lng墙体施工方案

02009106张晓斌廖明强刘俊B2009925张晓斌廖明强刘俊A200992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REVISIONDESCRIPTIONIFCISSUEFORCONSTRUCTION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FJLNGPHASEIADDITIONAL3AND4TANKSPROJECT液化天然气低温储罐土建工程LNGCRYOGENICTANKCIVILWORKS编码CODEFJLNGCO2HUAX014文件类别DOCTYPE方案METHODSTATEMENT文件名称DOCTITLE福建LNG罐混凝土墙体施工方案METHODSTATEMENTFORTHECONCRETEWALLOFFJLNGTANK版次REV页码PAGEABCDEFG版次REV页码PAGEABCDEFG0111122133144155166177188199201021CHANGERECORDPAGEREVISIONDESCRIPTIONOFREVISIONAISSUEFORREVIEWBISSUEFORREVIEW0IFCREVISIONTABLEPAGEREVISIONPAGEREVISIONAPPENDIXREVISIONAAA1X26X1X2X27X2X3X28X3X4X29X4X5X30X5X6X31X6X7X32X7X8X33X8X9X34X10X35X11X36X12X37X13X38X14X39X15X40X16X41X17X42X18X4319X4420X4521X4622X4723X4824X4925X50目录CONTENT1GENERAL概述62SCOPE范围63REFERENCES参考文献731DRAWING图纸732SPECIFICATIONS规范114CONSTRUCTIONPREPARATION施工准备1141PERSONNEL人员1142CONSTRUCTIONMATERIALS施工主要材料1143CONSTRUCTIONEQUIPMENTANDTOOLS施工机具115CONSTRUCTIONMETHODOLOGY施工方法1451CONSTRUCTIONSEQUENCE施工顺序1452SURVEYCONTROL测量控制1553INSTALLATIONOFEMBEDDEDPARTS预埋件安装1754REBARFABRICATIONANDFIXING钢筋制作及安装2155PRESTRESSINGDUCTERECTION预应力管道安装2556FORMWORKERECTION模板支设2557STRIKINGOFFORMWORK拆模3758HORIZONTALCONSTRUCTIONJOINTSTREATMENT水平施工缝的处理3859CONCRETEWORK混凝土浇注工作39510TEMPORARYCONSTRUCTIONOPENING临时施工洞口416CONTINGENCYPLANS应急方案427CONTROLS控制428ACCESS通道439TRAINING培训4410SAFETYPLANFORWALLCONSTRUCTION墙体施工安全方案45101PHYSICALBARRIERTOBEINSTALLED安装硬围护45102CLIMBINGOFDOKAFORMWORK多卡模板爬升45103FALLPROTECTION防坠落保护45104ACCESSANDEMERGENCYACCESS通道和紧急通道46105ELECTRICALSAFETYMEASURE用电安全措施46106BADWEATHERPLAN坏天气计划4611APPENDIX附件471GENERAL概述THISMETHODSTATEMENTISESTABLISHEDTODEFINECONSTRUCTIONMETHODFORTHECONCRETEWALLOFFJLNGPHRASE1ADDITIONAL3AND4TANKSPROJECT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。2SCOPE范围VARIATIONSOFSEQUENCEORMETHODMAYEVOLVEASTHEWORKPROGRESSES,WHICHWILLMAXIMIZEEFFICIENCYANDUSEOFAVAILABLEEQUIPMENTANDRESOURCESAREVISEDMETHODSTATEMENTWILLBEISSUEDFORVARIATIONSINWORKPRACTICE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,1000MMTHICKTAPERINGDOWNTO550MMTHICKATAHEIGHTOF6750MMTHEINNERRADIUSOFWALLIS41000MM,THEOUTERRADIUSIS41550MM,ANDTHETHICKNESSOFSTANDARDWALLIS550MMTHECONCRETEC50WILLBEUSEDFORTHEWALL,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。