高烈度山區(qū)連續(xù)剛構-簡支梁體系橋地震反應分析.pdf

1、西南交通大學碩士學位論文高烈度山區(qū)連續(xù)剛構簡支梁體系橋地震反應分析姓名：彭剛輝申請學位級別：碩士專業(yè)：防災減災工程與防護工程指導教師：鄭史雄20091201西南交通大學碩士研究生學位論文第ll頁AbstractChinaiSlocatedbetweenthetwoofthemostactiveseismicbeltsintheworldandthushasintensiveseismicactivityThehighintensitym

2、ountainusuallycancausestrongIevelearthquakebecauseofitscomplicated，hi曲stress，intensecrustalmovementgeologicalstructure512WenchuanEarthquakehadamagnitudeoflarge，hi曲intensity，affectingawiderangeofareaSOthatbridgeslocatedin

3、thisareahadbeenseverelydamagedresultingintr鋤Cblockedandgreatlossesofpeople’SpropertyTherefore，itisnecessarytomakeanindepthstudyandanalysistotheseismicperformanceofhighintensitymountainbridges，whichhasanimportantimpactfor

4、safetyThispaperanalyzesahi曲一intensitymountainbridge—longspancontinuousrigidframeandsimplysupportedbeambridgeasfollows：1Useaprogram，complyingtotherelevantnorms，tosynthesizeseismicwavesAnalysisonthesegeneratedwavesindicate

5、sagreatsimilarityamongthethreewavesaswellasthespectralcompositionEnterthesynthesisofseismicwavesandusebothlinearandnonlineartimehistoryanalysismethodstoanalyzeseismicresponsetothetargetbridge。inwhichanalyzethefullbridge，

6、themainbridgeandtheapproachbridgemodelswiththelineartimehistoryanalysiswhiletheeffectsofcollisionbetweenthemainbeamandblockandseismicisolationofbridgewitllnonlineartime—historyanalysis2Becauseofthedifferenceofthestiffnes

7、sbetweenlongspancontinuousrigidframebridgeandsimplysupportedbeambridge，theseismicresponseofthestructureisverycomplexMoreover，combinationoftwokindsofbridgetyperesultsinacompletelydifferentfromthatofasinglebridge—typerespo

8、nseduringearthquakeHence，itisnecessarytostudythelong—spancontinuousrigidframebridgeandthemultispansimplysupportedbeambridgeunderseismiccouplingeffectThemostpiersofthetargetbridgearehi曲一pierandtIleyaresubmergedinwaterther

9、eforeitneedsconsideringthehyarod37namiceffectsofthestructure，atthesametime，consideringtheinteractionbetweenpileandsoiltotheeffectsofthestructure3Thepeakgroundaccelerationofhighintensitymountaininseismicactionislargethust

10、heearthquakeeffectsonstructuresarequitestrongwhetllerinlongitudinalbridgeorinthecross。bridgewhichhavecausedsomeofthebridge’Smainbeamsinthecross—bridgefallingdownT11iSisbecausethattllemainbeamandblockcollidesintheearthqua