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《大跨度連續(xù)鋼桁梁拱橋極限承載力研究與非線(xiàn)性因素影響分析》由會(huì)員上傳分享，免費(fèi)在線(xiàn)閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、西南交通大學(xué)碩士學(xué)位論文大跨度連續(xù)鋼桁梁拱橋極限承載力研究與非線(xiàn)性因素影響分析姓名：方緒鐲申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：橋梁與隧道工程指導(dǎo)教師：鄭史雄20090301西南交通大學(xué)碩士研究生學(xué)位論文AbstractTmSthesismainlystudieStheultimatebearingcapacityandanalysestheinfluenceofnon．1inearfactorsonlong-spansteeltrussedarchbridges．MainlYworkisdoneasfollow：．1．Thetheoreticalknowledgewh
2、ichanalyzingtheproblemneedsforisintroducedcomprehensively．Ineludingthetheoryaboutstabilityofthestructure．thetheoryaboutcalculationthenon．1inearfactorsofmaterialsandgeometrywhichcanbeusedincalculatingthelong—spanbridges，thetheoryaboutresearchmethodsofstudyingtheultimatebeatingcapac
3、ityofbridgesandSOon．2．nebackgroundforengineeringstudyingisNanjingDashengguanBridge．Fimte．elementsoftwareANSYSisusedforanalyzingthebridge．Firstly，theultimatebearingcapacityoftheNanjingDashengguanBridgeisascertainedinbelowthreecircumstances：linearelastic，consideringthegeometricnon·l
4、inearonly，consideringthegeometryandmaterialsdualnon-linear．Thenmakeadetailedcomparisonofthreecases，drawntheultimatebearingcapacityofsteeltrussedarchbridgebesubjectedtonon—linearfactors．Secondly，theultimatebeatingcapacityoftheNanjingDashengguanBridgeisalsoascertainedinthecasesofdif
5、ferentwindspeedWhichasdifferenthorizontalwindloadsactonbridge．Makingadetailedcomparisonofdifferentcasestoo．concludinginfluenceofhorizontalwindloadsontheultimatebearingcapacityofthebridgestructure．SotherightultimatebearingcapacityofthebridgestructureCanbeobtain，itprovidesascientifi
6、cbasisforlimited．designing．Thestructure’sformofdamageCallbeknowclearly,alSOthestructure’SsecurityreserveunderthecertainloadorthecapacityofoverloadalSOCanbeknowaccurately．A11theseCanprovideabasisandprotectioninconstruction,operation，safetymanagementofthebridgestructure．3．髓egenerall
7、oadandultimateloadactingonthebridgeareanalyzed．thentheintemalforcesanddeformationinsuchtWOcasesarecompared．Sotheinfluenceofthenon．1inearfactorsonsteeltrussedarchbridgecanbeconcluded，itcanbeusedintheprocessofdesigning．Keywords：long—spansteeltrussedarchbridges；ultimatebearingcapacit
8、y；non—linearfactor；horizontalwind
