lng墙体施工方案书-施工方案

FujianLNGTerminalandTrunklineProjectMethodStatementforCrackscontrolmethodofmassconcrete______________________________________________REVISION:APAGE:13/4802009.10.6张晓斌廖明强刘俊B2009.9.25张晓斌廖明强刘俊A2009.9.2张晓斌廖明强刘俊版次Rev.日期Date编制PreparedBy审核ReviewedBy批准ApprovedByCBI业主/监理Owner/Supervisor修改说明提交供审核RevisionDescription.IFC(IssueforConstruction)中国核工业华兴建设公司CHINANUCLEARINDUSTRYHUAXINGCONSTRUCTIONCO.福建LNG一期新增3#、4#储罐工程FJLNGPhaseIAdditional#3And#4TanksProject液化天然气低温储罐土建工程LNGCryogenicTankCivilWorks编码CODEFJLNG-CO2-HUAX-014文件类别Doc.Type方案MethodStatement文件名称Doc.Title福建LNG罐混凝土墙体施工方案MethodStatementfortheConcreteWallofFJLNGTank页码PageABCDEFG页码PageABCDEFG0111122133144155166177188199201021FujianLNGphrase1Additional3#&4#TanksProjectMethodStatementfortheConcreteWallofLNGTank______________________________________________REVISION:0PAGE:48/48CHANGERECORDPAGEREVISION DESCRIPTIONOFREVISIONAIssueforReviewBIssueforReview0IFC

REVISIONTABLEPAGEREVISIONPAGEREVISIONAPPENDIXREVISIONAAA1X26X1X2X27X2X3X28X3X4X29X4X5X30X5X6X31X6X7X32X7X8X33X8X9X34X10X35X11X36X12X37X13X38X14X39X15X40X16X41X17X42X18X4319X4420X4521X4622X4723X4824X4925X50

目录ContentTOC\o"1-2"\h\z1. General概述 62. Scope范围 63. References参考文献 73.1. Drawing图纸 73.2. Specifications规范 114. Constructionpreparation施工准备 114.1. Personnel人员 114.2. Constructionmaterials施工主要材料 114.3. Constructionequipmentandtools施工机具 115. Constructionmethodology施工方法 145.1. Constructionsequence施工顺序 145.2. Surveycontrol测量控制 155.3. Installationofembeddedparts预埋件安装 175.4. Rebarfabricationandfixing钢筋制作及安装 215.5. Pre-stressingducterection预应力管道安装 255.6. Formworkerection模板支设 255.7. STRIKINGOFFORMWORK拆模 375.8. Horizontalconstructionjointstreatment水平施工缝的处理 385.9. Concretework混凝土浇注工作 395.10. TemporaryConstructionOpening临时施工洞口 416. ContingencyPlans应急方案 427. Controls控制 428. Access通道 439. TRAINING培训 4410. Safetyplanforwallconstruction墙体施工安全方案 4510.1. Physicalbarriertobeinstalled安装硬围护 4510.2. ClimbingofDokaformwork多卡模板爬升 4510.3. Fallprotection防坠落保护 4510.4. Accessandemergencyaccess通道和紧急通道 4610.5. Electricalsafetymeasure用电安全措施 4610.6. Badweatherplan坏天气计划 4611. Appendix附件 47

General概述ThismethodstatementisestablishedtodefineconstructionmethodfortheconcretewallofFJLNGphrase1Additional3#and4#Tanksproject.此方案适用于福建LNG一期新增3#和4#储罐工程混凝土墙体施工方案。Scope范围Variationsofsequenceormethodmayevolveastheworkprogresses,whichwillmaximizeefficiencyanduseofavailableequipmentandresources.ArevisedMethodstatementwillbeissuedforvariationsinworkpractice.施工顺序或方法会随工程进展而改动，以便最大化的提高资源使用效率。Thetankwalliscircularonplan,tankheightof50054mm,1000mmthicktaperingdownto550mmthickataheightof6750mm.Theinnerradiusofwallis41000mm,theouterradiusis41550mm,andthethicknessofstandardwallis550mm.TheconcreteC50willbeusedforthewall,reinforcedwithhighyieldsteelreinforcementonthefacesofthewallandcryogenicreinforcementjustbeusedontheinnerfaceoflift2.