大跨斜拉橋結(jié)構(gòu)風(fēng)荷載研究.pdf

1、同濟(jì)大學(xué)碩士學(xué)位論文大跨斜拉橋結(jié)構(gòu)風(fēng)荷載研究姓名：張福江申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：橋梁抗震與抗風(fēng)指導(dǎo)教師：陳艾榮項(xiàng)海帆20000401摘要大跨斜拉橋結(jié)構(gòu)風(fēng)荷載研究ABSTRACTThispaperdealsmainlywithwindloadsofcablestayedbridgesandfocusesonhowtocalculatethebuffetinginertialloadsofcablestayedbridgesduringth

2、elongestdoublecantileverconstructionstageandaftercompletionThestaticaerod)’namicforcecoefficientsoftypicalbridgesectionsarealsomeasuredthroughwindtunneltestsBycomparisonofbridgewind—loadspecificationsamongseveralcountrie

3、s，theauthoranalyzedthedeficiencyofthepresentChinesespecificationAthoroughexplanationismadehereonthenormalwindinatmosphericboundarylayerincludingitsturbulencemechanismthestatisticscharactertheinfluencefactorofwindvelocity

4、thebuffetingphenomenonandtheexistedmethodonbuffetinganalysisThenbasedonspectrumanalysismethod，thebuffetingresponseofcablestayedbridgesduringthelongestdoublecantileverconstructionstageisproposedbytakingthereasonablehypoth

5、esisaboutvibrationmodeandcurveimitationduringintegralprocedure，Inaccordancewiththedisplacement—equalprinciplethesideequivalentwindloadsduringthecomplementstagearegiveninsimpleformSomeimportantparameterssuchasthegustwindr

6、esponsecoefficientsandbackgroundresponseratioarealsoanalyzedIntheend，Someformulas曲outstaticwindlondsarepresentedandacarefuldiscussonthestaticaerodynamicforcecoefficientsarealsomadethroughthestudyonseveraldomesticlongspan

7、bridgesBasedonthedomesticandabroadbridgese嘶ondatathestaticaerodynamicforcecoefficientsofthirteentypicalsectionsaremeasuredthroughwindtunneltestsandsomevaluableconclusionsaremadebythetestingresultsKeDvords：Cablestayedbrid