渡槽結(jié)構(gòu)背景風(fēng)荷載響應(yīng)研究.pdf

1、同濟大學(xué)土木工程學(xué)院碩士學(xué)位論文渡槽結(jié)構(gòu)背景風(fēng)荷載響應(yīng)研究姓名：羅麗榮申請學(xué)位級別：碩士專業(yè)：防災(zāi)減災(zāi)工程及防護工程指導(dǎo)教師：李遇春20080101AbstractAbstractOnbasisofexistingresearchesonhighrisebuildingsandbridges，thispaperusesthemethodofLRC、GLF(withandwithoutwindvelocityspatialcorrelat

2、ion)andQML，toanalyzethebackgroundequivalent、析ndloaddistributionandbackgroundresponsefortheaqueductbridgesAccordingtopracticalengineeringexamples，thispapercomputedthebackgroundequivalentwindloaddistributionandbackgroundre

3、sponsesofthedouble—cantileverandarchaqueductstructuresTheanalyticalresultsindicateasfollows：1)Itobtainslowerbackgroundresponseandbackgroundequivalent塒ndloaddistributionbyusingDavenport’SpowerspectrumthanbyusingKaimal’Spo

4、werspectrumThispapersuggestsapplyingKaimal’sspectruminthewindresistancecalculationofaqueductbridges，theresultswillbemoresafety2)TheLRCmethodgetslowerbackgroundresponseandbackgroundequivalent晰ndloaddistributionthanthatofG

5、LF(notconsidering晰ndvelocity’Sspatialcorrelation)methodwhenthesamewindpowerspectrumisusedTheGLFmethod(Codemethod)givesthemoreconservativeresults3)TheGLFmethod(with謝ndvelocityspatialcorrelation)getslowerbackgroundresponse

6、valuethanthatofLRCmethodSotheGLFmethod(withwindvelocityspatialcorrelation)maytendtounsafety4)Thebackgroundresponsedecreaseswiththeheightincreasingforthesameaqueductbridge5)Thepeal【factorgn=35obtainsgreaterbackgroundwindr