罐体墙体为圆形,罐高50054mm,在高度6750mm范围内，罐厚从1000mm渐变到550mm.墙体内径为41000mm,外径为41550mm,标准墙体厚度为550mm。墙体使用C50混凝土，墙体钢筋高屈服钢筋，第二层墙体内侧使用低温钢筋。PostTensioningisappliedtohorizontalandverticalpre-stressingductsbuiltintothewalls.预应力适用于墙体的水平和竖直预应力管道。Thedescriptionoftendonprestressingandductgroutingwillbeaddressedinseparatedmethodstatement.预应力和孔道灌浆的描述参见单独的施工方案。Duringconstructionofthewall,weldingjointsanddeformationofinsertscontrolshallbeperformedbythemechanicalsubcontractorinaccordancewiththerelevantspecification,otherworkshallbecarriedoutbycivilcontractor.Themechanicalsubcontractorshallusetheaccessandplatformsetbycivilsubcontractorforweldingofinserts.在罐筒体施工过程中，预埋件焊接连接和变形控制措施工作由机械分包商按照相关规范执行，其余相关工作均由土建分包商完成。机械分包商进入筒体执行预埋件焊接时，可利用土建分包商设置的通道和操作平台。Constructionwillbe11liftsofthefollowingheights:施工每层高度：LiftNoHeight(mm)ConcreteDosage(m³)1337579023375621338005874380058753800587638005877380058783800587938005871037755841111-1227553411-21100437References参考文献Drawing图纸GeneralArrangement总体安排DD-DWG-TS-ST-025101Tank＃TS-T-02-03Orientation3#罐定位图 DD-DWG-TS-ST-025102-01Tank＃TS-T-02-04Orientation4#罐定位图 DD-DWG-TS-ST-025102-02OuterPasteonLiner衬里的外部粘贴材料 DD-DWG-TS-ST-025122OuterLinerEmbedDetails外罐衬里预埋件详图DD-DWG-TS-ST-025123-01OuterLinerEmbedDetailsatTCO临时洞口外罐衬里预埋件详图DD-DWG-TS-ST-025123-02OuterLinerEmbedDetails外罐衬里预埋件详图DD-DWG-TS-ST-025123-033"OuterBottomInsulationPurgeN133"外罐底隔热层排气管N13 DD-DWG-TS-ST-025192OuterLinerEmbedDetails外罐预埋件详图 DD-DWG-TS-ST-0251392"DiaPres.Equalization-N14A/B&N20A/B2"稳压管N14A/B&N20A/B DD-DWG-TS-ST-025194TemporaryOuterLineRainGutter临时外排水管 DD-DWG-TS-ST-02ER5CompressionBarAnchor抗压钢筋锚固件 DD-DWG-TS-ST-025158EmbedmentPlatesforEscapeLadder逃生梯预埋件 DD-DWG-TS-ST-025270EmbedmentPlatesforEscapeLadder逃生梯预埋件 DD-DWG-TS-ST-025271EmbedmentPlatesforMainStairway主要通道预埋件 DD-DWG-TS-ST-025272EmbedmentPlatesforMainStairway主要通道预埋件 DD-DWG-TS-ST-025273EmbedmentPlatesforMainPipeRack主管支架预埋件 DD-DWG-TS-ST-025274-01EmbedmentPlatesforMainPipeRack主管支架预埋件 DD-DWG-TS-ST-025274-02EmbedmentPlatesforFirewaterPiping消防管道预埋板DD-DWG-TS-ST-025275EmbedPlatesforCircumferentialHandrail环形栏杆预埋件图纸DD-DWG-TS-ST-025277Embedplatesforroofwalkway穹顶走道预埋件DD-DWG-TS-ST-025280Roofembeddimensions穹顶预埋件尺寸DD-DWG-TS-ST-025284Roofembeddimensions穹顶预埋件尺寸DD-DWG-TS-ST-025285Circumferentialhandrail环形栏杆DD-DWG-TS-ST-025321ConcreteTankElevation混凝土罐体立面图 DD-DWG-TS-ST-025400ReinforcingSteelBendDetails钢筋弯曲详图DD-DWG-TS-ST-025411ConcreteWallReinforcement混凝土墙体钢筋 DD-DWG-TS-ST-025415StarterBarArrangement@Buttress扶壁柱处插筋布置图 DD-DWG-TS-ST-025416ConcreteWallReinforcementArrangement@Buttress扶壁柱混凝土墙体钢筋布置图DD-DWG-TS-ST-025417ConcreteWallPre-stressDetails混凝土墙体预应力详图 DD-DWG-TS-ST-025418TemporaryConstructionOpening(ConcreteWall)临时施工洞口(混凝土墙体) DD-DWG-TS-ST-025419Concreteroofreinforcement混凝土穹顶钢筋 