为途径陕西渭南的一段一级公路设计。全线在渭南白杨乡境内,总长7800米。此次设计的道路根据当地的交通量的大小要求为双向四车道,设计时速为80千米/小时,道路总宽度为24.5米,单向行车道宽7.5米。由于所筑道路所经路程既有平原微丘又有起伏较大山岭重丘,施工较为困难,土石方工程浩大,施工过程中要解决很多技术问题,故施工工期受到多方面影响。道路全线总长7800米,其中道路建设长度为7800米,由于从K0676K0682、K2630K2698为两座中桥,根据平面图的地形、地貌、水文等条件可以知道在本路段要进行浸水路堤设计,为了防治河水冲刷对路堤造成破坏,故此路段的路堤采用了直接防护措施中的抛石防护的方法。在选线上,从道路所处地理条件,施工难度和经济上考虑,并且还要满足一级公路的行驶要求,确定主线。一级公路,对于平原微丘地形一般最小半径为1000m,极限最小半径650m而对于山岭重丘地区地形一般最小半径为700m,极限最小半径600m。全线共设六处平曲线,纵断面上共设三处竖曲线,满足行驶最大坡度和长度要求,保证道路的通顺和良好的视野。新建路面设计总共分四层,规范规定高速公路、一级公路的面层由两至三层组成。根据规范推荐,本路面设计采用两层式沥青面层,表面层采用细粒式沥青混凝土厚度4cm,中面层采用中粒式沥青混凝土厚度6cm,基层采用石灰粉煤灰沙砾土厚度26cm,下基层采用石灰土稳定碎石厚度25cm。当以设计弯沉值为指标及沥青层层底拉应力验算时,设计年限内一个车道上累计当量轴次1120万次,经验算弯沉值和拉应力均满足要求。施工组织设计主要确定了各项的施工工序和工艺流程。根据总体施工情况,总共设置了四个施工队平行施工。工期确定根据关键机器台班数量和工程量,施工工序相互协调确定,本次预计施工总工期大约七个月,由于天气或外界环境影响施工工期可以弹性变化。关键词平、纵、横路线设计,路面结构,施工组织。潍坊学院本科毕业论文第页IIABSTRACTThisisthedesignforthefirstclassroadinWeinan,ShanxiProvince.ThewholelineoftheroadlocatesinthebaiyangCounty,Weinanandthetotallengthis7800m.Theroadhasthecharactersasbelow4linedoubleway,80km/h,24.5mwideand7.5mwideperline.Fortheconcernofmountainousterrainanddifficultiesintheconstruction,theremightbemanyproblemsinthepracticalconstruction.Thetotallengthofthedesignis7800m.Theroadinconstructionisabout7800m.SinceK0676K0682,K2630K2698bridgefortwo,Undertheplantopographyoftheterrain,topography,hydrologicalconditionscanknowthatthesegmentforsoakingembankmentdesignTocombattheerosionoftheriverembankmentcauseddamage,Thereforesectionoftheembankmentusingadirectmeasureofprotectionriprapprotectionmethods.Whenchoosingthemainline,weconsiderthefactorsofmountainousconditions,constructiondifficultiesandfinancialbudget.Thereare5horizontalcurveswiththeradiuof1000m,and3verticalcurveswhichwouldensurethemaximumgradeandlengthrequirementsofdesign.Atthesametime,thetravelwouldbesmoothandthescopewillbefine.Theroadstructureconsistof6levels,Newpavementdesignledtoatotalbreakdown,normshighway,aroadsurfacebytwotothreecomponents.Accordingtonormsrecommendedthatthethreetierdesignoftheroadasphaltsurface,usingfinegrainedsurfacelayerofasphaltmasticlithotripsy4cmthickness,Faciallayerusedthetabletsgradedasphaltconcrete5cmthickness,Belowlayerusingcoarseasphaltconcretethicknessof5cmprimaryuseofcementgravelsoilsthicknessunknownandlimesoilstabilityscheduledlithotripsy20cmthickness,thegrassrootsusinginterstitiallithotripsy20cmthickness.Whenadesigndeflectionvalueofindicatorsandbottomlayersofasphaltstresscalculation,Designlifeofalanecumulativeequivalentaxleof11.2milliontimes,experiencecountdeflectionvalueandtensilestresscanmeetthedemands.Thispartofdesignisaboutmakingtherightsequenceofconstruction.Accordingtothegeneralsituation,weorganizefourdifferentgroupsworkinginparallel.Themethodforconstructionisdecidedbytheprojectquntumnandtechnologiesintheconstruction。Thetimeforconstructionisdeterminedbydainclassandtheprojectquntumn.Theoveralltimeofconstructionisestimatedtobesevenmonthswhichmightvaryduetotheweatherchanges.KEYWORDSpeace,verticalandhorizontallinedesign,surfacestructure,constructionmanagement,budget潍坊学院本科毕业论文第页III目录前言..........................................................................................................................................1第1章总说明..........................................................................................................................41.1地形、地貌......................................................................................................................41.2地质条件..........................................................................................................................41.3水文地质..........................................................................................................................41.4气候条件..........................................................................................................................51.5旅游资源...........................................................................................................................51.1.6地震...............................................................................................................................5第2章路线设计......................................................................................................................62.1设计概况..........................................................................................................................62.2平面线形设计..................................................................................................................62.2.1路线定线、选线规则...............................................................................................62.2.2平曲线要素计算.......................................................................................................82.3纵断面线形设计............................................................................................................122.3.1设计原则及要求.....................................................................................................122.3.2竖曲线要素计算.....................................................................................................152.4横断面线形设计............................................................................................................162.4.1本设计路段横断面设计形式.................................................................................16第3章路基设计....................................................................................................................173.1设计原则和依据............................................................................................................173.1.1设计原则.................................................................................................................173.1.2设计依据.................................................................................................................173.2横断面的设计情况........................................................................................................17潍坊学院本科毕业论文第页IV3.2.1路基横断面设计.....................................................................................................173.2.2加宽设计说明..........................................................................................................183.3路基排水系统结构和布置............................................................................................203.3.1路基路面排水设计原则.........................................................................................203.3.2路基排水设计.........................................................................................................203.3.3路面排水设计.........................................................................................................22第4章路面设计....................................................................................................................254.1路面设计原则................................................................................................................254.2设计步骤........................................................................................................................264.2.1设计路面简介.........................................................................................................264.2.2设计弯沉值和容许拉应力计算.............................................................................264.2.3新建路面未知层(石灰土稳定碎石层)厚度计算.............................................284.2.4设计指标汇总.........................................................................................................29第5章公路施工组织设计....................................................................................................335.1编制依据.........................................................................................................................335.2编制原则.........................................................................................................................335.3工程概况.........................................................................................................................345.3.1主要技术标准..........................................................................................................345.3.2工地交通条件..........................................................................................................34工程所在区域的交通条件较好,但进场施工便道须拓宽,施工现场无现成可利用施工便道,需新建施工便道...............................................................................................345.4公路工程施工准备........................................................................................................345.4.1施工现场准备.........................................................................................................345.4.2劳力、机具设备和材料准备.................................................................................355.4.3技术准备.................................................................................................................375.5地面道路施工.................................................................................................................385.5.1原地面清理和填前碾压..........................................................................................38

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