HGU管沟施工方案

目录TOC\o"1-2"\h\z\u1、 编制依据 11、 CompilationBasis 12、 工程概况 12、 General 13、 施工准备 23.ConstructionPreparation 24、 施工计划部署 34.ConstructionPlanArrangement 35、 施工缝划分 95.DivisionofConstructionJoints 96、 垫层及替代砼的浇筑 106.PlacingofBeddingConcreteandConstituteConcrete 107、 脚手架工程 107、ScaffoldWork 108、模板工程 148.1模板情况介绍 148.1IntroductionofFormwork 148.2廊道模板制作要求 148.2RequirementforPipewayFormworkManufacturing 148.3模板安装 148.4模板拆除 158.4StrippingofFormwork 169.钢筋工程 169.1钢筋材质及制作 169.1ReinforcementMaterialandFabrication 169.2钢筋保护层 179.2CoverofReinforcement 179.3钢筋连接 179.3ReinforcementConnection 179.4钢筋的防污染保护 189.4ContaminationProofofReinforcement 1810、混凝土工程 1811、质量保证 2412、安全文明施工措施 2513、计算书 26HGU管沟施工方案ConstructionMethodsStatementOnHGO1、编制依据1.CompilationBasis台山核电站一期常规岛土建工程施工合同CivilWorkContractofTaishanNuclearPowerStationConventionalIsland(Phase1);欧标技术规格书（B版）EuropeanStandardTechnicalSpecification(EditionB)HGU管沟施工图纸ConstructionDrawingsofHGUPipeway台山核电站一期常规岛土建工程现场施工情况CivilWorkOn-siteConstructionConditionofTaishanNuclearPowerStationConventionalIsland(Phase1)工程概况2.General台山核电站一期工程HGU管沟是连接循环水虹吸井（HCA）与重要厂用水泵房（HPA/C）专设的重要冷却水管沟。采用核岛反应堆坐标系（坐标以1980西安坐标系为准），反应堆厂房标高±0.00相对于8.7m(国家85高程系)，所有标高都以反应堆厂房的相对标高为准；HGU管沟外截面大部分为3.5m×3.5m，内孔大部分截面为2.5m×2.5m的方孔，侧壁及底板、顶板均为500mm厚的现浇钢筋混凝土结构；结构需进行找坡，找坡坡度分别为0.3%、0.34%与0.38%。HGU管沟替代砼及垫层采用C25砼，主体结构采用欧标C35/45砼；管沟共计10段(060～069段)InTaishanNuclearPowerStationproject(Phase1),HGUisessentialcoolingwaterpipewaywhichisdedicatedtolinktherecycledwatersiphonwell(HCA)andessentialservicepumpstation(HPA/C).CoordinatesystemofNuclearIslandreactorisapplied(XIANCoordinateSystem1980).Level±0.00ofreactorbuildingcorrespondsto8.7mofNationalElevationDatum1985.Alllevelsrelatetothereferencelevelofreactorbuilding.TheoutsidesectionofHGUislargelysquareholeof3.5m×3.5mandinsidesectionislargelysquareholeof2.5m×2.5m.Thesidewall,baseslabandtopslabofthepipewayarereinforcementconcretestructureof500mmthickwhichshallbecastinsitu.Theslopshallbemadeinstructureandtheslopevariesfrom0.3%,0.34%to0.38%.TheC25concreteshallbeappliedtotheHGUPipewayconstituteconcreteandbeddingconcrete,whileENC35/45concreteshallbeappliedtothemainstructure.施工准备3.ConstructionPreparation3.1人员安排：3.1PersonnelPreparation队长：罗泽军；全面负责HGU管沟的施工管理与现场协调工作。TeamLeader:LuoZejun,responsibleforcomprehensiveconstructionmanagementandsitecoordinationofHGUpipeway.钢筋工长：彭广理；负责HGU管沟钢筋的绑扎与验收工作。ReinforcementForeman:PengGuangli,responsibleforthereinforcementfixingandacceptanceofitinHGUpipeway.木工工长：周贵伟；负责HGU管沟模板的支护与验收工作。CarpentryForeman:ZhouGuiwei,responsibleforformworkinstallationandacceptanceofitinHGUpipeway.混凝土工长：黄建根；负责HGU管沟模板的支护与验收工作。ConcreteForeman:HuangJian’gen,responsibleformworkinstallationandacceptanceofitinHGUpipeway.技术员：刘志强；负责HGU管沟施工过程中技术问题及技术交底工作。