考慮樁-土-結(jié)構(gòu)相互作用的大型LNG儲罐有限元動力分析.pdf

1、天津大學(xué)碩士學(xué)位論文考慮樁土結(jié)構(gòu)相互作用的大型LNG儲罐有限元動力分析姓名：張恒申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：謝劍201112WiththeapplicationofLNGthesizeofLNGstoragetankshavebecomebiggerandbiggerAtthisstage，theresearchresultsoftheLNGstoragetankfocusedonthestaticanalysis，con

2、structiontechniques，andSOonComparedtothese，thedynamicanalysisoflargeLNGtanksislessInordertogetamoreaccuratemodel，andhaveourowndesignearlierthisdissertationhasdoneamoreindepthstudyThisdissertationtakestheactualprojectasth

3、ebackground，andtakesFEMprogram“ANSYSversion110”asthemainanalyticalt001ThereliableanalysisresultforthedesignofLNGtankshasbeenobtainedbyconductingthroughresearchtheoreticallyThemainpartsofthisdissertationaredescribesasfoll

4、ows：(1)Thisdissertationdividesthepilesoilfunctionareaintothreeparts：thepurelandarea，thepilesoilareaandtheareafarawayBecausetheinteractionbetweensoilandpileiscomplex，thepile—soilregionissimulatedtoaequivalentcompositemate

5、rialmodel(2)DifferentunitsarechoosefordifferentmodelsWhenthemodelconsideringthepilesoilstructureInteractionissimulated，thetankisregardedasabeamcolumnsystemInthatmodel，thepile—soilmodelisadetailedpart(3)Themodelconsiderin

6、gthepilesoilstructureInteractionandthemodelnotconsideringthepilesoilstructureInteractionarebothsimulatedAnumberofkeypointsareselectedaccordingtodifferentheightsanddifferentanglesUndertheactionofthreeseismicwaves，theseism

7、icrespondsofthetwomodelsarecalculated，andtheresultsarecomparedTheresultshowsthatthe仔equencyincreaseswhenthepilesoil—structureInteractionisconsideredInaddition，themaximumdisplacementandthemaximumstressofthetankdecreases(4

8、)TwoconditionsareconsideredinthisdissertationThisdissertationcomparedtheseismicrespondsofthetwoconditionsunderdifferentseismicwavesInthesameconditiontheseismicrespondsunderCastaicwavearegreatestTherespondsunderartificial

9、wavearesmallest(5)Thisdissertationtakestheactualprojectasthebackground，andUSeSthebranchmodality—twostepanalyticmethodThisdissertationhasmadeamoreaccuratemodel，whichprovidesareferenceforseismicanalysisofothersimilarstruct