POSTTENSIONINGISAPPLIEDTOHORIZONTALANDVERTICALPRESTRESSINGDUCTSBUILTINTOTHEWALLS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,OTHERWORKSHALLBECARRIEDOUTBYCIVILCONTRACTORTHEMECHANICALSUBCONTRACTORSHALLUSETHEACCESSANDPLATFORMSETBYCIVILSUBCONTRACTORFORWELDINGOFINSERTS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LIFTNOHEIGHTMMCONCRETEDOSAGEM13375790233756213380058743800587538005876380058773800587838005879380058710377558411122755341111211004373REFERENCES参考文献31DRAWING图纸GENERALARRANGEMENT总体安排DDDWGTSST025101TANKTST0203ORIENTATION3罐定位图DDDWGTSST02510201TANKTST0204ORIENTATION4罐定位图DDDWGTSST02510202OUTERPASTEONLINER衬里的外部粘贴材料DDDWGTSST025122OUTERLINEREMBEDDETAILS外罐衬里预埋件详图DDDWGTSST02512301OUTERLINEREMBEDDETAILSATTCO临时洞口外罐衬里预埋件详图DDDWGTSST02512302OUTERLINEREMBEDDETAILS外罐衬里预埋件详图DDDWGTSST025123033“OUTERBOTTOMINSULATIONPURGEN133“外罐底隔热层排气管N13DDDWGTSST025192OUTERLINEREMBEDDETAILS外罐预埋件详图DDDWGTSST0251392“DIAPRESEQUALIZATIONN14A/BSURVEYDIAMETERLINEDOWNWARDS,MAXTOLERANCEIS1/2000TOLEADBASESLABCENTERPOINTTOTHEHEIGHTNEEDEDFORTOTALSTATIONERECTIONTHENSURVEYRADIUSANDVERTICALITYOFEVERYPIECEOFFORMWORKWITHTOTALSTATIONWITHOUTPRISMWITHOUTPRISMCOULDREDUCEMANMADEERRORSDURINGCONCRETEPOURING,DOACIRCUMFERENTIALSURVEYEVERY1/3HEIGHTCONCRETEPOUREDANDDOSOMEADJUSTMENTIFNECESSARYTOCONTROLTANKVERTICALITY,RADIANANDDIAMETERASPERWALLCONSTRUCTIONREQUIREMENT,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。SURVEYISAKEYISSUEDURINGTHEWALLCONSTRUCTIONSURVEYPOINTSMUSTBEPLACEDONEACHINNERFORMWORKPANELTOPANDBOTTOMINNERFORMWORKPANELSSHALLBEADJUSTEDANDFIXEDACCORDINGTOTHESURVEYORSINSTRUCTIONSVERTICALITYANDPOSITIONOFTHEVERTICALINSERTSSHALLBECHECKEDONCEFIXEDONTOTHESHUTTER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,FULLSURVEYOFTHEWALLLIFTSHALLBEPERFORMEDINORDERTOCHECKALLTOLERANCESSPECIFIEDINTHEPROJECTSPECIFICATIONAFORMALWRITTENREPORTSHALLBETHENSUBMITTEDTOTHEQCMANAGER,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。53INSTALLATIONOFEMBEDDEDPARTS预埋件安装531GENERAL总则CONTRACTORSHALLPROVIDEALLINSERTSUSEDINTHETANKTHEMECHANICALSUBCONTRACTORSHALLWELDTHECONNECTIONJOINTSANDADJUSTTHEDEFORMATIONCAUSEDBYWELDINGTHECIVILSUBCONTRACTORSHALLINSTALLANDFIXTHEINSERTSINACCORDANCEWITHTHEREQUIREMENTOFDRAWINGSANDSPECIFICATION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,STEELPLATEOFINSERTSSHALLNOTBEWELDEDSPOTWELDINGCANBEUSEDTOWELDTHESTUDOFINERTANDTHEFIXINGMATERIALWITHAGREEMENTOFCBIREPRESENTATIVETHEEMBEDMENTWILLNOTBEWELDEDONWALLREBARSSTUDSARENOTTOBEBENTWITHOUTAPPROVALBYCBI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。