Technician:LiuZhiqiang,responsibletoresolvetechnicaldifficultiesandtechnicalannotationduringHGUpipewayconstruction.QC1:张严光；负责HGU管沟施工过程中的质量监督、检查工作。QC1:ZhangYan’guang,responsibleforqualitysupervisionandinspectionduringHGUpipewayconstruction.QC2:刘炜；负责HGU管沟施工过程中的W、H点进行复检，对其它工序进行抽检验证等工作。QC2:LiuWei,responsibleforrecheckofpointWandHandsamplinginspectionofotherprocess.安全员：李永全；负责HGU管沟施工过程中安全监督、检查和文明施工管理工作。SafetyOfficer:LiYongquan,responsibleforsafetysupervision&inspectionandcivilizedconstructionmanagement.测量员：2名；负责HGU管沟施工过程中测量放线工作。2SurveyCrew:responsibleforsetting-outduringHGUpipewayconstruction.资料员：负责HGU管沟施工过程中图纸和文件的接收，编制验收资料（国标和ETF）等工作。DocumentController:responsibleforreceivingdrawingsanddocumentsandcompilingacceptancedocuments(nationalstandardandETFdocument)duringHGUpipewayconstruction.在结构施工高峰期，计划进场工人：木工15人，钢筋工20人，混凝土工20人、焊工2人、架子工15人，特殊工种，必须经过培训，有上岗证，持证上岗。Durdingthepeakperiodofstructureconstruction,itisplannedtomobilize:15woodworkers;20reinforcementworkers,20concreteworkers,2welders,15scaffolders.Workersofspecialpostsshallattendtrainingandgetworklicense.3.2机具准备3.2EquipmentandMachineryPreparation结构施工高峰期混凝土浇筑设备：Concreteplacingequipmentsduringpeakperiodofstructureconstruction:序号No.设备名称EquipmentName型号Model工作能力Capability备注Note1混凝土搅拌运输车ConcreteMixingTruckJGC5292GJB85台5Sets2混凝土汽车泵ConcreteAutoPump140-100m3/8.5-12Mpa/44.5m120m3/1台1Set3混凝土振动棒ConcreteVibratorZN505520根20Sets注:砼浇筑时主体队需储备雨布，防止雨水对砼质量的影响；夜间施工需增加照明灯具。Note:Duringconcreteplacing,theMainStructureTeamshallpreparerainclothtopreventtheconcretequalityfrombeingaffectedbytherain.Lightingequipmentshallbepreparedduringnightconstruction.施工计划部署4.ConstructionPlanArrangementHGU管沟计划从2009年11月8日开工，到2010年2月7日完工（除60、62、63、69段的上段部分外），总工期92天，下表为具体部署：TheconstructionofHGUpipewayisplannedtostartonNovember8thof2009andtobefinishedonFebruary7thof2010(theuppersectionof60th,62nd,63rdand69thSectionarenotcompletedduringthisperiod).Theconstructionlastsfor92daysandfollowingisdetailedschedule:任务名称ProjectName工期ConstructionPeriod开始时间StartTime完成时间CompletionTimeHGU专设重要冷却水廊道EssentialCoolingWaterPipeway(HGU)92d2009-11-88:002010-2-717:00HG-66段HG-66Section65d2009-11-88:002010-1-1117:00下段LowerSection50d2009-11-88:002009-12-2717:00替代、垫层施工ConstructionofConstituteandBeddingConcrete4d2009-11-88:002009-11-1117:00钢筋绑扎（包括止水钢板安装）ReinforcementFixing(includinginstallationofwaterstopsteelplate)5d2009-12-188:002009-12-2217:00模板支设FormworkInstallation3d2009-12-238:002009-12-2517:00隐蔽验收ConcealedWorkAcceptance1d2009-12-268:002009-12-2617:00砼浇筑ConcretePlacing1d2009-12-278:002009-12-2717:00上段UpperSection13d2009-12-308:002010-1-1117:00砼凿毛ConcreteRoughening1d2009-12-308:002009-12-3017:00墙体钢筋绑扎WallReinforcementFixing3d2009-12-318:002010-1-217:00墙体模板支设WallFormworkInstallation3d2010-1-38:002010-1-517:00内支撑架搭设InnerBracingFrameInstallation3d2010-1-38:002010-1-517:00顶模铺设TopFormworkInstallation2d2010-1-68:002010-1-717:00顶板钢筋绑扎TopSlabReinforcementFixing2d2010-1-88:002010-1-917:00隐蔽验收ConcealedWorkAcceptance1d2010-1-108:002010-1-1017:00砼浇筑ConcretePlacing1d2010-1-118:002010-1-1117:00HG-64段HG-64Section65d2009-11-88:002010-1-1117:00下段LowerSection50d2009-11-88:002009-12-2717:00替代、垫层施工ConstructionofConstituteandBeddingConcrete4d2009-11-88:002009-11-1117:00钢筋绑扎（包括止水钢板安装）ReinforcementFixing(includinginstallationofwaterstopsteelplate)5d2009-12-188:002009-12-2217:00模板支设FormworkInstallation3d2009-12-238:002009-12-2517:00隐蔽验收ConcealedWorkAcceptance1d2009-12-268:002009-12-2617:00砼浇筑ConcretePlacing1d2009-12-278:002009-12-2717:00上段UpperSection13d2009-12-308:002010-1-1117:00砼凿毛ConcreteRoughening1d2009-12-308:002009-12-3017:00墙体钢筋绑扎WallReinforcementFixing3d2009-12-318:002010-1-217:00墙体模板支设WallFormworkInstallation3d2010-1-38:002010-1-517:00内支撑架搭设InnerBracingFrameInstallation3d2010-1-38:002010-1-517:00顶模铺设TopFormworkInstallation2d2010-1-68:002010-1-717:00顶板钢筋绑扎TopSlabReinforcementFixing2d2010-1-88:002010-1-917:00隐蔽验收ConcealedWorkAcceptance1d2010-1-108:002010-1-1017:00砼浇筑ConcretePlacing1d2010-1-118:002010-1-1117:00HG-65段HG-65Section52d2009-11-88:002009-12-2917:00下段LowerSection39d2009-11-88:002009-12-1617:00替代、垫层施工ConstructionofConstituteandBeddingConcrete4d2009-11-88:002009-11-1117:00钢筋绑扎（包括止水钢板安装）ReinforcementFixing(includinginstallationofwaterstopsteelplate)5d2009-12-78:002009-12-1117:00模板支设FormworkInstallation3d2009-12-128:002009-12-1417:00隐蔽验收ConcealedWorkAcceptance1d2009-12-158:002009-12-1517:00砼浇筑ConcretePlacing1d2009-12-168:002009-12-1617:00上段UpperSection13d2009-12-178:002009-12-2917:00砼凿毛ConcreteRoughening1d2009-12-178:002009-12-1717:00墙体钢筋绑扎WallReinforcementFixing3d2009-12-188:002009-12-2017:00墙体模板支设WallFormworkInstallation3d2009-12-218:002009-12-2317:00内支撑架搭设InnerBracingFrameInstallation3d2009-12-218:002009-12-2317:00顶模铺设TopFormworkInstallation2d2009-12-248:002009-12-2517:00顶板钢筋绑扎TopSlabReinforcementFixing2d2009-12-268:002009-12-2717:00隐蔽验收ConcealedWorkAcceptance1d2009-12-288:002009-12-2817:00砼浇筑ConcretePlacing1d2009-12-298:002009-12-2917:00HG-67段HG-67Section30d2009-11-308:002009-12-2917:00下段LowerSection17d2009-11-308:002009-12-1617:00替代、垫层施工ConstructionofConstituteandBeddingConcrete3d2009-11-308:002009-12-217:00钢筋绑扎（包括止水钢板安装）ReinforcementFixing(includinginstallationofwaterstopsteelplate)5d2009-12-78:002009-12-1117:00模板支设FormworkInstallation3d2009-12-128:002009-12-1417:00隐蔽验收ConcealedWorkAcceptance1d2009-12-158:002009-12-1517:00砼浇筑ConcretePlacing1d2009-12-168:002009-12-1617:00上段UpperSection13d2009-12-178:002009-12-2917:00砼凿毛ConcreteRoughening1d2009-12-178:002009-12-1717:00墙体钢筋绑扎WallReinforcementFixing3d2009-12-188:002009-12-2017:00墙体模板支设WallFormworkInstallation3d2009-12-218:002009-12-2317:00内支撑架搭设InnerBracingFrameInstallation3d2009-12-218:002009-12-2317:00顶模铺设TopFormworkInstallation2d2009-12-248:002009-12-2517:00顶板钢筋绑扎TopSlabReinforcementFixing2d2009-12-268:002009-12-2717:00隐蔽验收ConcealedWorkAcceptance1d2009-12-288:002009-12-2817:00砼浇筑ConcretePlacing1d2009-12-298:002009-12-2917:00HG-68段HG-68Section51d2009-11-308:002010-1-1917:00下段LowerSection38d2009-11-308:002010-1-617:00替代、垫层施工ConstructionofConstituteandBeddingConcrete3d2009-11-308:002009-12-217:00钢筋绑扎（包括止水钢板安装）ReinforcementFixing(includinginstallationofwaterstopsteelplate)5d2009-12-288:002010-1-117:00模板支设FormworkInstallation3d2010-2010-1-417:00隐蔽验收ConcealedWorkAcceptance1d2010-1-58:002010-1-517:00砼浇筑ConcretePlacing1d2010-1-68:002010-1-617:00上段UpperSection13d2010-1-78:002010-1-1917:00砼凿毛ConcreteRoughening1d2010-1-78:002010-1-717:00墙体钢筋绑扎WallReinforcementFixing3d2010-1-88:002010-1-1017:00墙体模板支设WallFormworkInstallation3d2010-1-118:002010-1-1317:00内支撑架搭设InnerBracingFrameInstallation3d2010-1-118:002010-1-1317:00顶模铺设TopFormworkInstallation2d2010-1-148:002010-1-1517:00顶板钢筋绑扎TopSlabReinforcementFixing2d2010-1-168:002010-1-1717:00隐蔽验收ConcealedWorkAcceptance1d2010-1-188:002010-1-1817:00砼浇筑ConcretePlacing1d2010-1-198:002010-1-1917:00HG-61段HG-61Section59d2009-11-228:002010-1-1917:00下段LowerSection46d2009-11-228:002010-1-617:00替代、垫层施工ConstructionofConstituteandBeddingConcrete3d2009-11-228:002009-11-2417:00钢筋绑扎（包括止水钢板安装）ReinforcementFixing(includinginstallationofwaterstopsteelplate)5d2009-12-288:002010-1-117:00模板支设FormworkInstallation3d2010-1-28:002010-1-417:00隐蔽验收ConcealedWorkAcceptance1d2010-1-58:002010-1-517:00砼浇筑ConcretePlacing1d2010-1-68:002010-1-617:00上段UpperSection13d2010-1-78:2010-1-1917:00砼凿毛ConcreteRoughening1d2010-1-78:002010-1-717:00墙体钢筋绑扎WallReinforcementFixing3d2010-1-88:002010-1-1017:00墙体模板支设WallFormworkInstallation3d2010-1-118:002010-1-1317:00内支撑架搭设InnerBracingFrameInstallation3d2010-1-118:002010-1-1317:00顶模铺设TopFormworkInstallation2d2010-1-148:002010-1-1517:00顶板钢筋绑扎TopSlabReinforcementFixing2d2010-1-168:002010-1-1717:00隐蔽验收ConcealedWorkAcceptance1d2010-1-188:002010-1-1817:00砼浇筑ConcretePlacing1d2010-1-198:002010-1-1917:00HG-62、HG-60段HG-62andHG-60Section25d2010-1-38:002010-1-2717:00下段LowerSection12d2010-1-38:002010-1-1417:00替代、垫层施工ConstructionofConstituteandBeddingConcrete4d2010-1-38:002010-1-617:00钢筋绑扎（包括止水钢板安装）ReinforcementFixing(includinginstallationofwaterstopsteelplate)3d2010-1-78:002010-1-917:00模板支设FormworkInstallation3d2010-1-108:002010-1-1217:00隐蔽验收ConcealedWorkAcceptance1d2010-1-138:002010-1-1317:00砼浇筑ConcretePlacing1d2010-1-148:002010-1-1417:00HG-69、HG-63段HG-69andHG-63Section28d2010-1-118:002010-2-717:00下段LowerSection11d2010-1-118:002010-1-2117:00替代、垫层施工ConstructionofConstituteandBeddingConcrete4d2010-1-118:002010-1-1417:00钢筋绑扎（包括止水钢板安装）ReinforcementFixing(includinginstallationofwaterstopsteelplate)3d2010-1-158:002010-1-1717:00模板支设FormworkInstallation2d2010-1-188:002010-1-1917:00隐蔽验收ConcealedWorkAcceptance1d2010-1-208:002010-1-2017:00砼浇筑ConcretePlacing1d2010-1-218:002010-1-2117:00施工缝划分5.DivisionofConstructionJoints按照施工图纸，HGU管沟验槽后应立即浇筑垫层，逐段施工。