扁平鋼箱梁局部構(gòu)造研究.pdf

1、西南交通大學研究生學位論文構(gòu)造研究焦姓級二0O四級名管樂申請學位級別專業(yè)指導教師工學碩士橋梁與隧道工程強士中教授二00七年五月西南交通大學碩士研究生學位論文第|I頁AbstractInthepast20years，withthedevelopmentoflongspanbridge，theflatsteelboxgirderwaswidelyusedThoughtheflatsteelboxgirderhasbeenappliedfor

2、40years，someproblemsofthistype酉rderisstillworthtoresearchInthisthesis，thenorthchannelbridgeofZhujiangHuangpuBridgeistake—nasanumericalexample，Andfour—partsarestudiedinthelocalstructuresystemofflatsteelboxgirderbyFEM：(1)T

3、hedevelopmentandpresentsituationofflatsteelboxgirderisrecounted(2)TheforceofdiaphragminhangingpointanddiaphragminunhungingpointiSanalyzedAnd也eruleofstressiSpresentedTheinfluenceofstiffenersoftopandbottomplateandcableforc

4、eisalsoanalyzedThereasonablepositionofholeindiaphragmisalsopresented(3)ThestabilityofdiaphragminunhungingpointundertheforceofvehicleisanalyzedThestabilityofdiaphragmwithdifferentstiffenersdistributioniscompared，andareaso

5、nableandeconomicalstiffenersdistributionispresented(4)Duringtheconstructionstage，liftingsegment，thetransversedeflectionofsegmenttobeliftingisoppositeofsegmentsupportingcrane，thustheproblemisproducedduringsegmentconnectio

6、nCalculatingaboutthisisdoneinthethesisTheinfluenceofuniformtemperature，non—uniformtemperature，longitudinalplatelocationandlongitudinalplatestiffnessisinvestigatedandsomeoptimizationmeasuresarepresented(5)Theforceoflongit

7、udinalplateofsegmentsupportingcraneunderthehugeforceofcrane，whenthesegmentislifted，iscalculatedinthisthesis，anditisdiscoveredthattheforceoflongitudinalplatehasbeenbeyondthelimition，whenitisdesignedinusualwaySomeoptimizat