532VERTICALINSERTS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。THEVERTICALINSERTSHALLBEFIXEDTEMPORARILYBYSTEELWIREAFTERHOISTEDTOPLACEBYTOWERCRANETOKEEPTHEDEVIATIONOFLOCATIONANDVERTICALITYWITHINTHEDESIGNREQUIREMENTTHEJOINTOFINSERTSSHALLBEWELDEDBYTHEMECHANICALSUBCONTRACTOR,ANDTHENINSERTSSHALLBECHECKEDANDQUALIFIEDBEFORELIFTINGANDINSTALLINGTHEINNERFORMWORKUSESTEELCLAMPSANDTIERODSTOPULLTHEINSERTCLOSELYCONTACTTHESURFACEOFFORMWORKREFERTODETAIL1OFAPPENDIX1THETIERODWILLPASSTHROUGHPREDRILLEDHOLESINTHEFORMWORKANDHELDTHEINSERTINPOSITIONUSINGAWASHERANDWINGNUTTHEWINGNUTWILLBEHANDTIGHTENEDUNTILTHEINSERTPOSITIONISFIXEDBYUSEOFTOTALSTATIONANDTHENFULLYTIGHTENED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,THEINSERTWILLBEPUSHEDINTOCONTACTBYWAYOFAREBARWHICHONEENDISCOVEREDWITHC50CONCRETEBLOCKREFERTODETAIL2OFAPPENDIX1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。533HORIZONTALINSERTS水平预埋件THEFIRSTHORIZONTALINSERTISLOCATEDATALEVELOF515MMABOVETHEPILECAP,ITSSEGMENTALCOMPONENTSWILLBEHELDINPLACEBYTYINGTHESTUDWELDEDONTHEREARFACETOTHEREBARBYCIVILSUBCONTRACTORTHESEGMENTSSHALLBEWELDEDTOGETHERBYTHEMECHANICALSUBCONTRACTORPRIORTOCONCRETING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。THESECONDHORIZONTALINSERTISLOCATEDAT4867MMABOVETHEPILECAPITSSEGMENTALCOMPONENTSWILLBEPOSITIONEDBYUSINGSTEELCLAMPSREFERTOAPPENDIX2AFTERWELDINGTOGETHER,ITWILLBEPULLEDTOCLOSELYCONTACTTHESURFACEOFFORMWORKBYUSINGCLAMPSANDTIERODTHROUGHTHEFORMWORKREFERTOAPPENDIX2THELASTJOINTWILLBEWELDEDUNTILTHEADJUSTINGWORKISFINISHEDANDTHETOLERANCEMEETSTHEREQUIREMENTSOFSPECIFICATION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。THETHIRDHORIZONTALINSERTISLOCATEDINTHETOPOFLIFT10DUETOTHEWEIGHTOFTHISCOMPONENT,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ATHEVERTICALINSERTSHALLBEINSTALLEDANDFIXEDONTHEREBARNETFIRMLYBYSTEELCLAMPS竖直预埋件应安装于钢筋网上，用钢夹具固定；BTHECOMPONENTOFHORIZONTALINSERTSHALLBEHANGEDTOSITONTHETOPOFVERTICALINSERTSANDCONNECTEDBYWELDINGANDFIXEDONTHEREBARNETBYSTEELCLAMPS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；CAFTERTHELOCATIONANDRADIUSCHECKEDANDQUALIFIED,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；DTHEINNERFORMWORKPANELSSHALLBEINSTALLEDFROMTHEOPPOSITELOCATIONOFTHELASTJOINTTOTWOSIDESANDTHEINSERTSSHALLBEPULLEDTOCONTACTTHEFACEOFFORMWORKBYSTEELCLAMPS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。