預(yù)應(yīng)力灌漿試驗程序

中國核工業(yè)華興建設(shè)CHINANUCLEARINDUSTRYHUAXINGCONSTRUCTIONCO.,LTD.工程名稱PROJECT文件編碼CODE文件類別DOC.TYPE文件名稱DOC.TITLE

程序Procedure預(yù)應(yīng)力灌漿試驗程序GroutingProcedureForPre-stressingWork…A版次日期編制審核批準(zhǔn)…A版次日期編制審核批準(zhǔn)總包RevisionDatePreparedReviewedApprovedContractor修改說明Description

提交供審核ForApprovalLNGContentsLNG\l“_TOC_250009“目的 1\l“_TOC_250008“范圍 1\l“_TOC_250007“參考文件 1\l“_TOC_250006“ConstructionSpecifications施工標(biāo)準(zhǔn) 1\l“_TOC_250005“ProjectSpecifications工程標(biāo)準(zhǔn) 1施工預(yù)備 2材料預(yù)備 2\l“_TOC_250004“設(shè)備預(yù)備 2\l“_TOC_250003“施工過程 3水平管道試驗樣品制作 錯誤！未定義書簽。灌漿 錯誤！未定義書簽。試驗樣本的切斷 錯誤！未定義書簽。\l“_TOC_250002“質(zhì)量保證措施 6\l“_TOC_250001“安全保證措施 6\l“_TOC_250000“附件 7LNG儲罐工程標(biāo)準(zhǔn)化文件-預(yù)應(yīng)力灌漿試驗程序LNG儲罐工程標(biāo)準(zhǔn)化文件-預(yù)應(yīng)力灌漿試驗程序3/7頁目的施工的順當(dāng)進展，擬在現(xiàn)場制作進展模擬灌漿試驗。范圍本程序適用于XXLNG工程預(yù)應(yīng)力灌漿試驗。參考文件ConstructionSpecifications施工標(biāo)準(zhǔn)供參考〕——StandardofQualityControlofConcreteGB50164-2023《混凝土質(zhì)量把握標(biāo)準(zhǔn)》GB50164-2023；——ConcreteengineeringconstructionqualityacceptancespecificationGB50204-2023〔2023版〕《混凝土工程施工質(zhì)量驗收標(biāo)準(zhǔn)》GB50204-2023〔2023版；——CorrugatemetalductsforprestressedconcreteJG225-2023《預(yù)應(yīng)力混凝土用金屬波浪管》JG225-2023；——《Anchoragegripandcouplerforprestressingtendons》《預(yù)應(yīng)力筋用錨具、夾具和連接器》(GB14370-2023)——SpecificationforprestressconstructionofbuildingengineeringCECS180-2023《建筑工程預(yù)應(yīng)力施工規(guī)程》CECS180-2023——BuildingConstructionQualityAcceptanceStandardGB50300-2023《建筑工程施工質(zhì)量驗收統(tǒng)一標(biāo)準(zhǔn)》GB50300-2023ProjectSpecifications工程標(biāo)準(zhǔn)的技術(shù)參數(shù)或要求〕增加工程標(biāo)準(zhǔn)施工預(yù)備材料預(yù)備1灌漿試驗材料表No序號材料名稱型號/類型數(shù)量備注1波浪管2鋼絞線3熱縮膠套4錨座5錨具、夾片6灌漿帽7木方/鋼管8膠合板9水泥10外加劑11膨脹劑4.2設(shè)備預(yù)備2灌漿試驗設(shè)備表序號機具名稱規(guī)格數(shù)量備注1攪拌機2電子稱3儲漿罐4灌漿泵5灌漿管6鋼絞線解線盤7穿束機8單級千斤頂9型材切割機10砂輪切割機11灌漿試驗壓力表1212馬氏錐形測試斗13秒表14電子溫度計15量筒施工過程HorizontalTendonTestSpecimenSet-up 試樣建立試樣建立以粵東LNG工程為例，具體試樣長度以實際為準(zhǔn)。Setthe50mhorizontaltendonspecimensimilartothesketchintheAppendixbythefollowingsequences50m長的水平波浪管〔參見附件中的簡圖〕Findsuitableflatgroundareaatleast50mlong.50m長；Pourlevelingcourse.Tomakea50mlong,500mmwideand75mmthicklevelingcoursewithitsflatness±10mmwithinevery10m.75mm10米范圍內(nèi)±10mm50米Toinstallformworkonthelevelingcourseasattacheddrawing.Pave100×50mmtimberwithaspacingof500mmand12mmplywood.12mm100×50mm，500mm；Installthecorrugatedductontheformwork;在模板上安裝波浪管；Installcastingatbothductend.在管道兩端安裝錨座；ToinstallrebarperattachedsketchsectionA-A.依據(jù)附圖剖面A-A綁扎鋼筋；Installsideformworkwithitssectionaldimension250mmx250mmandsupportitfirmlyperattachedsketch.250mmx250mm的側(cè)面模板并加固牢靠；PourC25concreteintheformwork.