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低温下LNG储罐混凝土外罐的静力性能分析.docx

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低温下LNG储罐混凝土外罐的静力性能分析 Title:StaticPerformanceAnalysisofConcreteOuterTankofLNGStorageTankatLowTemperatures Abstract: Withtheincreasingdemandforliquefiednaturalgas(LNG)asanalternativeenergysource,thesafetyandreliabilityofLNGstoragetankshavebecomecrucial.OneofthecriticalcomponentsofLNGstoragetanksistheconcreteoutertank,whichprovidesstructuralsupportandinsulationfortheinnerLNGcontainmentsystem.Thispaperfocusesonthestaticperformanceanalysisoftheconcreteoutertankunderlow-temperatureconditions.Theobjectiveistoassessthestructuralintegrityandstabilityoftheconcreteoutertankandensureitsadequacyforlong-termLNGstorage. 1.Introduction: LNGstoragetanksaredesignedandconstructedtostorelargequantitiesofliquefiednaturalgasatextremelylowtemperatures.TheconcreteoutertankactsasaprimarybarriertopreventLNGleakageandprovidesstructuralstabilitytowithstandexternalloads.Thisstudyaimstoanalyzethestaticperformanceoftheconcreteoutertankatlowtemperatures,consideringvariousloadingconditionsandmaterialproperties. 2.LiteratureReview: AcomprehensivereviewofpreviousresearchonLNGstoragetankdesign,includingthebehaviorofconcretestructuresatlowtemperatures,willbediscussedinthissection.Studiesrelatedtothebehaviorofconcretematerialsundercryogenicconditions,suchasthermalexpansion,cracking,anddurability,willbeexamined.Additionally,relevantstudiesonthestaticstabilityofconcretestructures,concretereinforcement,andoptimizationtechniqueswillbereviewed. 3.AnalysisMethodology: Theanalysiswillbeperformedusingfiniteelementanalysis(FEA)software,consideringthenonlinearmaterialbehaviorofconcreteatlowtemperatures.Theconcretewillbemodeledusingappropriatematerialproperties,includingthermalexpansion,elasticmodulus,andstrength.Theloadingconditions,suchashydrostaticpressure,seismicloads,andthermalgradients,willbeappliedtoassessthestructuralstabilityandperformanceoftheconcreteoutertank. 4.ResultsandDiscussions: Theresultsofthestaticperformanceanalysisoftheconcreteoutertankwillbepresentedanddiscussedinthissection.Variousscenarios,