主体队需按照工程部编制的进度计划完成每个控制点的施工。每段在底板顶面以上500mmAccordingtotheconstructiondrawing,thebeddingconcreteshallbeplacedbysectionimmediatelyaftertheinspectionofHGUfoundationsubsoil.Themainstructureteamshallfinishtheconstructionofeverycontrol-pointaccordingtotheschedulecompiledbytheengineeringdepartment.Ahorizontalconstructionjointshallbesetatthepositionwhichis500mmupperthetopbaseslabfaceandtheconcreteofeverysectionshallbeplacedfortwotimes(theupperpartandthelowerpart).每段施工工序如下：Followingisconstructionprocessofeverysection:清基-→测量放线--→垫层施工--→搭设外架--→钢筋绑扎、安装止水胶带、止水钢板--→支设第一次砼模板--→浇筑第一次砼--→砼养护--→钢筋绑扎、安装止水胶带、预埋管--→搭设内模板支撑架--→支设第二次砼模板--→浇筑第二次砼--→砼养护--→土方回填Cleanoffoundation→setting-out→constructionofbeddingconcrete→installationofexternalscaffold→reinforcementfixing,installationofrubberandsteelplatewaterstop→installationoffirststageconcreteformwork→placingoffirststageconcrete→concretecuring→reinforcementfixing,installationofrubberwaterstopandembeddingofpipes→installationofinternalformworkbracingframe→installationofsecondstageconcreteformwork→placingofsecondstageconcrete→concretecuring→backfilling垫层及替代砼的浇筑6.PlacingofBeddingConcreteandConstituteConcrete6.1管沟垫层混凝土可根据现场具体情况分段浇筑，测量队应依据设计图纸每段找坡要求放线，管沟结构砼不再找坡。6.1Thebeddingconcreteofpipewayshallbeplacedbysectionaccordingtothesitecondition.Thesurveyteamshallbesettingoutaccordingtotherequirementofmaking-slopinthedesigndrawingandthere’snoneedtomakeslopeinthepipewaystructuralconcrete.6.2管沟垫层混凝土采用C25砼，对于超挖部位需采用替代混凝土浇筑，替代混凝土较厚的部位需分层浇筑，分层厚度为40cm。6.2TheC25concreteshallbeappliedtothepipewaybeddingconcrete.Thepartwhichisover-excavatedshallplacedwithconstituteconcrete.Iftheconstituteconcreteisthick,itshallbeplacedlayerbylayerandeachlayeris40cminthickness.6.3垫层及替代混凝土根据现场情况可采用泵车或地泵由一端向另一端逐渐推进浇筑。6.3Accordingtothesitecondition,thebeddingandconstituteconcreteshallbeplacedgraduallybypumptruckorfloortypepumpfromoneendtoanother.6.4混凝土振捣参见《砼振捣》工作程序。6.4RefertoWorkProcedureofConcreteVibrationforvibrationmethod.6.5垫层及替代混凝土浇筑后应进行浇水养护。6.5Afterplacing,thebeddingconcreteandconstituteconcreteshallbesprayedwithwaterforcuring.脚手架工程7、ScaffoldWork7.1脚手架的搭设7.1InstallationofScaffold7.1.1HGU管沟外双排架采用扣件式钢管脚手架，48×3.5钢管，立杆横距0.9m，纵距1.5m，扫地杆距根部为300mm,其它步距为1800mm，操作层平铺4块200宽木跳板，内立杆离廊道边距离7.1.1Outsidethepipeway,thedouble-rowscaffoldiscoupler-styleandmadeofF48x3.5steeltubes.Thetransversalspacingofverticalpolesis0.9m,thelongitudinalspacingis1.5m.distancebetweenbottompoleandfloorshallbe300mmandspacingofotherhorizontalpolesshallbe1800mm.Theworkingplatformshallbecoveredwith4woodenputlogswhichis200inwidth.Thedistancebetweeninternalverticalpoleandtrenchedgeshallbe400mm.7.1.2HGU管沟是分段施工，每段廊道施工时在端部位置搭设施工通道，用于施工人员及小型机具、材料的运送。