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1、ThebridgecrackhasthereasonbriefanalysisAuthor:OrderInrecentyears,ourprovincetransportationinfrastructureobtainedtheswiftandviolentdevelopment,eachplacehasconstmctedthemassiveconcretebridge.Inthebridgeconstructionandtheuseprocess,concernsbecauseofappearsthecrackbuttoaffecttheprojectquality
2、eventoleadthereportcommonoccurencewhichthebridgebreaksdowncollapses.Theconcretedehiscencemaysayis"oftenistakenbadnandnfrequently-occurringdisease11,ispuzzlingthebridgebuildingtechnicalpersonnelfrequently.Actually,ifadoptsthecertaindesignandtheconstructionmeasure,verymanycracksaremayoverco
3、meandcontrol.Inordertofurtherstrengthenstotheconcretebridgecrackunderstanding,avoidsintheprojectappearingtheharmbigcrackasfaraspossible,thisarticlethereasonwhichandproducestotheconcretebridgecracktypemakesthecomprehensiveanalysis,thesummaryasfaraspossible,byfacilitatesthedesign,theconstru
4、ctiondiscoversthecontrolcrackthefeasiblemeans,achievestheguardinnothoweverfunction.Lconcretebridgecracktype,originInfact,theconcretestructuralcracksoriginiscomplexandtherearemanykindsoffactors,eventheyaffectitmutually,buteachcrackhasittohaveonekindoforseveralkindofmainreasons.Theconcreteb
5、ridgecracktype,asthereasonitproduced,maydividethefollowingseveralkindsapproximately:First,theloadcausescrackTheconcretebridgeisstaticintheconvention,movesthecrackwhichundertheloadandthesecondarystressproducestocalltheloadcrack,inducesmainlyhasthedirectstresscrack,thesecondarystresscracktw
6、okinds.Thecrackwhichoutsidethedirectstresscrackisreferstowhichtheloadtocausethedirectstressproduces.Thecrackproducesthereasonincludes:1st,designcalculationstage,whenstructurecomputationdoesnotcalculateorpartiallyleakscalculated;Thecomputationmodelisunreasonable;Structurestresssuppositiona
7、ndactualstressnotsymbol;Theloadlittlecalculatedorleakscalculated;Theendogenicforcewithmatchesthemusclemiscalculation;Thestructuresafetycoefficientisinsufficient.Whenstructuraldesigndoesnotconsidertheconstructionthepossibility;Thedesigncrosssectionisinsufficient;Thes
