大跨徑鐵路斜拉橋動力特性及地震響應研究.pdf

1、西南交通大學碩士學位論文大跨徑鐵路斜拉橋動力特性及地震響應研究姓名：姜夕偉申請學位級別：碩士專業(yè)：結構工程指導教師：蔡婧20100501西南交通大學碩士研究生學位論文第1I頁AbstractWiththedevelopmentoftransportfacilities，largespancablestayedbridgehasbeenwidelyusedinthefieldofrailwaybridgesCablestayedbridg

2、eacrossitssuperiorcapabilitiesandadvantagesofgrowingtheirowngoodtothelong—spandirectionEarthquakeisakindofnaturaldisasterwhichisdifficulttopredictandthedamageisverygreatOccurrenceofthestrongmotionoftenleadstothetremendou

3、slossoflifeandpropertyTheearthquakedisasterofbridgeisespeciallyhugeTherefore，itisofgreattheoreticalandpracticalsignificancetoconductcomprehensiveandsystematicinvestigationontheearthquakeresistanceofbridgeInthisPaper，astu

4、dyoflongspancable—stayedbridge，theestablishmentofspatialfiniteelementmodelofcable—stayedbridge，theapplicationofgeneral—purposefiniteelementanalysisoflargespancablestayedbridgeanditsdynamiccharacteristicsoftheearthquakere

5、sponse，themainresearchcontentsaleasfollows：1Summarizethedevelopmentofthelarge—spanbridgeantiseismictheorytheresponsespectrumforantiseismicanalysisandtime—historymethodarepresentedanddiscussed2Setupfull—spacefiniteelement

6、modelsimulationforoneRiverBridgebyMIDAS，，andthenanalyzeitsfreevibration3Thedynamictime—historyanalysisoftheoneBridgewitlllong—spanhasbeenfinishedTheresponsecharacteristicsunderthedifferentseismicwaveinputareanalyzedindet

7、ailsResultsinthecalculationbasedontheresultsofthebridgeanalysis，todrawpertinentconclusionstosumuptheirPerformanceunderseismicresponse，suchasaftertheconstructionofabridgeforreferencekeywords：cablestayedbridgedynamicproper