ETHELASTJOINTCANBEWELDEDONLYAFTERTHELOCATIONANDRADIUSOFHORIZONTALINSERTISCHECKEDANDQUALIFIED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。534INSERTSFORPIPERACKANDESCAPELADDER管道及逃生梯预埋件THEINSERTSFORPIPERACKANDESCAPELADDERSHALLBEINSTALLEDANDFIXEDONTHEREBARNETFIRMLYBYSTEELCLAMPSTHEMETHODFORFIXINGISSIMILARASTHEHORIZONTALINSERTS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。535CLEANINGOFINSERTSAFTERPOURING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。54REBARFABRICATIONANDFIXING钢筋制作及安装541GENERAL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。ALLCRYBARWILLBECUTANDPAINTEDATTHEENDSWITHREDPAINTFORDISTINGUISHING切割低温钢筋时在两端涂上红色油漆以示区别。THEWALLREINFORCEMENTWILLBEPREFABRICATEDINTOMATS,COMPRISINGSEPARATEINNERANDOUTERMATSFROMSECONDLIFT,INSTALLREBARBYPREFABRICATEDREBARMATGENERALLYSPEAKINGTHEREBARMATWIDTHWILLBE12000MMWHICHISTHESTANDARDREBARLENGTH,ANDTHEHEIGHTOFREBARMATCANREFERTOAPPENDIX9WALLVERTICALREBARSPLICINGSKETCH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BUTTRESSESWILLBEFIXEDINSITUASTHELAYOUTOFREBARDOESNOTLENDITSELFTOPREFABRICATION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。THEFIRSTLIFTOFTHEWALLWILLBEFIXEDINSITUASTHELAYOUTDOESNOTALLOWFORPREFABRICATIONSTIRRUPSWILLBEPLACEDBETWEENTHEINNERANDOUTERMATSTOMAINTAINTHEGEOMETRYOFTHEWALL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。542PREFABRICATIONAREA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。5REBARMATFORMSREFERTOAPPENDIX3FORFABRICATIONDRAWINGWILLBEFABRICATEDNEARTOWERCRANEFORFABRICATINGREBARMATASPERDESIGNEDWALLRADIAN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,THEMATWILLBECHECKEDFORACCEPTANCEOFFABRICATIONONLYANDSIGNEDOFFBYQCONCESIGNEDOFFATAGSHOWINGINSTALLATIONLOCATIONWILLBEATTACHEDTOSIGNIFYTHEMATISACCEPTABLEFORINCORPORATIONINTOTHEWORKSANOTHERINSPECTIONWILLBECARRIEDOUTAFTERTHEMATTHASBEENINSTALLEDINPOSITION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。543BUTTRESSREBAR扶壁柱钢筋THEBUTTRESSREINFORCEMENTWILLNOTBEPREFABRICATEDFIRST,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。544ERECTIONMATS钢筋网片安装THESEQUENCESOFERECTIONHAVEBEENADDRESSEDINSECTION541ABOVE安装顺序已在章节541中列出。