7.1.2SincetheHGUpipewayisconstructedsectionbysection,constructionpassageshallbesetatthetopforconstructioncrew,smallequipment&machineryandtransportationofmaterialsduringtheconstructionofeachsection.7.1.3根据侧壁高度，外架在顶端和其他相应位置应挑出水平杆用于固定侧壁竖筋。7.1.3Accordingtotheheightofthesidewall,horizontalpolesofexternalscaffoldshallbeusedtofixthesidewallverticalrebarsatthetopandothercorrespondingpositions.7.1.4立杆的接长均采用对接扣件，立杆的对接扣件应交错布置，两根相邻立杆的接头不应设置在同步内。7.1.4Couplersshallbeappliedtoconnectuprightpipes.Couplerslayoutofdifferentverticalpolesshallbestaggered.Thecouplersoftwoneighboringuprightpolesshallnotbearrangedinthesamehorizentalspan.7.1.5同步内隔一根立杆的两个相隔接头在高度方向错开的距不宜小于500mm，各接头中心至主节点的距离不宜大于步距的1/3，严禁采用搭接。7.1.5Thedistancebetweenthetwoapartedcouplersoftheverticalpoleandthenext2neighboringpolesshallbelongerthan500mm.Thedistancebetweenthecenterofeachjointandnearestmajorjointshallnotbelongerthan1/3ofthedrawingpace.Overlapping7.1.6脚手架搭设规范规定，高度在24米以下的脚手架，必须在外立面的两端各设置一道剪刀撑，并应由底部至顶端连续设置，两组间隔距离不得大于15米，每道剪刀撑宽度不应小于4跨，斜杆与地面的倾角宜在45°~60°之间。7.1.6Accordingtothescaffoldinstallationregulation,forthescaffoldwhichislowerthan24m,astruttingshallbesetatbothendsofthefaçaderespectively.Thestruttingshallbesetcontinuouslyfrombottomtotopandthedistancebetweeneachgrouppfstruttingsshallnotbelongerthan15m.Thewidthofeachstruttingshallnotbelessthan4spans.Theanglebetweenobliquepoleandthefloorshallbetween45°to60°.7.1.7剪刀撑的接长宜采用搭接，搭接长度不应小于1m，应采用不少于2个旋转扣件固定，端部扣件盖板的边缘至杆端不应小于100mm。7.1.7Overlapconnectionshallbeappliedintheextensionofstruttingandtheoverlaplengthshallbelongerthanorequalto1m.Atleasttworotatingcouplersshallbeapllied.Thedistancebetweencoverofthetoppestcouplertothetopofofthepoleshallnotbeshorterthan100mm7.1.8脚手架搭设规范规定，当架高≤20m时，不小于40m2一个连墙点，且连墙点的竖向间距应≤6m。7.1.8Accordingtothescaffoldinstallationregulation,whenthescaffoldisnothigherthan20m,atleastoneconnectionpointtothewallshallbearrangedevery40m2andthespacingbetweentheverticalpointstothewallshallnotbelongerthan6m.7.2脚手架的使用7.2UtilizationofScaffold.1Thescaffoldonlyshallbe7.2.2作业人员在架上的最大作业高度应以可进行正常操作为度，禁止在架板7.2.2operation.Itisforbiddentoputriserblockorsinglescaffoldboardonthewoodenputlogtoincreaseoperationheight.7.2.3在作业中，禁止随意拆除脚手架的基本构架杆件、整体性杆件、连接紧固件和连墙件。