橋梁順風(fēng)向風(fēng)荷載研究.pdf

1、同濟(jì)大學(xué)碩士學(xué)位論文橋梁順風(fēng)向風(fēng)荷載研究姓名：劉志剛申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：陳艾榮項(xiàng)海帆2001.7.1旦墮查蘭皇墮嬰主堂垡笙奎壘坐!鱉!WindLoadingonBridgesAbstractGroundedOilthebasicconceptsofwi“l(fā)oadingthecmctIlatiOntechniquesofbackgroundrosporisesandrⅨdOllalltrcspOllSeSare

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3、isionintheealelllationmethod8Inadditionthestudi％paymuchattentiontotheparticular州ectofunb81aneodwindloading011doublec∞珊w口brid窖∞sinceonlyveryfew咖di∞havebeenmadeonitinlimraturesTheanalyticalformul∞gi、ertinthethesisafeverysi

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5、ntwind1011dsOnstaticoointlike粕dhorizontallinelikestruetm船a∞studiodineludilagtheiI塔切血t習(xí)∞娜gustwindspeedatapoint，gustwindloadingOnastatiepointlikestructurehased011thelinoarassumption，gustveloeitieswithfiniteaveragingtime，di

6、SCUS$ionsabouttheintlueneesofthequadratictermandthevalidityoftheadoptedwindspectratheaveragedwindloadsoverthelengtlaofstatichorizontallinelikeSIZlIctuIeS，theequivalentwindloadsOnstatichorizontalline1ikeslnlcIl螂involvingj

7、nfluencelineswithconstantsignsandchmgiIIgsignsandunbalancedbael喀rounclwindloading011doublecantileverbridgesTheinfluenceofmeaerodynamicadmittancoofthebridgedeckisintroducodintowindloadscaleulationwhich1110dmesahorizontall

8、ine1ikestructuretoabridgedeckThemostunfavorabledistributionsofthebackgroundequivaleaatwind10adsandthewindloadingwithfiniteaveragi岵lirao81“0alsodiscussedhereinTheauthoralaostudiesi曲lsivdy011oquivalentwitdloadsQndymmaiebri

9、dgesinwhichrellonatltice8DOllSe$aretakenintoc∞siderationincludingtheequivalentwind10adsonadynamicpointlikestrtlcturc，theecluivalont誦ndloadsOnclynamiebridges，tmbalaneo謝IldloadingOndoublecantileverbridge8，thecombinationmct

10、hodoftheme鋤，backgroundandr髂ollgatcomponentsoftheresponsesofwindloading∞dsomediseugsiorlsaboutthebridgeelassifiealionFinallythesimplifiedmethodsforcaleulatingtheequivalentwindloads011longspancablesupportedbridgesaredevclo

11、pedneproportionsofthebaekgrolmdandresonanteomponontsintheequivalentwindloadsdi婦’erenccsfromdistineteqllivalentbasisandtheeontributiomofhighermodesthroughrealbridgedata∞alsostudiedKeywords：Bridges，F(xiàn)luctuatingwi“l(fā)oads，Equi