钢木混合结构多层建筑开发.ppt

ZhengLiPhD,AssistantProfessorDepartmentofStructuralEngineeringTongjiUniversitySeismicPerformanceofTimber-SteelHybridStructuresTheFifthTongji-UBCSymposiumonEarthquakeEngineeringFacingEarthquakeChallengesTogether”

Outline1.Introduction2.Timber-steelhybridstructure3.Experimentalstudy4.Numericalmodeling5.Reliabilityanalysis6.Summary

1.IntroductionEarthquakes!

1.IntroductionChristchurchearthquake,M6.3,NewZealand,2011,PhotobyA.TraffordWenchuanearthquake,M8.0,China,2008Wenchuanearthquake,M8.0,China,2008Kobeearthquake,M6.9,Japan,1995,PhotobyM.Yasumura

MurrayGrove8-storeyCLTstructureinLondon(2008)10-storeyCLTstructureinMelbourne(2012)Timber-concretehybridbuildinginQuebecCity(2010)Examplesofmulti-storeytimberbuildings1.Introduction

2.Formationoftimber-steelhybridstructureWhynothybridization?Hybridizationcanbeanalternativetodevelopmulti-storeytimberbuildings,becauseitnormallycombinestherespectivebenefitsofdifferentmaterials.Inthisproject,akindofmulti-storeytimber-steelhybridstructureisproposed.Timber-steelhybridstructureTimberhybriddiaphragmSteelmomentresistingframeSuitableformulti-storybuildingsGoodseismicperformanceHigherdegreeofindustrializationAdvantagesLightwood-framedshearwallHorizontalsystemVerticalsystem

SteelframeInfillwood-framedshearwallBoltsAnchorboltsHold-downTimber-steelhybridshearwallsystem2.Formationoftimber-steelhybridstructure

SpecimenA:lightwood-frameddiaphragmsingle-sheathedinfillwood-framedshearwallSpecimenB:Timber-steelhybriddiaphragmdouble-sheathedinfillwood-framedshearwallA-1,A-2,A-3andB-1,B-2,B-3aretimber-steelhybridshearwallsystemsinspecimenAandspecimenB.3.1Specimendesign3.ExperimentalstudyLayoutofspecimenAandspecimenB

SpecimenA(lightwood-frameddiaphragmsingle-sheathedinfillwoodshearwall)SpecimenB(timber-steelhybriddiaphragmdou