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目錄Contents1.定義DEFINITION2.工程概況PROJETGENERAL3.編制依據(jù)和要求REFERENCEDOCUMENT4.施工程序SEQUENCEOFWORK5.安裝方法ERECTIONMETHODⅠ)準(zhǔn)備工作PREPARATIONOFWORKⅡ)基礎(chǔ)及材料驗(yàn)收FOUNDATIONANDMATERIALACCEPTANCEⅢ)鋼結(jié)構(gòu)的安裝STEELSTRUCTUREERECTIONⅣ)鋼結(jié)構(gòu)找正ALIGNMENTOFSTEELSTRUCTUREⅤ)螺栓緊固TITHINGOFBOLTSⅥ)非收縮性灌漿NON-SHRINKGROUTINGⅦ)鋼結(jié)構(gòu)焊接STEELSTRUCTUREWELDINGⅧ)補(bǔ)漆TOUCH-UPPAINTINGⅨ)質(zhì)量保證措施QUALITYASSURANCEMEASURESⅩ)施工安全措施SAFETYPRECAUTION6吊裝方法LIFTINGSTUDYⅠ)吊裝重量WEIGHTOFLIFTINGMATERIALSⅡ)吊裝圖LIFTINGDRAWINGⅢ)吊裝索具LIFTINGTACKLESⅣ)吊車起重載荷CRANECAPACITYCHART7工具和重型設(shè)備TOOLS&HEAVYEQUIPMENT8.安全工作分析表JOBSAFETYANALYSISWORKSHEET9.安全風(fēng)險(xiǎn)分析RISKASSESSMENTMETHODSTATEMENTFORCOMPRESSORSHELTERERECTION1定義DEFINITIONThismethodstatementisapplicableforsteelstructureSB1A.此方案僅限于壓縮機(jī)廠房。工程概況PROJECTGENERALThetotalweightsofsteelstructureareabout315tons。Thesteelstructurebeassembledbyhighstrengthbolt。JGCentrustedthatFabricationofsteelstructureshouldbesemifinishedproducts,transporttoinstallationsiteforinstallationafterclassified,numberedandtrialassemble.Ⅰ〕鋼結(jié)構(gòu)總重約315噸Ⅱ〕結(jié)構(gòu)的連接型式采用高強(qiáng)螺栓Ⅲ〕鋼結(jié)構(gòu)的預(yù)制由JGC委托加工成半成品構(gòu)件,分類編號(hào)并試拼裝后,運(yùn)往安裝現(xiàn)場交付安裝.3編制依據(jù)和要求PreparationReference&InstructionⅠ〕鋼結(jié)構(gòu)圖紙說明StructuralSteelConstructionSpecificationⅡ〕《鋼結(jié)構(gòu)工程施工及驗(yàn)收規(guī)范》(GB50205-2001)CodeforacceptanceofconstructionqualityofsteelstructuresⅢ〕《鋼結(jié)構(gòu)高強(qiáng)度螺栓連接的設(shè)計(jì)施工及驗(yàn)收規(guī)范》(JGJ-82)Specificationofdesign,constructionandacceptanceforhigh-strengthboltconnectionofsteelstructureⅣ〕Constructionspecificationforsteelstructure-siteerectionS-000-1643-0001Ⅴ〕Scopeoftest&inspectionandreportsteelstructureerectionS-000-1540-0301Ⅵ〕LadderinspectionprocedureS-000-1654-0019Ⅶ〕SpecificationforPaintingS-000-13A0-0001Ⅷ〕《建筑鋼結(jié)構(gòu)焊接規(guī)程》JGJ81-2002SpecificationonWeldingofBuildingSteelStructure4施工程序SEQUENCEOFWORKFoundationAcceptance—Semi-products/FabricatedPartsandMaterialAcceptance—Levelinggrout---FrameSeparatedAssemblingaccordingtoAxesandArea—Lifting—Alignment—Tighteningofbolts—Weldingworks—FinishingGrouting—Inspection—Ladder/Platform/HandrailInstallation—Touchuppaint—Handing-overandAcceptance基礎(chǔ)驗(yàn)收→成品、半成品構(gòu)件及材料驗(yàn)收→構(gòu)架分片分段組裝→座漿→吊裝→找正→螺栓緊固→焊接→灌漿→檢驗(yàn)→梯子/平臺(tái)/欄桿安裝→補(bǔ)漆→驗(yàn)收交工5.