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1、ThebridgecrackhasthereasonbriefanalysisAuthor:OrderInrecentyears,ourprovincetransportationinfrastructureobtainedtheswiftandviolentdevelopment,eachplacehasconstructedthemassiveconcretebridge.Inthebridgeconstructionandtheuseprocess,concernsbecauseofappearsthecrac
2、kbuttoaffecttheprojectqualityeventoleadthereportcommonoccurencewhichthebridgebreaksdowncollapses.Theconcretedehiscencemaysayis"oftenistakenbad"and"frequently-occurringdisease",ispuzzlingthebridgebuildingtechnicalpersonnelfrequently.Actually,ifadoptsthecertainde
3、signandtheconstructionmeasure,verymanycracksaremayovercomeandcontrol.Inordertofurtherstrengthenstotheconcretebridgecrackunderstanding,avoidsintheprojectappearingtheharmbigcrackasfaraspossible,thisarticlethereasonwhichandproducestotheconcretebridgecracktypemakes
4、thecomprehensiveanalysis,thesummaryasfaraspossible,byfacilitatesthedesign,theconstructiondiscoversthecontrolcrackthefeasiblemeans,achievestheguardinnothoweverfunction.Lconcretebridgecracktype,originInfact,theconcretestructuralcracksoriginiscomplexandthereareman
5、ykindsoffactors,eventheyaffectitmutually,buteachcrackhasittohaveonekindoforseveralkindofmainreasons.Theconcretebridgecracktype,asthereasonitproduced,maydividethefollowingseveralkindsapproximately:First,theloadcausescrackTheconcretebridgeisstaticintheconvention,
6、movesthecrackwhichundertheloadandthesecondarystressproducestocalltheloadcrack,inducesmainlyhasthedirectstresscrack,thesecondarystresscracktwokinds.Thecrackwhichoutsidethedirectstresscrackisreferstowhichtheloadtocausethedirectstressproduces.Thecrackproducesthere
7、asonincludes:1st,designcalculationstage,whenstructurecomputationdoesnotcalculateorpartiallyleakscalculated;Thecomputationmodelisunreasonable;Structurestresssuppositionandactualstressnotsymbol;Theloadlittlecalculatedorleakscalculated;Theendogenicforcewithmatches
8、themusclemiscalculation;Thestructuresafetycoefficientisinsufficient.Whenstructuraldesigndoesnotconsidertheconstructionthepossibility;Thedesigncrosssectionisinsufficient;Thes