鋼管混凝土拱橋吊桿更換優(yōu)化設(shè)計(jì).pdf

1、華中科技大學(xué)碩士學(xué)位論文鋼管混凝土拱橋吊桿更換優(yōu)化設(shè)計(jì)姓名：印濤申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：高榮雄20110224IIAbstractIntherecenttwentyyearstheconcretefilledsteeltubulurarchbridgehasbeendevelopingrapidlyinourcountrytheapplicationoftheconcretefilledsteeltubulura

2、rchbridgehasreachedadvancedlevelsinthewld.Howeverwiththeincreaseoftheoperatingtimeotherresonssuchasfatiguecrosiontherearemanysuspendersthathavebeendamagedinrecentyears.Hencememeconcretefilledsteeltubulurarchbridgesarefac

3、ingtheproblemsofsuspenderreplacement.Therefeit’snecessarytofurthertheresearchontheoptimaldesignofthesuspenderreplacement.Basedontheactualbridgeprojectthefiniteelementsoftwareisappliedinthispapertoanalyzethestresssystemof

4、thesuspendersconducttheoptimaldesignofthesuspenderreplacementintheconcretefilledsteeltubulurarchbridge.Themaincontentsofthispaperareasfollows:1、Analyzethestresssystemofthesuependersunderthedeadloadtheliveloadindertogetth

5、elawoftheinternalfceofthesuspenderstheproptionofinfluencethatcomesfromtheloadupontheinternalfce.2、Conducttheoptimaldesignofthesuspenderreplacementintheconcretefilledsteeltubulurarchbridgeincludingtheoptimaldesignofthetar

6、getfcesthetensionfcesinthesuspenders.Makeacomparisonbetweentheoptimizationresultsofthezerodisplacementtheleastbendingenergymethod.Inthemeantimecomparetheoptimizationresultsoftheinfluentmatrixthefwardanalysisiterativemeth

7、odsoastodrawthegeneralconclusionsoftheoptimaldesignofthesuspenderreplacement.3、Analyzethefinisheddeadloadstateinthepostoptimalitytheunoptimizedcase.Thuscomparetheinternalfceofthestructureofthebridgeevaluatetheoptimizatio

8、neffect.4、Theanalysisofthefinishedoperationstateinthepostoptimalitycaseofwhichtheresultsshowthatit’seffectivetousetheleastbendingenergymethodthefwardanalysisiterativemethodtoconducttheoptimaldesignofthesuspenderreplaceme