安裝方法ERECTIONMETHODⅠ)準(zhǔn)備工作PREPARATIONOFWORKTheworkersmustgettherelevantcertificateTransferinspectionandcertifiedconstructionequipmenttothefieldErectionscaffold(refertoerectionscaffoldattachmentdrawing)TheconstructiontoolsarepreparedThematerialofthescaffoldshallbeuseGB.Theconnectionformofscaffoldshallbecouplerconnection.TheWelltypeframeshallbebuilt;thetemporaryladderwillbeusedaspertheattacheddrawing1-3.Theliftingframeshallbebuiltaspertheattacheddrawing4.a)工人需持相關(guān)證件b)現(xiàn)場傳遞及施工設(shè)備證明c)施工工具準(zhǔn)備d)腳手架搭設(shè)(詳見附圖)腳手架材料采用GB腳手架連接形式為扣件連接壓縮機(jī)墻體安裝時(shí),使用臨時(shí)爬梯,詳見附圖1-3吊架搭設(shè)詳見附圖4Ⅱ)基礎(chǔ)及材料驗(yàn)收 FoundationandmaterialAcceptanceThelocationaxesoffoundation,equipmentstructureaxesandelevationandstandardofanchorboltshallcomplywithapprovedconstructiondrawings建筑物的定位軸線、基礎(chǔ)軸線和標(biāo)高、地腳螺栓的規(guī)格及其緊固應(yīng)符合設(shè)計(jì)要求。Theallowabledeviationofsupportbaseforsteelstructurecolumnshallbeaspertable1鋼結(jié)構(gòu)基礎(chǔ)允許偏差見表1Item項(xiàng)目Allowabledeviation(mm)允許偏差Supportface支撐面Elevation標(biāo)高±3.0Levelness水平度L/1000Anchorbolt地腳螺栓Centerdeviation螺栓中心偏移5.0Theallowabledeviationofbox-outconcretefoundationshallaccordwithtable2:杯口混凝土基礎(chǔ)允許偏差參表2:Item項(xiàng)目Allowabledeviation(mm)允許偏差Depth深度±5.0Verticality垂直度H/100Position位置10.0Anchorthreadboltshallfreefromdefect,allowabledeviationastable3:地腳螺栓無缺損,參表3Item項(xiàng)目Allowabledeviation(mm)允許偏差Extrudinglength露出長度±30/0.0Screwlength螺絲長度±30/0.0Centerdeviation中心偏差2.05)Thesteelstructureshallbeclean鋼結(jié)構(gòu)必須保持清潔6)Qualitycontroldepartmentandtechnicalengineerswillinspectallreceivedfabricatedpartsbefore,andafterinstallationinaccordingtorelateddrawingsandspecifications.Iffoundsomeunmatchedordiscrepanciesparts,itmustbereportedtoJGCforrectifyingbeforeinstallation.現(xiàn)場的鋼結(jié)構(gòu)件進(jìn)入后,在組裝前,按照鋼結(jié)構(gòu)布置圖和工廠制造圖的編號(hào)對(duì)應(yīng)預(yù)制件上的標(biāo)記一一查找,放在對(duì)應(yīng)的安裝位置,檢查部門會(huì)同有關(guān)技術(shù)人員按照?qǐng)D紙和規(guī)范的要求對(duì)其進(jìn)行全面檢查,若發(fā)現(xiàn)不合格品,必須向JGC申報(bào),處理合格后方可安裝就位7)Paddingafterfoundationacceptance基礎(chǔ)驗(yàn)收合格后進(jìn)行座漿。UsetheEGMforthepaddingmaterial,andhavebeenapprovedbyJGC.座漿材料采用EGM,已申報(bào)JGC批準(zhǔn)Sizeofgasketis:14×50×100墊板尺寸采用14×50×100Locationofthegasketisfollowing:墊板布置位置如下:Ⅲ)鋼結(jié)構(gòu)的安裝SteelstructureerectionTheframeofthesteelstructureshelterismultiplayer.Foravoidthebutt-weldingatheighttocarryoutthegroundpre-assemblybyonetimeandthenlifting.廠房結(jié)構(gòu)形式為多層鋼結(jié)構(gòu),為避免高空接點(diǎn)對(duì)接,根據(jù)吊車吊裝能力,可在地面一次組裝成型進(jìn)行吊裝。