DD-DWG-TS-ST-025420Generalnote总说明DD-DWG-TS-ST-0253000Anchoragesdetailsandwalltypicalsection锚具详图和墙体截面图DD-DWG-TS-ST-0253001WallPlanandSections墙体平面和截面图DD-DWG-TS-ST-0253002HorizontalPrestressLayout(sht1)水平预应力分布图（1）DD-DWG-TS-ST-0253003HorizontalPrestressLayout(sht2)水平预应力分布图（2）DD-DWG-TS-ST-0253004Setting-outforhorizontalprestressducts水平预应力管定位DD-DWG-TS-ST-0253005Horizontalprestresslayoutatwallbuttress扶壁柱水平预应力分布图DD-DWG-TS-ST-0253006Verticalprestresslayout(U-shapedducts)竖向预应力分布(U形管)DD-DWG-TS-ST-0253007Verticalprestresslayout(U-shapedducts)竖向预应力分布(U形管)DD-DWG-TS-ST-0253008Verticalprestresstypicalsetting-outofsteelpipe竖向预应力钢管定位DD-DWG-TS-ST-0253009Setting-outplanofsteelpipesforverticalprestressducts(sht1)竖向预应力管钢管定位平面图（1）DD-DWG-TS-ST-0253010Setting-outplanofsteelpipesforverticalprestressducts(sht2)竖向预应力管钢管定位平面图（2）DD-DWG-TS-ST-0253011Setting-outplanofsteelpipesforverticalprestressducts(sht3)竖向预应力管钢管定位平面图（3）DD-DWG-TS-ST-0253012Setting-outplanofsteelpipesforverticalprestressducts(sht4)竖向预应力管钢管定位平面图（4）DD-DWG-TS-ST-0253013Setting-outforverticalprestressduct竖向预应力管定位DD-DWG-TS-ST-0253014Verticalprestress-Typicalsteelpipedetails&atbuttresssetting-out竖向预应力-钢管详图及扶壁柱处的定位DD-DWG-TS-ST-0253015Verticalprestresssteelpipeatopening-Detals临时洞口的竖向预应力钢管详图DD-DWG-TS-ST-0253016Connectiondetailofprestressductsatopening临时洞口的预应力管连接详图DD-DWG-TS-ST-0253017Tankwallpre-stressingsequence墙体预应力张拉顺序DD-DWG-TS-ST-0253018Specifications规范ProjectSpecificationforCast-in-PlaceConcreteConstructionforCryogenicStorageTank低温储罐现浇混凝土规格书 DD-SPC-TS-ST-02504ProjectSpecificationforPre－stressMaterialsandInstallation预应力材料及安装规范 DD-SPC-TS-ST-02505Constructionpreparation施工准备Personnel人员Relevantstaffandcrewsareallthroughmobilizationtrainingandtechniquetraining.Specialworkersareallwithspecialworkcertificates.Thefuturemobilizedpersonnelalsowillbetrained.相关管理人员和施工人员已经经过进场培训，特种操作人员持有相应的特种操作证书，相关施工人员和管理人员已经经过相应的技能培训，后续进场人员会按照既定的培训计划进行进场培训和技能培训。Constructionmaterials施工主要材料Therecentlynecessaryconstructionsmaterialshavealreadyarriveatjobsiteandqualifiedaftertestandreadyforusage.Thefuturemobilizedmaterialswillalsobetestedandacceptedasperspecificationsandapprovedforusageafterbeingtestedqualified.目前所需施工主要材料已经报批进场，并检验合格，正式施工时可以投入使用。后续材料会按照规范要求进行材料进场验收，合格后方可投入使用。Constructionequipmentandtools施工机具Apartofwallconstructionequipmentandtoolshavealreadygettojobsitebeinginstalled,acceptedandused.Thefutureequipmentandtoolsalsowillbetestedforacceptancebeforebeingused.Theequipmentandtoolsatjobsitenowareasfollows:墙体所需施工机具部分进场安装完毕，并通过验收，且已经投入使用。后续设备会按照现场要求进行验收，合格后投入使用。