土建专业外文翻译5

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1、外文翻译[9]QianWang，S.M.ASCE，JasbirS.Arora.AlternativeFormulationsforStructuralOptimization:AnEvaluationUsingFrames.JournalofStructuralEngineering2006vol.132no.12p.1880-1889Thispaperdiscussesthisisachangeintheaxialloadandlateraldisplacementfunction,weretestedinfourbending

2、steelnodecyclicbehavior.Beamspecimenbyvariablecrosssectionbeam,flangeandlongitudinalstiffeningribs.ThetestsampleisloadedbyaxialloadandlateraldisplacementisusedtosimulatelateralloadcarryingcompositebeamonKangwansystemeffects.Theexperimentalresultsshowthatthespecimenint

3、herotatingangleofmorethan0.03radianafterfromplasticitytoductilitychanges.LongitudinalstiffenerexisttohelptransfertheaxialloadloadanddelayedtheformationofWeblocalbuckling.Inordertoevaluatethevariablecrosssectionbeam(RBS)nodeunderaxialloadandlateraldisplacementofthelowe

4、rstructureperformance,onfourfullsizespecimensweretested.ThesetestplanevaluationfortheSanFranciscoexhibitioncenterexpansiondesignofflexuralnodestomeetthebasicseismicdesigngrade(DBE)andmaximumpossibleearthquakegrade(MCE)undertheperformance.BasedontheaboveanddoontheRBSfl

5、exuralnodesofthestudypointedoutthattheformofRBSnodescanobtainmorethan0.03radianangleofrotation.However,somepeopleforthesenodesintheaxialandlateralloadsofseismicperformancequalityraisedthesuspicionof.SanFranciscoExhibitionCentreExtensionProjectisa3layerstructure,andste

6、elbendingframeasthebaseofthelateralforceresistingsystem.这篇论文讨论的是在变化的轴向荷载和侧向位移的作用下，接受测试的四种受弯钢结点的周期性行为。梁的试样由变截面梁，翼缘以及纵向的加劲肋组成。受测试样加载轴向荷载和侧向位移用以模拟侧向荷载对组合梁抗弯系统的影响。实验结果表明试样在旋转角度超过0.03弧度后经历了从塑性到延性的变化。纵向加劲肋的存在帮助传递轴向荷载以及延缓腹板的局部弯曲。为了评价变截面梁（RBS）结点在轴向荷载和侧向位移下的结构性能，对四个全尺寸的样品进行了测试

7、。这些测试打算评价为旧金山展览中心扩建设计的受弯结点在满足设计基本地震等级（DBE）和最大可能地震等级（MCE）下的性能。基于上述而做的对RBS受弯结点的研究指出RBS形式的结点能够获得超过0.03弧度的旋转角度。然而，有人对于这些结点在轴向和侧向荷载作用下的抗震性能质量提出了怀疑。旧金山展览中心扩建工程是一个3层构造，并以钢受弯框架作为基本的侧向力抵抗系。[10]ZhuJiang.Trytotalkaboutthebuildingstructuredesignprincipleandmethods.FortureWorld.20

8、09(22).Concreteiscomposedofcement,water,fineaggregate,coarseaggregate(gravelandpebbles;),air,andoftenotheradmixturesafterhar