Fromwesttoeast,thefirstinstallationwasformainframeandwall,fourtaglineprovidedduringlifting;afterthemainframeandwallinplace,theinstallationofintermedialbeamandthefloorgratingwouldcarriedoutfromdowntoup,levelbylevel.Theconnectionbeamsthatneedfireproofedshouldhoistseparately,piecebypiece.安裝時(shí),應(yīng)自西向東先吊裝主框架和墻壁,主框架和墻壁吊裝時(shí)必須栓上四根拖拉繩;主框架和墻壁就位后,可從下往上逐層安裝連接梁和格柵板。需防火的連接梁應(yīng)單根進(jìn)行吊裝。c) Aftercompletetheerectionofcompressorgroup,andtheninstalltheintermediatebeamandpurlineroof.待壓縮機(jī)機(jī)組吊裝完畢后,屋頂方可進(jìn)行安裝連接梁和檁條。a)Baseshouldbeliftedandputinplaceaccordingtothedrawing.Thealignmentshouldbedoneaccordingtothedrawingandspecification.Duringinstallingthesteelframe,flatframewouldbeassembledontheground,combiningthemethodofliftingwithsinglepieceinstalling,theninstallauxiliarybeam,tiebeam,support,leavingmoveablebeamaccordingtotherequirementofequipmentlifting,andtightenitaftertheequipmentinstalling.Theinstalledstructureshouldhavereasonablestabilityandkeepenoughclearanceforthesteelstrength.根據(jù)圖紙將底座吊裝就位,按圖紙和規(guī)范要求進(jìn)行找正。鋼架安裝采用片狀框架地面拼裝,組合吊裝和單構(gòu)件安裝相結(jié)合的方法,后安裝次梁、聯(lián)系梁、支撐,并根據(jù)設(shè)備吊裝的要求留設(shè)個(gè)別活動(dòng)梁,待設(shè)備安裝后再緊固。已安裝的結(jié)構(gòu)應(yīng)具有可靠的穩(wěn)定性和足夠的空間鋼度。b)Suitableliftingcraneslingandothertoolscouldbechosenaccordingtothevariousweightofeachframe.Singlecranecanbeapplied;twocranesalsocouldoperatetogethertolift.Temporarybracing&stayingmustbeappliedafterallocationofportalframe.根據(jù)各片框架的重量不同可選擇不同的吊裝機(jī)索具。可采用單機(jī)吊裝,也可利用兩臺(tái)吊車配合吊裝。在安裝時(shí),可加臨固定支撐固定。c)Takingreinforcedmethodtoavoiddistortionwhenliftedpartsareturnedaround為防止構(gòu)件組合體在吊裝翻轉(zhuǎn)時(shí)產(chǎn)生變形,應(yīng)采取加固措施d)ItcouldadaptthemethodofpiecesInstallationforthesteelstructureandeachpieceshouldassembledonthegroundplatformfirst(erectionbeforeinstallation)鋼結(jié)構(gòu)構(gòu)架的安裝,可采用分段分片的安裝方法。每一片框架分別在地面平臺(tái)上組裝好,先吊裝后組裝。e)Structureframewillbedividedtoseveraltiersaccordingtoconnectionpoints.Thetwocorrespondingpiecesframeoffirstcolumnshouldbeliftedtolocation.Tietheframetwowireropesasthetemporaryfixedafterinitialadjustingandfixing.Installtheconnectionbeamoftwoframesandcarryoutthefirstadjustmentandfixit.Theninstallanothercomponent,platformandladderinthefirsttier.Installtheuppertierfollowthesameprocedureas1sttier.The1sttierdeviationshouldbeconsideredwheninstallinguppertiers.結(jié)構(gòu)架按柱的連接點(diǎn)可分為幾層。第一層柱的對(duì)應(yīng)兩片框架先吊裝就位,第一片框架就位后,框架頂部兩邊各栓上兩根鋼絲繩進(jìn)行臨時(shí)固定,待相鄰框架吊裝就位后,再安裝兩片框架間的連接梁進(jìn)行初步校正并固定;接著再安裝第一層內(nèi)的其它構(gòu)件及平臺(tái)、直梯等,然后再按第一層的安裝程序安裝上一層。