已经进场的设备和施工机具见下表：砼搅拌运输车TruckMix中国China平板货车Lorry中国ChinaDumpTruck中国China拖头Tractor中国ChinaEQ4150J（25t）拖板Trailer中国ChinaSE9410（25t）LY9381（20t）汽车吊MobileCrane中国China25t塔式起重机TowerCrane中国China21CJ21021CJ290TC6515C-12ETC7052砼搅拌站BatchingPlant中国ChinaHZS50B（50m3砼布料机ConcretePlacingBoom中国China振捣棒Vibrator中国China大型移动式钢筋剪切生产线rebarcuttingproductline中国China钢筋大弧弯曲机RebarLargeArcBendingMachine美国AmericaKRB11#34自动钢筋弯曲机RebarBendingMachine中国ChinaXGW-40木工圆锯机CarpenterCircularSaw中国ChinaMJ-106A木工平面刨carpenterplane中国ChinaMB-504水泵pump中国China高压水枪Highpressurewaterjet中国China猫王1.35MPa吸尘器Vacuum中国ChinaWVD2002水准仪Level瑞士徕卡NA728全站仪TotalStation瑞士TCR702手提圆盘电锯PortablecircularSaw中国ChinaC235电钻ElectricalDrill中国ChinaJIZSD05--13A交直流电焊机ElectricalWeldingMachine中国上海ShanghaiChina逆变电焊机ReverseWeldingMachine中国China空压机AirCompressor中国China抽水泵WaterPumping中国China装载机loadingTruck中国China皮带运输机Conveyer中国China波纹管加工机械中国ChinaConstructionmethodology施工方法Constructionsequence施工顺序Previouslift前一层Rebarmatspre-fabrication预制钢筋网片Previouslift前一层Rebarmatspre-fabrication预制钢筋网片Treatmentofconstructionjoint施工缝处理Rebarmatsandinsertsinstallation钢筋网片和预埋件安装Horizontal/verticalsheathinstallation水平/垂直预应力管安装FixingRebarsatthebuttress附壁柱钢筋绑扎LiftingandInstallingtheinnerformwork内模板提升和安装Adjustingandfixinginsertsandducts预埋件与预应力管道校正与固定Cleaning,liftingandinstallingtheouterformwork外模板清理、提升和安装Concretemixingandtransporting混凝土搅拌与运输Surveycheckingandreporting测量检查和报告Jointinspectionandacceptance联合检查和验收Moisteningofconstructionjoint施工缝润湿Concretepouring,roughingconstructionjointandcuring混凝土浇筑、施工缝冲毛和养护Removingformworkandapplyingcuringcompound模板拆除和刷养护剂Geometricalsurveyandsurfaceinspection&treatment罐体测量和表面处理Nextliftcommencement开始下一层Installationofrebarmats,insertsandductsfornextlift下层钢筋、预埋件和管道安装Surveycontrol测量控制Aftertheconcreteatcentralareaofpilecapreachedenoughstrength,thesurveyteamshallsetthecenterpointaccuratelybyusingthesurveycontrolpointsapprovedbyContractor.Andthiscenterpointshallbeusedforsurveycontroloftankdiameterandverticalityduringconstructionofthewall.Thedetailedcontrolmethodsareasfollows:在中心区底板混凝土达到一定强度后，由测量人员通过总承包商批准的测量控制点精确测定罐底板中心点，在罐筒体施工过程中利用该点对罐体直径和墙体垂直度进行测量控制。具体控制方法如下：Duringbaseslabconstruction,atcenterpoint,usetotalstation(LaikaTCR702,Precision2mm+2ppm)todeterminetankbaseslabborderlineandtheradiusofinnerandouterrangelineanddirectionalline.在基础施工阶段，在中心点用全站仪（徕佧TCR702测距精度2mm+2ppm）测定储罐基础边线和墙体内外定位线的半径，和定向方位线。Inwallconstructionperiod,usesurveytower(detailedplanrefertoappendix14)andlaserplumbaligner(doacircumferentialsurveyupwards,standardtoleranceis1/45000;surveydiameterlinedownwards,max.toleranceis1/2000)toleadbaseslabcenterpointtotheheightneededfortotalstationerection.Thensurveyradiusandverticalityofeverypieceofformworkwithtotalstationwithoutprism(withoutprismcouldreduceman-madeerrors).Duringconcretepouring,doacircumferentialsurveyevery1/3heightconcretepouredanddosomeadjustmentifnecessarytocontroltankverticality,radiananddiameter.Asperwallconstructionrequirement,surveyandleaddirectionallineupeverytwolifts.