土木工程毕业设计外文翻译

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1、英文翻译分　院　理工学院　专业土木工程　　届别2016届2012级学号124173755姓名XXX指导教师严蔚老师2015年12月02日<文献翻译一：原文>StrengthofConcreteinSlabs,InvestigatesalongDirectionofConcretingABSTRACTIntheoryofconcreteitisassumedthatconcretecompositesareisotropiconamacroscale.Forexample,itisassumedthatafloorslab’sorabeam’sstrengthisidenti

2、calinalldirectionsanditsnonhomogeneityisrandom.Henceneithercalculationsoftheload-bearingcapacityofstructuralcomponentsnorthetechniquesofinvestigatingconcreteinstructureinsitutakeintoaccounttoasufficientdegreethefactthattheassumptionaboutconcreteisotropyisoverlyoptimistic.Thepresentresearch

3、showsthatvariationinconcretestrengthalongthedirectionofconcretinghasnotonlyaqualitativeeffect(asiscommonlybelieved),butalsoasignificantquantitativeeffect.Thisindicatesthatconcreteisacompositewhichhasnotbeenfullyunderstoodyet.Thepaperpresentsevaluationsofordinaryconcrete(OC)homogeneityalong

4、componentthicknessalongthedirectionofconcreting.Theultrasonicmethodandmodifiedexponentialheadswithapointcontactwithconcretewereusedintheinvestigations[1-3].Keywords:Concrete;CompressiveStrengthofConcrete;Non-Destructive1.IntroductionInabuildingstructuretherearecomponentswhichareexpectedtoh

5、avespecialpropertiesbutnotnecessarilyinthewholecrosssection.Componentsunderbending,suchasbeamsandfloorslabsaregenerallycompressedintheirupperzoneandtheconcrete’scompressivestrengthisvitalmainlyinthiszone.Thecomponentsareusuallymouldedinthesamepositioninwhichtheylaterremaininservice,i.e.wit

6、htheirupperzoneundercompression.Concreteintheupperzoneisexpectedtobeslightlyweakerthaninthelowerzone,butitisunclearhowmuchweaker[4,5].Alsoflooringslabsinproductionhallsaremostexposedtoabrasionandimpactloadsintheirupperzonewhichisnottheirstrongestpart.Itisknownfrompracticethatindustrialfloo

7、rsbelongtothemostoftendamagedbuildingcomponents.Whenreinforcedconcretebeamsorfloorslabsaretobetestedtheycanbeaccessedonlyfromtheirundersidesandsoonlythebottompartsaretestedandonthisbasisconclusionsaredrawnaboutthestrengthoftheconcreteinthewholecrosssection,inc