安裝上一層時(shí),應(yīng)考慮下一層安裝的偏差Ⅳ)Alignmentofsteelstructure鋼結(jié)構(gòu)找正a)Theodolite,levelmeasuringtoolsandothermeasuringtoolswillbeappliedduringinstallationtoensurealldataarewithinallowance,refertotheattachment-10安裝找正應(yīng)借助于經(jīng)緯儀、水平尺等工具,確保安裝各部位幾何尺寸、垂直度、水平度等在允許偏差范圍內(nèi),具體安裝允差詳見副錄10Ⅴ)Boltstightening螺栓緊固Tighteninghighstrengthboltofsteelstructurerefertothemethodstatementofhighstrengthboltsofsteelstructure:S-B00-3162-2003鋼結(jié)構(gòu)高強(qiáng)螺栓的緊固詳見“鋼結(jié)構(gòu)高強(qiáng)螺栓施工方案”:S-B00-3162-2003Ⅵ)Non-shrinkgrouting非收縮性灌漿a〕Thegroutingisdoneatonetimeafterqualifiedalignmentandfastenofthehighstrengthbolt,andmaterialshallbesubjectedtoapprovalprioruse.找正完,對(duì)高強(qiáng)螺栓緊固后進(jìn)行灌漿工作并且一次完成。灌漿材料使用前應(yīng)提交JGC批準(zhǔn)。b〕Afterthegrouting,cleanfoundationsurfacewithwaterandkeepwetduringgrouting,removethesurfaceaccumulatedwater,andpoundcarefullytomakeconcretetofilltightlyineachparts.Payattentiontocuringaftergrouting.灌漿后,基礎(chǔ)表面用水沖洗干凈,保持濕潤。灌漿時(shí)應(yīng)清除表面積水,按照灌漿材料的供方說明書進(jìn)行灌漿和養(yǎng)護(hù)。Ⅶ)Steelstructurewelding鋼結(jié)構(gòu)焊接a〕InaccordingtothedesignrequirementandthenationalstandardtheweldingtechnicalspecificationofconstructionsteelstructureJGJ81,weldingmaterialshouldmatchtothebasematerial.Comparewiththemanufacture’sinstructionandweldingprocessdocumenttobakeandstorethematerialbeforeuse.焊接材料與母材的匹配應(yīng)符合設(shè)計(jì)要求及國家現(xiàn)行行業(yè)標(biāo)準(zhǔn)《建筑鋼結(jié)構(gòu)焊接技術(shù)規(guī)范》JGJ81的規(guī)定,并在使用前應(yīng)按照產(chǎn)品說明書及焊接工藝文件的規(guī)定進(jìn)行烘焙和存放b〕WeldingworkersmusthavethequalifiedcertificateofChina.焊接工作人員必須經(jīng)考試合格并取得合格證書。c〕Theweldingengineershouldimplementtheweldingprocedurequalificationforthestructuralbasematerial,andconfirmtheweldingprocedurebythereport。Weldermustfollowtheweldingproceduretoworkstrictly.焊接工程師應(yīng)對(duì)鋼結(jié)構(gòu)母材、焊接材料等進(jìn)行焊接工藝評(píng)定,并根據(jù)評(píng)定報(bào)告確定焊接工藝。焊工應(yīng)嚴(yán)格按照焊接工藝作業(yè)d〕Thedimensionoftheweldangleforwhichfully-meltedBWjoint,andangleBWjointastheT-joint,crossjoint,cornerjointshouldbelessthant/4.Thetoleranceoftheweldangleshouldbewithin0~4mm.T形接頭、十字接頭、角接接頭等要求溶透的對(duì)接和角對(duì)接組合焊縫,其焊角尺寸不應(yīng)小于t/4。焊角尺寸的允許偏差為0~4mme〕Ensuregoodconditionduringwelding.Weldingshouldbenotallowedtoperformunderanyoneofthefollowingconditionsandalsowithoutprotectionfacilities:焊接時(shí)應(yīng)保證焊接環(huán)境具有良好的條件,發(fā)現(xiàn)下列任何一種情況又無有效防護(hù)設(shè)施時(shí),不得施焊Heavywind:Windvelocityismorethanorequalto8m/s;大風(fēng):風(fēng)速大于或等于8m/s;Afterrainorrainingdays;雨雪:雨后或下雨;Humidity:Relativehumidityismorethan90%;濕度:相對(duì)濕度大于90%;f〕Thequalityofgrooveassemblingshouldbecheckedbeforewelding.Ifallowanceerrorexceeds,itshouldberetreatedandthenweldedagain.Humidity,greasydirtandrustinthegrooveshouldberemovedbeforewelding.