在墙体施工阶段，使用测量专用塔架（塔架制作参照附件14）、激光垂准仪（向上一测回标准偏差1/45000，向下对径观测极限误差1/2000），将底板上的圆心点引测到架设全站仪所需的高度，再用全站仪通过无棱镜测量（使用无棱镜可以减少扶棱镜的人为误差）每一块模板的半径和垂直度。砼浇筑过程中，每浇筑1/3高度进行一次全圆测量，发现问题及时调整，直至浇筑完成，以此来控制储罐墙体的垂直度、弧度和直径。根据墙体施工需要每两层将定向方位线向上引测一次。Surveyisakeyissueduringthewallconstruction.Surveypointsmustbeplacedoneachinnerformworkpanel(topandbottom).Innerformworkpanelsshallbeadjustedandfixedaccordingtothesurveyor’sinstructions.Verticalityandpositionoftheverticalinsertsshallbecheckedoncefixedontotheshutter.建筑墙体最关键的是要做好测量工作。测量点必须置于内模板上下，内模板则需根据测量员的指示进行调整和固定。在把竖直预埋件装到模板前，需先检查预埋件是否竖直，位置是否正确。Duringpouring,surveyorshallcontinuouslymonitortheshutteringsothatadjustmentofformworkpanelsmaybedoneduringconcretepouringifrequired。浇注时，测量员需时刻监视模板支撑，如需调整，则可在混凝土浇注过程中进行。Aftershutteringremoval,fullsurveyofthewallliftshallbeperformedinordertocheckalltolerancesspecifiedintheprojectspecification.AformalwrittenreportshallbethensubmittedtotheQCmanager,constructionmanager,technicalmanagerandthesurveyengineerforreviewandapproval.模板拆除后，全面检查分层表面是否符合规范中规定的误差，且必须向质量控制经理，施工经理，技术经理以及测量工程师递交书面报告以便复查评估。Installationofembeddedparts预埋件安装General总则Contractorshallprovideallinsertsusedinthetank.Themechanicalsubcontractorshallweldtheconnectionjointsandadjustthedeformationcausedbywelding.Thecivilsubcontractorshallinstallandfixtheinsertsinaccordancewiththerequirementofdrawingsandspecification.承包商负责供应罐体所用全部预埋件，机械分包商负责焊接连接和焊接变形校正，土建分包商负责根据图纸和规范要求将预埋件安装和固定。Principally,steelplateofinsertsshallnotbewelded.SpotweldingcanbeusedtoweldthestudofinertandthefixingmaterialwithagreementofCBIrepresentative.Theembedmentwillnotbeweldedonwallrebars.StudsarenottobebentwithoutapprovalbyCBI.预埋件安装原则上不允许在预埋件钢板上施焊或引弧，在CBI代表同意时可将固定用金属材料与预埋件上锚固筋点焊，并且不与墙体钢筋焊接，没有CBI的批准预埋件禁止弯折。Verticalinserts竖直预埋件Vapourbarrierinsertswillbefixedwithfitmentsthatwerepreviouslyinstalledthroughformworktoensurethattheinsertisheldinpositionfirmlyduringconcretingoperations.隔汽预埋件通过一个穿透模板的固定件进行固定以保证在混凝土作业过程中不会移位。Theverticalinsertshallbefixedtemporarilybysteelwireafterhoistedtoplacebytowercranetokeepthedeviationoflocationandverticalitywithinthedesignrequirement.Thejointofinsertsshallbeweldedbythemechanicalsubcontractor,andtheninsertsshallbecheckedandqualifiedbeforeliftingandinstallingtheinnerformwork.Usesteelclampsandtierodstopulltheinsertcloselycontactthesurfaceofformwork.RefertoDetail1ofAppendix1.Thetierodwillpassthroughpre-drilledholesintheformworkandheldtheinsertinpositionusingawasherandwingnut.Thewingnutwillbehandtighteneduntiltheinsertpositionisfixedbyuseoftotalstationandthenfullytightened.垂直预埋件用塔吊吊至安装位置后可用铁丝进行临时固定，使埋件位置和垂直度偏差满足设计要求。埋件连接处由机械分包商进行焊接，然后由测量人员对埋件进行检查，符合规范要求后，即可将内模板提升安装，通过穿透模板的螺杆和钢夹具将埋件拉动紧贴内模表面。见附件1中详图1。螺杆穿过模板上预先钻透的孔并用垫片和蝶形螺母使埋件就位，蝶形螺母先用手拧紧，在全站仪检查位置准确后再最终紧固。