After GraduationShigeru KoyamaEveninthefieldofcivilengineering,newmaterialssuchasfiberreinforcedplastic(FRP)andfiberreinforcedconcrete(FRC)areincreasinglyusedtoconstructstructures.Mechanicalcharacteristicsofthesematerialsarenotclearlyunderstood,whentheyareusedforlargestructures.ThereisonlyonebridgeinJapanthatallstructuralmembersaremadewithFRP.Inourlaboratory,werunnumericalsimulationstopredictmechanicalbehaviorsofsuchmaterialsandstructures.Usingthesematerials,weexpecttobeabletodesigncivilstructureswithahighdegree-of-freedomduetotheirsuperiorpropertiessuchaslightweight,flowability,andcorrosionresistance.Furthermore,itwillbepossibletominimizestrainsontheenvironmentinmanufacturingthemifwecanestimatetheoverallmechanicalpropertieswithsomedegreeofaccuracy.AssociateProfessorCurrent Subject: analysis on overall properties of composite materials and multi-agent simulations in civil engineering field.Deformation and stress distribution of hybrid FRP composite I-beam(finite element analysis).Analysis on New Materialsin Civil EngineeringPredictions of average stress-strain relations of SiCw-reinforced 5456Al by our method.Ourgraduatesareworkingaspublicemployees(MLIT,ShizuokaPref.,AichiPref.,OkinawaPref.,ShigaPref.,NakanoCity)andinEastJapanRailwayCompany,NipponCable,TokyuConstruction,andYahagiConstruction,KandoCo.,LTD.In the FutureWaterEnvironment & Civil EngineeringNoriakiSogawa100 year excess probabilistic rainfall of daily rainfall maximum, increasing tendency(Niigata).10 year non-excess probabilistic rainfall of annual rainfall, decreasing tendency (Niigata).Sogawalaboratorystudiesthenon-stationaryrainfallfrequencyanalysisforfloodcontrolandwaterutilizationplan.Thefloodcontrolplanistopreventandcontrolfloods.Thewaterutilizationplanistopreventandcontroldroughts.Theprobabilityforrainfallhasbeencomputedbystationaryfrequencyanalysis.However,itwasrecentlyprovedthattherainfalltimeseriesisnon-stationary.Therefore,thenon-stationaryrainfallfrequencyanalysisisrequired.Sogawalaboratoryhasbeenworkingonthisproblemformanyyears.Wewillinvestigatethenon-stationaryrainfallfrequencyanalysisbyusingGCMdataforfloodanddrought.Thenon-stationaryrainfallfrequencyanalysisprovidestheindicestopreventfuturefloodsanddroughts.Theindexfloodindicatesanincreaseinfloodsandtheindexdroughtindicatesadecreaseindroughts.Wearethefirstteamintheworldtousetheseindicesforfloodcontrolandwaterutilization.Wecompletedthestudiesandarewaitingtohearfromadministrationfordirections.ThegraduatesofSogawalaboratoryarepublicofficialsandconsultingtechnicians,andtheyareveryactive.AssociateProfessorResearch associate in faculty of eng.Shinshuuniv., present office from 1991. Research field : Hydrology and water resources eng.. Specialty: Hydrologic statistics Non-stationary Frequency Analysis for Flood Control and Water Utilization PlanAfter GraduationIn the FutureWaterEnvironment & Civil Engineering40
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