THEREBARMATSWILLBEINSTALLEDBYNEARBYTOWERCRANETHEANGLEOFINSTALLATION,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TWOHORIZONTALBEAMSWILLBEFABRICATEDFORLIFTINGREBARMATSREFERTOAPPENDIX4FORDETAILEDDRAWINGANDLIFTINGBEAMSTRENGTHCALCULATION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。THEMATSWILLBELIFTEDALONGARADIALLINEUNTILCONTACTISMADEWITHTHEMATORCAGEINTOWHICHITMESHESANDTHENLOWEREDINTOCONTACTWITHTHECONCRETEOFTHEPREVIOUSPOURTHEMATSWILLBETIEDASNECESSARYTOTHESTARTERBARSFROMTHEPREVIOUSPOURONCOMPLETIONOFTYINGALLVERTICALBARSTOSTARTERBARSTHECONSTRUCTIONSUPERVISORWILLGIVEINSTRUCTIONTOTHERIGGERTHATTHELIFTINGBEAMCANBERELEASEDHSEMEASURESREFERTORELATIVEJHAFORDETAILS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。545TECHNIQUECONTROLFORREBARMATSERECTION钢筋网安装技术控制措施CHECKSERIALNUMBERS,POSITIONSANDQUALITYOFREBARMATSPRIORTOINSTALLATIONUNQUALIFIEDANDUNCLEARLYMARKEDREBARMATSSHOULDNOTBEINSTALLEDBEFOREMODIFICATIONANDACCEPTANCE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。CHECKWALLSTARTERBARPRIORTOREBARMATINSTALLATIONADJUSTIMPROPERSPACINGFORSMOOTHCONNECTIONTOREBARMAT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。55PRESTRESSINGDUCTERECTION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。56FORMWORKERECTION模板支设561TYPE类型THESELECTEDTYPEOFFORMWORKISDOKATYPE150CLIMBINGFORMWORKTHEMAJORCOMPONENTSOFTHEFORMWORKSYSTEMAREREFERTOAPPENDIX5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DOKAFORMWORKBEAMSH20N多卡模板梁H20NSTEELWALINGSTYPEWS10钢支撑WS10562PREASSEMBLYOFFORMWORKPANELS模板组装THEMETHODOFPREASSEMBLYOFPANELSISBRIEFLYDESCRIBEDBELOWTHEASSEMBLYOFTHEPANELSWILLBECARRIEDOUTUPONINSTRUCTIONGIVENBYADOKAENGINEER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。563PLACEMENTANDALIGNMENTOFFORMWORK模板放置与调整THEPROCEDUREFORPLACINGANDALIGNINGTHEFORMWORKWILLBE,BRIEFLY,ASFOLLOWS以下为模板放置和调整程序THEPREASSEMBLEDPANELSWILLBEPOSITIONEDBYTOWERCRANE,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,USESUPPORTINSTALLEDBYEXPANSIONBOLTSTOFASTFORMWORKFORSUBSEQUENTLIFTSALIGNMENTWILLBEACHIEVEDUSINGTHEBUILTINSCISSORJACKSONTHEMAINPLATFORM对于第一层，需要在底板上用膨胀螺栓安装支撑件作为模板加固。对于后面几层来说，用剪刀撑在主平台上进行调整。THEINNERFORMWORKWILLBEAPPROXIMATELYALIGNEDBYPLUMBINGFROMTHEPOURBELOWAFTERROUGHALIGNMENT,THEFINALALIGNMENTWILLBEACHIEVEDUSINGATOTALSTATIONSETUPATTHECENTEROFTHETANKUSEOFATOTALSTATIONWILLENSURETHATCORRECTALIGNMENTISACHIEVEDATALLLIFTSOFTHECONSTRUCTION内模使用铅垂从底部浇注层进行调直。在初调后，用放在罐体中心位置的全站仪进行终调。用全站仪可以确保各施工层的调整位置准确。