Ifitisfoundthatthereisagapbetweentheinsertandformwork,theinsertwillbepushedintocontactbywayofarebarwhichoneendiscoveredwithC50concreteblock.RefertoDetail2ofAppendix1.如果发现预埋件与模板之间留有空隙，须用一端套有C50混凝土块的钢筋将预埋件压紧，使两者接触。见附件1中详图2。Horizontalinserts水平预埋件Thefirsthorizontalinsertislocatedatalevelof+515mmabovethepilecap,itssegmentalcomponentswillbeheldinplacebytyingthestudweldedontherearfacetotherebarbycivilsubcontractor.Thesegmentsshallbeweldedtogetherbythemechanicalsubcontractorpriortoconcreting.第一层水平预埋件埋于底板之上+515mm标高处。土建分包商通过将焊于预埋件背面的锚固钉与附近钢筋捆绑来固定预埋件。在混凝土施工前由机械分包商将各部件焊接成一个整体。Shoulditbefoundnecessarytopushthehorizontalstripstotheformworkface,thiswillbedonebyconcretespacerbetweentheinsertstripandtherebarorbyuseofthreadedrodandplate.水平板条必须抵至模板面，则须在预埋件板条和钢筋间放置混凝土隔离块，或者使用螺杆和钢板。

Thesecondhorizontalinsertislocatedat4867mmabovethepilecap.Itssegmentalcomponentswillbepositionedbyusingsteelclamps.RefertoAppendix2Afterweldingtogether,itwillbepulledtocloselycontactthesurfaceofformworkbyusingclampsandtierodthroughtheformwork.RefertoAppendix2.Thelastjointwillbeweldeduntiltheadjustingworkisfinishedandthetolerancemeetstherequirementsofspecification.第二件水平预埋件应安装在底板之上4867mm，用钢夹具将其逐个定位详见附件2。在焊接后，用夹钳和螺杆穿过模板将其拉到紧贴模板面详见附件2。调整完毕且误差符合规定后方可焊接最后的接缝。Thethirdhorizontalinsertislocatedinthetopoflift10.Duetotheweightofthiscomponent,theverticalinsertswillsupportit.第三个水平预埋件的位置在第10层顶部。考虑到此部件的重量，竖直预埋件可以将其支撑住。Thesequenceofinstallationofhorizontalinsertsshallbeasfollows:水平预埋件安装顺序如下：Theverticalinsertshallbeinstalledandfixedontherebarnetfirmlybysteelclamps.竖直预埋件应安装于钢筋网上，用钢夹具固定；Thecomponentofhorizontalinsertshallbehangedtositonthetopofverticalinsertsandconnectedbyweldingandfixedontherebarnetbysteelclamps.单个水平预埋件吊装放置在竖直预埋件之上并互相焊牢，用钢夹具固定于钢筋网上；Afterthelocationandradiuscheckedandqualified,jointsbetweenadjacentcomponentsshallbeweldedassoonaspossibleexceptthelastone.安装位置及半径检查并确认合格后，尽快焊接各个相邻部件的接缝，直至留下最后一个接缝；Theinnerformworkpanelsshallbeinstalledfromtheoppositelocationofthelastjointtotwosidesandtheinsertsshallbepulledtocontactthefaceofformworkbysteelclamps.内模板从最后一个接缝的对面开始向两边安装。用钢夹具将预埋件拉至紧贴模板面。Thelastjointcanbeweldedonlyafterthelocationandradiusofhorizontalinsertischeckedandqualified.水平预制件的位置与半径都已经过检查并确认合格后方可焊上最后的接缝。Insertsforpiperackandescapeladder管道及逃生梯预埋件Theinsertsforpiperackandescapeladdershallbeinstalledandfixedontherebarnetfirmlybysteelclamps.Themethodforfixingissimilarasthehorizontalinserts.管道及逃生梯预埋件应用钢夹具安装并固定于钢筋网上，固定方法与水平预埋件相似。Cleaningofinsertsafterpouring浇筑后预埋件清理Afterconcreting,immediatelyusesteelbrushtocleantheslurryandotherwastesoninserts.当混凝土浇筑完毕后应立即用钢刷清理预埋件表面的灰浆及其他杂物。Rebarfabricationandfixing钢筋制作及安装General概述Reinforcementshallbecutorbentasshowninthebarbendingschedule.钢筋都应照钢筋下料单所示进行切割或弯曲。Thisoperationwillbecarriedoutonsite,andwillbeinspectedfulltimebyourrepresentative.这一操作应现场进行，由我方代表全程监督。