外文翻译三.docx

外文翻译三.docx

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外文翻译三

roductionandpreventionandcureofthecrackofskyscraper

Alongwiththespeedingoftownhouseconstructionstep,notafewareaswithsmallresidencessetuponeafteranother,manyinhabitantsmovecontinuouslyintothenewresidence,theirqualitytohousingrequestismoreandmorehigh,particularlypayattentiontoverymuchtosomecrackscircumstanceswhichsprinklebuildingplanktoappearnow,worrythesecracks'aringendwillcauseinsecuritytrouble,butinsuccessiontobuildingqualitydirectthesectionhurltell.

Suchasoncethesomecitydevelopacompanytosetup6layersoffloorresidence16totally,constructingareaabout100,000squaremeters,thebrickmixsstructure,thebeginningrepairs,onesteps2boxoffwiththebrickwall,eachone'sestablishingaturnofbeamtogetherbuildingplankistogetherwholetosprinkle,theplankthick100mms,concretemarknumberisC20,houselongaboutwith80-90ms,don'testablishflexiblesew,firstflooristhe2.2mgaragelayer,theC20reinforcingbarcageofthefoundationadoptioninfusestonoteastake.It'ssmallarea'sturntocompleteworkinOctober,2003,finishingconstructionacceptance,didn'tdiscoverobviouscrack,discoverthebuildingplankappearscrackwhentheinhabitantrepair,pastjointlytoqualitydirectthesectionhurltell,throughsteptoseeonthespot,16housesallexistthedepthdifferentcrack.Thecrackwidthisbetweenthe0.2mmsmms-0.4ses,thegreatmajorityofthecrackpositionisplacedinplankfourCapes,thedynastysunismoreobvious.Hence,theSuperintendentofficeofqualityconcerned,sinkingtodeclinequantityandinclinationdegreetocarryonareexaminationtothehousefirst,resultallinallowthescope,againlookintoconstructiondiagrampapertoalsomatchtorequestconcerningthenorm.Owingtoabove-mentionedcircumstance,passbyhardanalytical,theconfirmationcrackreasonhasthefollowingwhattime:

1,causenowmainreasonofsprinklingtheplankcrackistheconstringencyofconcrete,theconcreteisinthenaturethehardeningtheprocess,becausewaterevaporatescontinuously,butthephysicalvolumegradualconstringency,buttheplankisonallsidestobesubjectedtoastipulationof,can'tflexfreely,sowhentheconstringencyofconcretecausetosprinkleknotholestipulationnowshouldthedintexceedcertainlimit,certanlywillcausetosprinkleplanktoopencracknow.AndthecrackparttakeplacemuchatshouldthedintmoreconcentratedCapeintheplace-plank,butismutuallyperpendicularwiththeOvercastanglelineofwall

2,constructtooearlyonthecast-in-placeboard,addandcarryonone'sshoulderorbackthecrackcaused."normofinspectionofqualityofstructuralconstructionofconcrete"stipulates,beforetheconcreteintensityreaches1.2N/mm2,can'ttrampleorinstalltemplateandsupportonit.Butdeveloper,forraceagainsttime,catchupwithprogress,orconcreteat,congealandcongealstageafterallforthefirsttimestillinwateratthegoodcast-in-placeboardjust,takeupthepostofpurposetotrample,carrythematerial,concentrateonpilingupfragmentofbrick,mortar,template,etc..Prematureaddingandiscarriedonone'sshoulderorback,hascausedthecrackofcast-in-placeboardartificially.

3,thecrackwhichthetemperaturechangecauses.Aseverybodyknows,thecementcondensesandhardensfastatroomtemperature,thecharacteristicsuchasbeinggreatofheatofhydration,especiallyinsummer,aftertheconcreteisbuilt,thereleaseamountoftheheatofhydrationisgreat,theconcreteisunderthehightemperature,can'tgetandwatermaintenanceintime,anddesiccateandshrink,makeconcretetakeplacedrytosplit,resultinfracturingfinally.Investigationfindinthemajorityboardcornercrackin,tanbythesuntowardsthefrontdirectlythesun.

4,thehouseiscrossedtoolongtosetuptheessentialexpansionjoint,isthereasonwhichcausesthecracktoo.Thedeveloperisinordertosavetheland,oftentakethelengthofthehouseintoaccount,makethehousewholetoolong,setupexpansionjointeither,becauseoflackessentialexpansionjoint,freedomflexibledegreeinhousereachorexceedshouldsetupintervalthatexpansionjointrequire,,willpresentthecracktoo.

5,theboardisdefeatedbythemuscleandsunkinthecrackproduced.Inthecourseofconstructing,becauseconstructorsoperatebarbarously,tramplethereinforcingbararbitrarily,causeandshoulderthemuscleandsink,theantiabrasionlayeristoobig,reducethesectionaleffectiveheightoftheboard,makethebearingcapacityoftheboardunabletoreachtherequirementofonesthatdesign,thuscausetheproductionofthecrackofboard.

Effectiveheight,makethebearingcapacityoftheboardunabletoreachtherequirementofonesthatdesign,thuscause