THESPACERSBETWEENOFTHEINNERANDOUTERFORMSWILLMAINTAINTHEALIGNMENTOFTHEOUTERFORMCONCRETEBLOCKSTOBEUSEDASTHESAMEDESIGNMIXOFWALLCONCRETEWITHDIMENSIONOF505050MMOR10050MM内外模板之间放置的垫块保持外模板的整齐，垫块采用与墙体同配合比的混凝土预制，尺寸505050MM或者10050MM。564FORMWORKINSTALLATIONOFLIFT11第11层模板安装THESEQUENCEOFFORMWORKINSTALLATIONOFLIFT11SHALLBEASFOLLOWS第11层模板安装顺序及细节如下见附件6SEEAPPENDIX6BEGINNING开始SCABBLINGOFTHECONCRETEJOINTSURFACE施工缝表面凿毛OUTERFORMWORKSHALLREMAINCLOSEONAFTERLIFT10CONCRETINGANDROOFSHALLBERAISEDANDWELDEDONTHECOMPRESSIONRINGSTRUCTURE第10层浇筑后外墙模板不动，穹顶顶升并且焊接于压缩环形结构上。REBARSPROTRUDINGPLACEDASPERREQUIREMENTSONTHEDRAWINGS突出钢筋按照图纸要求布置。REMOVALOFINNERFORMWORKCAREISTOBETAKENTOENSURETHATTHEANCHORISFULLYSCREWEDHOME然后将锚固板旋入定位锥体。旋入时须仔细，确保锚固板完全旋入THELOCATIONANDCONDITIONOFTHESEALINGSLEEVE,POSITIONINGCONEANDSTOPANCHORWILLBECHECKEDBYQCBEFORE/DURINGCONCRETING,CORRECTIVEACTIONSHALLBETAKENIMMEDIATELYWHENANYFAILUREISFOUND在浇铸混凝土以前及过程中，QC人员须对固定板、封装套、定位筒及制动器的位置及状况进行检查，若有错误发生，立即进行修正。5662POSTCONCRETINGINSPECTIONOFPOSITIONINGCONE混凝土浇注后定位锥体的检查THEPOSITIONINGCONEISTOBEREMOVEDFROMTHECONCRETE将定位锥体移出混凝土。THENOMINATEDCARPENTERWILLTHENCHECKTHEDIMENSIONFROMTHETIPOFTHEANCHORTHREADINGTOTHEFACEOFTHECONCRETETOENSURETHATTHECLIMBINGCONECANBEFULLYSCREWEDHOMEANDTIGHTENED然后让指定的木工对从锚固件螺纹顶端至混凝土面的各尺寸进行检查以确保爬升锥体可以完全旋入上紧。IFANYIRREGULARITYISNOTICEDDURINGTHECLIMBINGCONEINSTALLATION,THEINSTALLERWILLIMMEDIATELYINFORMTHESUPERVISOR如若在爬升锥体的安装过程中发现不正常情况，安装工人须立即告知工长。NOFORMWORKWILLBERAISEDONTOTHECLIMBINGCONESUNTILTHEINSTALLATIONHASBEENCHECKEDANDACCEPTEDBYQCFORALLTHEFORMWORKSTOBERAISED安装完毕，经质检员检查并同意提升模板后，方可将模板安置于爬升锥体上。57STRIKINGOFFORMWORK拆模APPROX12HOURSAFTERTHECOMPLETIONOFTHEPOURTHETHROUGHBOLTSWILLBE“CRACKED”,BUTTHEFORMWORKWILLBELEFTINPOSITION在浇注完成12小时后，直通螺杆要松开。但是模板仍留在原处。THEREMOVALOFFORMWORKWILLNOTTAKEPLACEPRIORTOTHESPECIFIED72HOURS,BUTGENERALLYAFTERSTEELFIXINGOFINNERANDOUTERMATSOFTHENEXTLIFTHASBEENCOMPLETED在规定的72小时之前，不能进行模板拆除。而是在下一层内外钢筋网安装完成之前。REMOVALOFTHETHROUGHBOLTS直通螺杆的拆除。REMOVALOFTHEFISHPLATECONNECTORSBETWEENFORMPANELS模板间连接板的拆除PULLBACKOFTHEFORMPANELSUSINGTHESCISSORJACKS用剪刀撑撤离模板。THEFORMSWILLBECLEANEDWHENINTHEPULLBACKPOSITION撤离的时候对模板进行清扫。CLIMBINGOFTHEFORMSTOTHENEXTLIFTUSINGTHETOWERCRANES用塔吊将模板升到下一层。ONCOMPLETIONOFLIFT10,THEINNERFORMSWILLBEREMOVEDTOASTORAGEAREATOBEDISMANTLEDTHEINNERPLATFORMSWILLBERAISEDTOBEUSEDFORTHEERECTIONOFHORIZONTALINSERTTHEINNERPLATFORMWILLBEREMOVEDONCOMPLETIONOFTHEINSERTWORK在第10层完工时，内模板将搬移到储存区进行拆除。内平台将提升起来，用作水平预埋件的支设。内平台将在预埋工作完成时进行拆除。AFTERM