Eachbundleofbarsshallbeclearlytaggedwithbarmarknumberandsize.每捆钢筋上都有标签，明确标出该捆钢筋的数量与尺寸。Allcry-barwillbecutandpaintedattheendswithredpaintfordistinguishing.切割低温钢筋时在两端涂上红色油漆以示区别。Thewallreinforcementwillbepre-fabricatedintomats,comprisingseparateinnerandoutermats.Fromsecondlift,installrebarbyprefabricatedrebarmat.Generallyspeakingtherebarmatwidthwillbe12000mmwhichisthestandardrebarlength,andtheheightofrebarmatcanrefertoappendix9:wallverticalrebarsplicingsketch.先将墙体钢筋制成彼此独立的内外两种钢筋片。从第2层起墙体钢筋用预制网片形式进行安装,总的来说，内外墙钢筋片的宽为一个12000mm的标准钢筋长度，高度可参见附件9：墙体竖向钢筋搭接示意图Buttresseswillbefixedin-situasthelayoutofrebardoesnotlenditselftopre-fabrication.现场安装扶壁柱钢筋.Topreventlateraldriftoftherebarsystemalternateverticalbarsofthewallsectionwillbesetinaregularpatterntotheleftorrightofthebarbelow.为防止钢筋结构的侧向移动,墙体部分的相互交错的钢筋将按照规则的方式放置在钢筋下方的左侧或右侧。Allhorizontalbarswillbestraightwithalternatematsplacedaboveorbelowtheadjacentmattoavoidthematsclimbing.所有相邻的水平钢筋网相互交替布置，以避免钢筋网往上爬升。Ascheduleofmatswillbepreparedshowingthelocationofeachtype.编制钢筋网表，标明显示出每种类型的位置。Thefirstliftofthewallwillbefixedin-situasthelayoutdoesnotallowforprefabrication.Stirrupswillbeplacedbetweentheinnerandoutermatstomaintainthegeometryofthewall.按照布置图不允许预制，墙体的第一层钢筋将在现场固定。拉筋将设置在内外钢筋网之间以维持墙体的几何性。Pre-fabricationarea预制场地Fabricationofwallmatswillbecarriedoutonarackandonelevatedgroundadjacenttothetank.在临近罐体的一块平整场地上，按照一定间隔布置条形垫块，进行墙体钢筋网片制作。5rebarmatforms(Refertoappendix3forfabricationdrawing)willbefabricatedneartowercraneforfabricatingrebarmatasperdesignedwallradian.现场在塔吊附近准备制做5个网片制作模板（拟加工的钢筋网片制做模板见附件3）用于钢筋网片的制作，按照墙体设计的弧度制做墙体钢筋网片。Oncompletionofrebarfabricationofeachmat,thematwillbecheckedforacceptanceoffabricationonlyandsignedoffbyQC.Oncesignedoffatagshowinginstallationlocationwillbeattachedtosignifythematisacceptableforincorporationintotheworks.Anotherinspectionwillbecarriedoutafterthematthasbeeninstalledinposition.在钢筋网制作完成后，质量控制部门将检查预制情况并签字，附上标签标示出安装位置，表示钢筋网可用于施工，网片安装完毕将进行安装的验收。Completedmatswillbeliftedfromthestorageareatothewallbytowercranewithliftingbeamaftercleaning.钢筋网的清洁后，将用塔吊从储存区域提升到墙体处。Buttressrebar扶壁柱钢筋Thebuttressreinforcementwillnotbeprefabricated.First,installinnerrebarmat,theninstallouterverticalrebar,thenouterhorizontalrebarandtiebaratlast.扶壁柱钢筋不进行预制，在内侧钢筋网安装之后，安装外侧竖直钢筋，再安装外侧水平钢筋，最后安装拉筋。Erectionmats钢筋网片安装Thesequencesoferectionhavebeenaddressedinsection5.4.1above.安装顺序已在章节5Therebarmatswillbeinstalledbynearbytowercrane.Theangleofinstallation,elevationandweightofrebarmatswillbemarkedonmats.钢筋网片用附近的塔吊进行安装，每个网片上标示出网片安装的角度、标高和网片的重量Twohorizontalbeamswillbefabricatedforliftingrebarmats.Refertoappendix4fordetaileddrawingandliftingbeamstrengthcalculation.制作两个用于钢筋吊装的横吊梁，具体见附件4：包括横吊梁强度计算书。Fixrebarmatonliftingbeamwith2guyropesforbalancingrebarmatsduringbeingliftedupandputdown.将钢筋网片固定于横吊梁上，并设置2根牵引绳用于控制钢筋网片的在空中的摆动。