在模板內(nèi)澆筑混凝土,C25；Ensurethehorizontalductstobecuredatleast72hbeforegrouting.在灌漿之前保證水平管養(yǎng)護至少72個小時；Cleantheductbyaircompressor.使用空壓機清理管道；Tothread27strandsintotheduct.Strandover-lengthwillbe0.5mmatthepassiveendand0.85matthedriveend.0.5m,主動端超出錨0.85m；Installanchorblockandclampsatthedeadendtobitethestrands.在被動端安裝錨固塊及錨夾，使夾片夾住鋼絞線；Installanchorblockatthestressingend,pullstraightthestrandsonebyonewithjackandfixwithanchorclamps,stressingforceis5Mpa.5MPa；Cutoffthesurplusstrandoutsidetheanchorblocksbyabrasivewheelcuttingmachine.用砂輪切割機切掉錨固塊以外多余的鋼絞線；Installgroutcapatbothends.在錨固件的兩端安裝灌漿帽；Settingofgroutpump灌漿泵就位Takesamplestocheckchangesofvolumeandbleeding.檢測水泥漿的體積變化和泌水率；PerformofGoutTrial 灌漿試驗Extendthegroutoutletpipe1mupwardandinstallvalve.將出漿孔向上延長1米并且安裝閥門；Opentheairventonthegroutcapandvalvesofinletandoutlet.翻開灌漿帽上的兩個排氣孔以及進漿孔、出漿孔的閥門；Mixingofgroutwithapprovedgrouttrialmix.用經(jīng)過批準(zhǔn)的水泥漿協(xié)作比攪拌水泥漿；Checkfluidityandtemperatureofgroutandfillingroutrecord.檢測水泥漿流淌度、溫度，填寫制漿記錄表；Maketwogroupsofcubesfortestsof7daysand28dayscompressivestrength.3728天的抗壓強度；Connectthegroutpumptotheinletvalvewitha150mgroutingpipeonthetestspecimen.使用150米長的灌漿管將灌漿泵與試件進漿孔的閥門相連；Checkgroutfluidity,temperatureandgroutingpressureattheinletrightpriortogrouting.開頭灌漿前在灌漿入口處檢測漿體流淌度、溫度和灌漿壓力；Startgroutingthroughtheinletvalve,andkeepgroutinguntilhomogeneousgroutcomingoutfromtheairventatinletend,thenclosethisairvent.排氣孔；Keepgroutinguntilhomogeneousgroutcomingoutfromtheairventatoutletend,andthenclosethisairvent.連續(xù)泵漿，至出漿端灌漿帽上的排氣孔有勻質(zhì)的漿體流出，關(guān)閉該排氣孔；Keepgroutinguntilhomogeneousgroutcomingoutfromtheoutlet.連續(xù)泵漿，至出漿孔有勻質(zhì)的水泥漿排出；Afterthegroutfluidityischeckedqualifiedattheoutlet,closeofftheoutlet,keepthepumppressureat3.5barandkeepgroutingfor1minute.3.5bar1分鐘；Closeofftheinlet.關(guān)閉進漿口；Fillingroutingtable.填寫灌漿記錄表；CuttingofTestSpecimen 試樣的切斷After5daysofthegrouttrial,seekpermissionfromtheengineeronthe7locations(SevenSection)ofthetestspecimenforsubmissiontotheengineerforapproval.在灌漿試驗5天后，在試樣實體上標(biāo)注7個將要切斷的位置。Forbidtouchingtheconcretespecimenaftergroutingandbeforecutting.灌漿后到切割前嚴(yán)禁擾動混凝土試件。Sawthetestspecimenatthepredeterminedlocationswithcuttingmachine.使用切割機在選定的位置對樣本進展切割。Examine the cut-off sections and take photograph of the test specimen submissiontotheengineerforapproval.對樣本的切斷局部檢查并拍照之后提交給設(shè)計工程師。Afterthetrial,CB&Isubmittrialreporttodesignerforapproval.試驗完成后，CB&I供給試驗報告供設(shè)計批準(zhǔn)。Theprestressingdesignerwillhavethefinalsayonthecut-offsectionsorphotographprovidedwhichareusedtodeterminethatthegrouttrialtestissuccessful。對樣本切斷局部的照片，交由預(yù)應(yīng)力設(shè)計工程師最終推斷。質(zhì)量保證措施墊層平坦度應(yīng)滿