????Timber Engineering?Strength Property of ?Wood and Wood-based 27Environmental Symbiosis Science DivisionDaizoTSUTSUMIProfessor,Ph.D.Research keywords????Environmental Symbiosis Science DivisionWood Utilization LaboratoryLaboratory for Watershed ConservationHirotoSUESADAAssistantProfessor,Ph.D.TheShinshuregioninparticularhassteepmountains,activevolcanoes,andafragilegeologicalzonealongthemediantectonicline,makingitaregionpronetolandslides.Ourresearchthemesincludeexploringthemechanismsthatcauselandslidestriggeredbyheavyrainorearthquake,snowmeltmudflowscausedbyvolcaniceruptions,andglaciallakeoutburstfloods,anddevelopingmethodstopredictthem.Wearealsomeasuretheamountofspringwaterthatflowsfromthebedrockofthemountainbody,leadingtopredictionsofdeep-seatedlandslides.Furthermore,wearedevelopingamethodtomeasurethesedimenttransportinmountainriversforintegratedsedimentmanagement.Ourresearchfocusesontheutilisationofwoodasastructuralmaterialinbuildings.Aswoodisanaturalmaterial,theperformanceofeachpieceoftimbervariesfromonetimbertoanother.Furthermore,itsmechanicalandotherpropertiesvarygreatlyfromwoodspeciestowoodspecies.Inordertoutilisewoodasastructuralmaterialandtodesignbuildingssafely,weaimtounderstandandclarifythephysicalandmechanicalpropertiesofwood.TimberMaterialsErosion control engineeringLandslide disastersVolcanic eruption disasetersSediment transport monitoringTheutilisationofhardwoodsinwoodjoints,whichhaveahigherdensityandmechanicalperformancethansoftwoods,hasthepotentialtoimprovethestructuralperformanceofwoodjoints.Thefollowingstudiesarethereforebeingcarriedout.ClarifyingthepartialcompressionperformanceperpendiculartothegrainofhardwoodResearchonengineeredtimberhardwoodLandslideprediction by numerical simulation models and field observationsSnowmelt-type volcanic mudflow prediction by onsite physical experiment, numerical simulation modelsSedimenttransportmeasurementinmountainousriversorsedimentbypasstunnelfromdamreservoirsjointsusingExampleofsimulationforpredictinglandslideoccurrence(left:TakedaCity,OitaPrefecture,right:IzuOshima,Tokyo)lakeoutburstfloodinvestigationinNepal(left),elucidationofGlacialsnowmeltmudflowgenerationmechanism(centerandright)Sedimenttransportobservation(left:TanabeCity,WakayamaPrefecture,center:TakayamaCity,GifuPrefecture,right:MatsukawaTown,NaganoPrefecture)Moment resistance test on nuki-column joint using hardwoodThe partial compression testperpendicular to the grain of hardwood
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