牵引绳仅在钢筋网片上升和下降阶段用于牵引钢筋网片。Matswillbehoistedtoapositionslightlyaboveandinfrontoftheirfinaldestination.钢筋网吊至悬于待装位置的前上方，稍稍高出。Thematswillbeliftedalongaradiallineuntilcontactismadewiththematorcageintowhichitmeshesandthenloweredintocontactwiththeconcreteofthepreviouspour.Thematswillbetiedasnecessarytothestarterbarsfromthepreviouspouroncompletionoftyingallverticalbarstostarterbarstheconstructionsupervisorwillgiveinstructiontotheriggerthattheliftingbeamcanbereleased.HSEmeasuresrefertorelativeJHAfordetails.沿径向升降钢筋网片，待钢筋网接触到所接合的另一钢筋网，再降低高度使其慢慢达到规定高度。钢筋网全部垂直筋需要与下一层插筋绑扎在一起后，工长才能告知起重指挥可以松开起重臂，安全控制措施请参照相应的JHA。Techniquecontrolforrebarmatserection钢筋网安装技术控制措施Checkserialnumbers,positionsandqualityofrebarmatspriortoinstallation.Unqualifiedandunclearlymarkedrebarmatsshouldnotbeinstalledbeforemodificationandacceptance.网片安装前对网片的编号、位置、质量符合性进行检查，对于制作不合格的和标示不清楚的网片在进行整改验收后才能进行安装。Checkwallstarterbarpriortorebarmatinstallation.Adjustimproperspacingforsmoothconnectiontorebarmat.网片安装前对墙体插筋进行检查，对间距等不合适的地方进行调整，以便与网片钢筋顺利搭接。CheckrebarmatfixingtoensureitmeetsHSErequirements.检查网片的加固情况，使之满足HSE的要求。Donotlooseliftinghookuntilrebarmatconnectstostarterbarsfirmlyandfixed,assignedpersontobewelltrainedforhookloosening.钢筋网片与墙体插筋对接时要从水平钢筋一侧移动到位，与插筋绑扎牢固并进行加固后才能去掉吊钩，拆卸吊钩将有专门训练的人员完成。HSEmeasurerefertorelativeJHAfordetails.具体安全措施参见相应的JHA。Pre-stressingducterection预应力管道安装Pleaserefertoprestressingductinstallationprocedurefordetailedconstructionmethod具体施工方法参见相关的预应力管道安装程序。Formworkerection模板支设Type类型TheselectedtypeofformworkisDokaType150climbingformwork.Themajorcomponentsoftheformworksystemare:Refertoappendix5所选模板为Doka150爬升模板。模板系统主要由以下组成：见附件518mmthickplywood18mm厚的胶合板FormingWoods模板木材DokaFormworkBeamsH20-N多卡模板梁H20-NSteelWalingsTypeWS10钢支撑WS10Pre-AssemblyofFormworkPanels模板组装Themethodofpre-assemblyofpanelsisbrieflydescribedbelow.TheassemblyofthepanelswillbecarriedoutuponinstructiongivenbyaDokaengineer.以下为模板组装介绍。模板组装将在多卡模板讲师进行指导后进行。Profilingoftheformingtimbers,tobecarriedoutonsite现场进行木材的压型Placementofsteelwalers钢围檩安装Fixingoftheformingtimberstothesteelwalers把造型木固定到围檩上Fixingoftheformworkbeams安装木工字梁PlacingofplywoodonDokaformworkbeams胶合板安装到木工字梁上Fixingofothersitemsastheplatformandliftingarrangements平台和吊装使用的其他部件安装Theformswillbeassembledinapreparedareaadjacenttothetank,eachformworkontheinsideoroutsidetobepaintedwithuniquenumber.罐体附近区域组装模板,内、外模将喷漆编号用以区分。PlacementandAlignmentofFormwork模板放置与调整Theprocedureforplacingandaligningtheformworkwillbe,briefly,asfollows:以下为模板放置和调整程序：Thepre-assembledpanelswillbepositionedbytowercrane,ontothepreviouslypouredtankbaseforlift1andontotheclimbingbracketforallotherpours.预先拼装好模板使用塔吊定位，第1层定位在罐基础上，其他浇注层定位到爬升牛腿上Theformworkwillbecleanedandreleaseagentapplied.模板用脱模剂清除干净。Forlift1,usesupportinstalledbyexpansionboltstofastformwork.Forsubsequen