焊接前對(duì)坡口組裝的質(zhì)量進(jìn)行檢查,如超過允許誤差,應(yīng)返修后再進(jìn)行焊接.焊前應(yīng)清理坡口中的水份、油污和銹等。g)Arcignitiononthesurfaceofthebusbarshouldbeprohibited;theinterlayerjointofmulti-layershouldbestaggered.嚴(yán)禁在母材表面引弧,多層焊的層間接頭應(yīng)錯(cuò)開。Ⅷ).Touch-Uppainting補(bǔ)漆Touch-Uppaintingofsteelstructurereferstothemethodstatementoftouch-uppaintingofsteelstructure:S-B00-31A2-2001鋼結(jié)構(gòu)補(bǔ)漆詳見“鋼結(jié)構(gòu)補(bǔ)漆施工方案”:S-B00-31A2-2001Ⅸ)QualityAssurance質(zhì)量保證措施a)Thematerial(steel,weldingmaterial,connectionmaterial,paintingmaterial)forthesteelstructureproduce&installationshouldhavethequalifiedcertificateandinaccordancewiththenationalstandardandthedesigndocument. 鋼結(jié)構(gòu)制作和安裝所用的鋼材、焊材、連接材料、防腐涂料等,應(yīng)具有出廠質(zhì)量證明書,并應(yīng)符合國家現(xiàn)行有關(guān)標(biāo)準(zhǔn)的規(guī)定和設(shè)計(jì)文件的要求。b)Whenthetemperature>-12℃itshouldbecorrected.Afterthatthepartlylevelofsurfaceis:ift≤14,tolerance≤1.5/1000mm;Ift>14,tolerance≤1/1000mm,andothertoleranceshouldinaccordancewiththespecification. 構(gòu)件要在施工環(huán)境溫度高于-12℃時(shí)進(jìn)行矯正。矯正后,表面局部平面度:當(dāng)t≤14,允許偏差≤1.5/1000mm;當(dāng)t>14,允許偏差≤1/1000mm,其它尺寸允許偏差應(yīng)符合規(guī)范中的規(guī)定。c)Whenthecarbonsteelareunderheatcorrect,thetemperatureshouldrefertothesteel’scharacterandcannotexcess900℃。碳素結(jié)構(gòu)鋼在加熱矯正時(shí),加熱溫度應(yīng)根據(jù)鋼材性能選定,但不得超過900℃。d)TheboltholeshouldbecleanandthedistancebetweentwoboltsoredgesandthesizeofboltshouldinaccordancewithJGJ82. 螺栓孔必須清潔,螺栓孔間距、最小邊緣距離以及螺栓孔大小應(yīng)符合規(guī)范JGJ82中的規(guī)定。e)Whenthetoleranceexcessesthespecification,theelectrodethatwillbeusedforre-weldingshallbematchedwiththebasematerial.Anewholeshallmadeafterre-welding. 當(dāng)螺栓孔的允許偏差超過規(guī)定時(shí),可采用用與母材材質(zhì)相匹配的焊條補(bǔ)焊后重新制孔。f)Strengthenmeasuringcontrolbyverifyingandadjustingmeasuringtoolsperiodicallytoensureallmeasuringtoolscorrect. 加強(qiáng)計(jì)量管理,定期對(duì)計(jì)量器具進(jìn)行校驗(yàn),保證計(jì)量器具的準(zhǔn)確度g)Settingsitequalityassurancesystemtoreinforcequalitymanagement.Qualityengineersexecuteinspectionincompliancewithdesigningdocumentandspecification. 建立現(xiàn)場質(zhì)保體系,加強(qiáng)質(zhì)量管理,質(zhì)檢工程師必須嚴(yán)格按設(shè)計(jì)文件和規(guī)范、標(biāo)準(zhǔn)要求進(jìn)行監(jiān)督檢查h)ControllingeveryprocedurebyuseofTQCmethod. 運(yùn)用TQC方法對(duì)施工的各個(gè)環(huán)節(jié)進(jìn)行控制Ⅹ)SafetyPrecaution施工安全措施1)Mustobeyallconstructionsafetyregulationsaccordingtorelatedstandardrequirements. 