7.2.3Itisforbiddentoremoveverticalpoles,horizontalpoles,thewallatrandom.Ifitisnecessarytoremovethosepolestemporarily,itshallbepermittedbypeopleinchargeandcorrespondingremedialmeasuresshallbetaken.Afterrelevantoperation,itshallberestored..4Workersoperatingonthescaffoldshallwellasotherpeopletopreventcollisionandfallingobject.Itisforbiddentoplayorrestonthescaffold..5Workersshallgettothescaffoldthroughsafe-guardedpassages.I.6Duringtheconstructionprocess,itshallbeavoidedtodamageorcontaminatethesteeltubesandcouplers.Ifthere’7.3脚手架的拆除7.3RemovalofScaffold..2Thescaffoldshallberemovedlayerbylayer.personandaguardrailorcautionnoticeshallsettopreventirrelevantpersonfromentering.Thescaffoldshallberemovedfromtoptobottom.Therail,scaffoldboard,struttinganddiagonalbracingshallberemovedfirstlyandthencomestotheputlog,legerandverticalpole.Theremovalshallbecarriedoutstepbystepandup-downconcurrentoperationisforbidden..3thelasttwocouplers.Whileremovingtheleger,diagonalbracingandstrutting,theworkersshallfirstlyloosenthemiddlecouplerandthenholdthemiddlepartofthescaffoldtoloosenthecouplersatbothends.7.3.4两侧架子之间的水平连杆应随拆除进度逐层拆除。严禁先将水平拉杆7.3.4Thehorizontaltiesbetweenthesidescaffoldsshallberemovedwiththeproscaffoldremoval.Theremovalofhorizontaltiesshallnotbecarriedoutbeforethatofthescaffold.Theheightdifferenceofsubsectionalremovalshallnotbiggerthan2spans..5Threlevantworkersshallbenotifiedtopreventthemfromfalling...7Theremovedaccessories,suchassteelpipesandscaffoldboards,shallnotbethrownawaybutbestackedrespectively.T8、模板工程8.FormworkWork8.1模板情况介绍8.1IntroductionofFormworkHGU管沟内外表面均采用不小于15mm厚胶合板，背方采用50×100木方，TheformworkusedatinteriorandexteriorsurfaceofHGUaremadebyplywoodwhichshallnotbethinnerthan15mmandthe50×100timbershallbeappliedtothebackbracing.Allformworksareassembledonsite.8.2廊道模板制作要求8.2RequirementforPipewayFormworkManufacturing宽高偏差：+2mm-3mmWidth-HeightDeviation:+2mmto-3mm对角偏差：-3mm+5mmDiagonalDeviation:-3mmto+5mm平整度：2mmFlatness:2mm其他要求见《模板制作加工程序》RefertoFormworkManufacturingandProcessingProcdure8.3模板安装8.3InstallationofFormwork8.3.1模板采用50*100木方背楞次龙骨、100*100木方和双钢管主龙骨加固，对拉螺杆、钢管斜撑固定的形式8.3.1Theformworkshallbefastenedby50×100timberwhichisactingassecondaryframe,100×100timber,dualsteelpipewhichisactingasmainframe,counter-pulledscrewandsteel-pipediagonalbracing.8.3.2第二阶段模板固定利用预埋在第一阶段混凝土中的高强螺杆定位，内墙侧模加固采用钢管斜撑和水平横撑。HGU管沟支模示意图参见8.3.2Thesecondphaseformworkshallbefastenedbythethefirstphaseconcrete.Thelateralformworkofinteriorwallshallbefastenedbysteel-pipediagonalbracingandhorizontalbracing.Refertoattacheddiagram1forHGUformworkinstallationdiagram..3Adequatediagonalbracingsshallbeplacedbetween.4Spongegluestripordouble-sidedtapeshallbeappliedmudleakage.Ifnecessary,releaseagentshallbeappliedtotheformworksurface..5垂直度:3mmPerpendicularity:3mm相邻接缝高差：2mmHeightdifferencebetweenadjacentjoints:2mm平整度：2mmFlatness:2mm上口尺寸：+2mm0mmDimensionofBackCut:+2mm0mm位置：2mmPosition:2mm8.4模板拆除8.4StrippingofFormwork侧模要在混凝土强度能保证构件不变形，棱角完整时方可拆模；而顶模要在混凝土强度达到设计强度的75%之后才能拆除（可根据现场浇筑混凝土时留置的砼块养护天数的抗压强度试验报告进行模板拆除）。Whentheconcretestrengthcanensurethatthecomponentsshallnotdeformandtheangularityofitshallbecomplete,thelateralformworkshallbestripped.Thetopformworkshallbestrippedwhentheconcretestrengthreaches75%ofthedesignedstrength(refertothecompressivestrengthtestreportofconcretetestpiecefornecessaryinformation).9.