湖南省龙山至永顺二级公路初步设计土木工程道路设计

长沙学院毕业设计(论文)I湖南省龙山至永顺二级公路初步设计摘要本设计是湖南省龙山至永顺二级公路初步设计，路段地处丘陵区，沿路地形起伏在400～600m之间，路线起止桩号从K4+000.000至K7+006，该公路的主要技术指标为路基宽度8.5m，双向双车道，无中央分隔带，设计车速60km/h。本次设计的是二级公路的初步设计，首先进行了地形图的研究，在熟悉地形图之后，查阅了当地相关的地形地质，水文气候条件，拟定了两条路线比选方案，在经过比较技术指标及经济指标后，最终选择最佳方案。在路线的平面设计之后，进行了纵横断组合设计、路基设计、路面设计。在路基路面设计完成之后，路基设计专项中的挡土墙设计以及路基路面排水的设计。挡土墙采用的是重力式挡土墙，排水防护设计进行了边沟、排水沟以及截水沟的组合形式。然后进行了涵洞以及平面交叉设计，本路线需要构造两处涵洞，采用圆管涵形式，交叉口采用加铺转角式。最后对进行了工程的概预算，利用纵横概预算软件计算，概算金额为11439135元。关键词：湖南，龙山，永顺，二级公路，初步设计长沙学院毕业设计(论文)IIABSTRACTThedesignofHunanprovinceLongshantoYongshuntworoadsectionsinthepreliminarydesign,thebasin,basinsurroundedbymountainssurroundedby,itselevationin400～600metersbetween.ThetwostagehighwaybeginstopileNo.K4+000,endpileNo.K7+006.Themaintechnicalindexesforhighwayroadbedwidth8.5m,atwo-waydualcarriageway,withoutthecentraldividingstrip.Thedesignofthespeed60km/h.Thisdesignisthetwohighwaypreliminarydesign,firstcarriedoutthestudyontopographicalmap,inafamiliarterrainmap,accesstothelocaltopographyandgeology,hydrologyandclimateconditions.Theinitialformulationofthetworoutealternatives,aftercomparisonoftechnicalindicatorsandtheactualengineeringsituation,thefinalchoiceofrelativelysuitablescheme.Inthecourseofgraphicdesign,proceedwiththelongitudinaldesign,cross-sectionaldesign,roadbeddesign,roadbeddesigniscomplete,startapavementdesign,consideringtheactualsituationoftheproject,finallydecidedtotaketheroaddesignofcementconcretepavement.Inthedesignofroadbedandroadsurfaceiscompleted,aretainingwallanddrainageandprotectiondesign.Theretainingwallisusedingravityretainingwall,drainageandprotectiondesignforthesideditchdrainageditchesanddrainagedesign.Afterconductingaculvertandtheintersectionoftheplaneofthepreliminarydesign,therouteneedtoconstructtwoculverts,usingpipeculvertform,Intersectionusingoverlaycorner.Attheendoftheprojectbudget,projectbudgetaryestimate,accordingtotheactualsituation,usingaspectsoftwareoverthebudget,budgetamountof11439135yuan.Keywords:Hunan,Longshan,Yongshun,twohighway,preliminarydesign长沙学院毕业设计(论文)III目录摘要....................................................................................................................IABSTRACT..........................................................................................................II第1章绪论.....................................................................................................1第2章设计总说明.............................................................................................22.1地质地貌水文状况............................................................................................22.1.1地形地貌................................................................................................22.1.2气象水文................................................................................................22.1.3地层岩性................................................................................................22.1.4沿线材料供应........................................................................................22.2工程概况............................................................................................................32.3交通量资料........................................................................................................32.4设计依据............................................................................................................3第3章路线设计.................................................................................................53.1道路等级确定....................................................................................................53.1.1初始年交通量的确定.............................................................................53.1.2设计交通量的计算................................................................................63.1.3公路等级的确定.....................................................................................73.2路线拟定............................................................................................................73.2.1选线原则................................................................................................73.2.3选线的步骤............................................................................................83.3方案比选............................................................................................................83.3.1两方案特点比较....................................................................................9第4章线形设计...............................................................................................114.1平面设计............................................................................................................114.1.1路线概念...............................................................................................114.1.2直线......................................................................................................114.1.3圆曲线..................................................................................................114.1.4缓和曲线...............................................................................................12长沙学院