施工中必須遵守施工安全規(guī)程,按規(guī)范要求施工2)Havetoolsbagforsmalltoolsandcomponent.Toolsandmaterialsaretobeplacedinanorderlyfashion.Inordertohaveaspaciouswork-yardandavoidinjuries,sundriesonconstructionfieldshouldbecleaneduppunctually. 小型工具、螺栓、及連接板等小型物件在使用時(shí)應(yīng)放入工具袋內(nèi)。使用工具及材料都要安放有序,施工場地的雜物要及時(shí)清理干凈。要使工作場地有充分的活動(dòng)余地,避免碰傷或扎腳3)Checkingcomponent-aresecuredbeforerigging.Forbidstackingandhangingsmallpartsoncomponents.Strictlyfollowoperationregulationandspecification. 吊裝構(gòu)件前應(yīng)檢查綁扎是否平穩(wěn)、牢固,不得在構(gòu)件上堆放或懸掛零星物件Duringthehoistingofsteelstructure,non-operatorsareforbiddentoenterthehoistingarea.Operatorsarenotallowedtostandundertheliftingarmorneartheframe.Workersshouldwearsafetyhelmet,fastensafetyharnessandlifeline(seeattachment9)andusesafeaccess(seefigure1-4)forhighwork.在鋼結(jié)構(gòu)吊裝時(shí),吊裝區(qū)域內(nèi)非工作人員嚴(yán)禁入內(nèi),工作人員不準(zhǔn)站在吊臂下面和框架附近。工作人員應(yīng)戴安全帽,高空作業(yè)時(shí)應(yīng)系安全帶,使用安全通道.安全通道詳見附圖1-4,生命線架設(shè)詳見附圖95) Keepthedistancebetweenallforthesteelconstructionwork,suchasweldingmachine,oxygen,acetylenecylinder.Andputtheminasafearea.鋼結(jié)構(gòu)施工需許多設(shè)備,如電焊機(jī)、氧、乙炔瓶等,這些設(shè)備要放在安全的地方,并保持一定的距離。6)Jointofstructuremustbefixedaftercomponenthoistingandsetsteadily.Itisforbiddentoloosentheliftinghookwithoutagreementofthepersoninchangeandtheadjustingpersonnel. 構(gòu)件起吊就位放穩(wěn)后,應(yīng)將接頭固定,未經(jīng)指揮及校正人員同意不得松鉤7)Motor-drivenmachineriesandequipmentusedforconstructionmustbeearthedandcentralizedforeasytofieldmanagement.Damagedwiresandcablesmustbediscardedandtakestrictprecautionsagainstelectricleakage. 施工用的電動(dòng)機(jī)械和設(shè)備均須接地,絕對(duì)不允許使用破損的電線或電纜,嚴(yán)防設(shè)備漏電。施工用電器設(shè)備和機(jī)械的電纜需集中在一起,便于現(xiàn)場管理8)Whenworkingathigherplace,riggingworkshouldbestoppedifwindspeedisover10m/s.It’sforbiddentoworkcontinuouslyifwindspeedisover15m/s. 高空施工,當(dāng)風(fēng)速為10m/s時(shí),吊裝工作應(yīng)停止。當(dāng)風(fēng)速達(dá)到15m/s時(shí),所有工作均須停止LIFTINGSTUDY吊裝方法1)Weightofliftingmaterials吊裝重量Pre-assembled(orframed)steelstructureongroundpleaserefertofollowingtable4:地面拼裝好準(zhǔn)備安裝的成片鋼結(jié)構(gòu)參照表4:AreaAxesElevation(m)Dimension(m)EstimatedliftweightCranetypeSB1A1B1-B20.218.16*1.210.51202B1-B20.218016*1.210.51203B1-B20.218.16*1.210.51204B1-B20.218.16*1.210.51205A-B20.218.16*6.716.51206B1-B20.218.16*1.210.51207B1-B20.218.16*1.210.51201D1-D20.218.16*1.210.51202D1-D20.218.16*1.210.51203D1-D20.218.16*1.210.51204D1-D20.218.16*1.210.51205D1-D20.218.16*1.210.51206D1-D20.218.16*1.21
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