毕业论文外文参考资料及译文

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1、毕业设计（论文）外文参考资料及译文译文题目：　　　　　学生姓名：学　　号：专　　业：所在学院：指导教师：职　　称：年月日FundamentalsofCompositeActionandShearConnectionTheevolutionofsatisfactorydesignmethodsforcompositebeamshasbeenaslowprocess,requiringmuchtheoreticalandexperimentalworkinorder'toprovideeconomi

2、cand,atthesametime,safedesigncriteria.ThepurposeofthisChapteristodescribeinsomedetailthemoreimportantfundamentalswhichhavetobetakenintoaccountinthedesignofcompositestructures.Historicallythefirstanalysisofacompositesectionwasbasedontheconventionalass

3、umptionsoftheelastictheorywhichlimitthestressesinthecomponent'materialstoacertainproportionoftheir'failurestresses(yieldinthecaseofsteel,crushinginthecaseofconcrete).Theassumptionsinherentintheelasticmethodaresimilartothoseforordinaryreinforcedconcre

4、te.Inrecent'yearstheconceptsoftheultimateloaddesignphilosophyhavebeenappliedtocompositeactionandabodyofexperimentalevidencehasshownittobeasafe,economicalbasisonwhichtoproportioncompositesections.Althoughatthepresenttimeultimateloaddesignmethodsaredir

5、ectlyapplicableonlytobuildingsandnottobridgesthereseemsnoreasontodoubtthatintimetherestrictionwilldisappear.Beforedealingindetailwiththetwodesignapproaches(elasticandultimateload)basicpointsrequireconsideration.Aclearunderstandingofthewayinwhichtheco

6、mponentmaterials,steelconcreteandshearconnectionreacttoappliedloadisanessentialpreliminarytofullanalysisofthecompositesection.Ofprimaryimportancearethestressstrainsrelationships,whichmustofnecessitybetheproductofcarefullycontrolledexperiment.Theseexp

7、erimentalresultsarenotgenerallysuitedtodirectapplicationandsosimplificationsandidealisationsareadoptedinpractice.Theuseofcomputershasmadeitpossibletoreducetheamountofidealisationrequiredwiththeresultthatcomputer`experiments'cannowbeperformedusingmate

8、rialstress-strainrelationshipsofconsiderablecomplexity.Compositeactionbetweensteelandconcreteimpliessomeinterconnectionbetweenthetwomaterialswhichwilltransfershearbetweenthem.Inreinforcedconcretemembersthenaturalbondofconcretetosteelisoftensufficient