钢筋工程9.ReinforcementWork9.1钢筋材质及制作9.1ReinforcementMaterialandFabrication9.1.1钢筋的机械、化学性能应符合技术规格书（1-3）9.1.1Themechanicalandchemicalpropertiesofreinforcementshallbeinlinewiththeregulationoftechnicalspecification(1-3).Theratioofmeasuredvalueofreinforcementtensilestrengthandthatofyieldstrengthshallnotbesmallerthan1.25.Theratioofmeasuredvalueofreinforcementyieldstrengthandstrengthstandardvalueshallbesmallerthan1.3.Whenthereinforcementisfoundfragile,itsweldabilityormechanicalperformanceispoor,chemicalconstituentsofthespecificbatchofreinforcementshallbechecked.Otherspeci9.1.2钢筋应精确弯曲成图纸和钢筋简图上标明的形状和尺寸，所有的弯曲尺寸应符合有关规定，除非业主另有指示。HRB500级的钢筋的弯弧内直径不小于钢筋直径的4倍，弯钩的弯后平直部分长度应符合设计要求；9.1.3Thereinforcementshallbebentpriciselyasshowninthedrawingandreinforcementsketch.UnlessspecifiedbytheOwner,thebendingsizeofreinforcementshallbeinlin9.2钢筋保护层9.2CoverofReinforcement9.2.1廊道钢筋保护层厚度分为廊道外侧6cm、廊道内侧5cm9.2.1Outsidethepipeway,thecoverofreinforcementis6cmthickandinsidethepipeway,itis5cm9.2.2钢筋的保护层采用混凝土垫块支撑钢筋来实现，垫块用与浇筑在钢筋周围的混凝土相同的材料按相同的比例搅拌成的混凝土或相同配比的砂浆制作，并在垫块中埋入两根209.2.2Thereinforcementisprotectedbyconcretespacerblock,whichismadeofconcreteormortarwiththesamemixingratiooftheconcretepouredaroundthereinforcement.Two20#leadwiresareembeddedinthespacerblock.Whenfixingthereinforcement,theconcretespacerblockshallbefixed9.3钢筋连接9.3ReinforcementConnection9.3.1钢筋连接通常采用相互交叠的方式进行，也就是搭接；经业主批准，也可采用机械连接或焊接9.3.1Usually,overlappingshallbeappliedtothereinforcementconnection.Me.2Alltheoxidescale,rust,paint,oil,earthandothersubstanceswhichshallaffectthebondingofreinforcementandconcreteshallbecleanedbeforereinforcementis.3Whendoublelayersofreinforcementareplaced,reinforcementstirrupandtierod9.3.4钢筋的接头必须保证有设计要求的搭接长度，交接处采用18209.3.4Thereinforcementoverlappinglengthshallbeinlinewiththedesignrequirementand18#,19#,20#leadwireshallbeappliedtofixthejointstoensuredesignedshapeandcorrectpositionofreinforcementandtopreventdisplacmentduringconcreting.Bothendsofleadwireforrebarfixingshallbeburiedintheconcretecover.Ifthereinforcementjointsismechanicallyconnected,thentheconnectionshallbeinlinewithrelevantrequirementofGeneralTechnicalRegulationofMechanicalReinforcementConnection9.4钢筋的防污染保护9.4ContaminationProofofReinforcement浇混凝土前，钢筋外露部分采用塑料薄膜或塑料管包裹，以防被混凝土污染，下次浇筑时，拆除塑料薄膜即可。Beforeconcreteplacing,theexposedpartofreinforcementshallbewrappedwithplasticmembranetopreventitfromcontaminationbytheconcrete.Plasticmembraneshallberemovedwhenconcreteispourednexttime.10、混凝土工程10.ConcreteWork10.1混凝土材料和标准10.1ConcreteMaterialandStandard10.1.1水泥：采用经业主批准的水泥，水泥质量标准需符合技术规格书（1-2）要求10.1.1Cement:10.1.2碎石、砂子：混凝土骨料由现场采石场生产，碎石、砂子各级配需要量都必须分别计量后混合搅拌，不准使用单级配粒级骨料。砂子、碎石试验分别执行《普通混凝土用砂质量标准及检