外文翻译--破损钢板在热矫直过程中的原理.doc

HEATSTRAIGHTENINGDAMAGEDSTEELPLATEELEMENTSByR.RichardAvent,1DavidJ.Mukai,2PaulF.Robinson,3andRandyJ.Boudreaux4ABSTRACT:Thefundamentalelementofanystructuralsteelshapeistheflatplate.Damagetobridgestructuresconsistsoftheseplateelements,incombination,bentabouttheirstrongand/orweakaxes.Thepurposeofthispaperistodescribeexperimentalandanalyticalresearchonheatstraighteningasappliedtoplatesandtopresentrelatedengineeringcriteriaforitsuse.Anexperimentalprogramwasconductedtoevaluatetheresponseofplatestoheatstraighteningandtoidentifyimportantparametersinfluencingbehavior.Over300heatswereappliedtoavarietyofplates.Theprimaryfactorsinfluencingstraighteningweretheangleoftheveeheat,steeltemperatureduringheating,andexternalrestrainingforces.Theplasticrotationafterheatingwasdirectlyproportionaltotheseparameters.Toaidengineersinpredictingplatemovementsduringheatstraightening,asimplemathematicalformulawasdeveloped.Thisequationrelatestheaverageplasticrotationperveeheattoveeangle,steeltemperature,magnitudeofr