Engineering-Research-Activity2016｜SHINSHU UNIV.

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NakayaLabNakayaLabstudiesthevisualizationofgroundwaterflowusingchemicaltracers.Forexample,sulfurhexafluoride(SF6)andchlorofluorocarbons(CFCs)gases,whicharefoundinatmospherebyanthropogenicproduction,inwaterarepotentialdatingtracersofyounggroundwater(~50yr).18Oand2Hinwaterarealsopotentialtracerstodetecttheorigins,thesourceareas,andthepathsofgroundwaterflowofspringandwellwaters.Fromtheageandtheflowpathofgroundwater,wecanunderstandsubsurfaceenvironmentinwatercycle.Bymeasuringchemicaltracersingroundwater,wecanclarifywhenandwherethegroundwaterwasrechargedaswellasitsflowpathandresidencetimefromtherechargezonetoasamplingpoint.Suchhydrologicaldatacanbeusedtopreservetheenvironmentofwatersourceareaandtosetuptherulesforsustainablewateruse.SolvingwaterproblemsinAsiathroughourresearchesisimportantforthefutureearth.Shinji Nakaya, Prof. Major : HydrologyRecently, have developed dating system of ground-water.Field Research : Bangladesh, China, Nagano, Okinawa, Miyagi, Osaka, Hyogo etc.Groundwater sampling in Ryukyu-limestone area, Okinawa Island.Collaboration with Univ. of Ryukyu.Dating & Visualization of Ground Water－using chemical tracers－Arsenic polluted groundwater & soil core sampling in a village along old Brahmaputra river, Sonargagon, Bangladesh. (Collab-work)Thegraduatesfromourlabareinvolvedinthemanagementofsurfacewaterandgroundwaterasresearchers,governors,andconsultantsinlocalandinternationalsocieties.Onegraduatewhowasinvestigatinggroundwaterpollutionisemployedinalawyer’soffice.CivilEngineeringAfter GraduationIn the FutureShimizu LabWhatisabridge?Akindoftheinfrastructureprovidedtocrossariver?OurlaboratoryisdealingwiththewiderangeofBridgeEngineering,inparticularthebuckling/failureofsteelbridgesandbridgeaesthetics.Therecenttargetontheproblemsonbridgefailureisdynamicbehaviourofbridges/viaductcolumnsunderaseismicload.ShigeruShimizuProfessor, Bridge Lab., Department of Civil Engrg.Interesting in Bridge engineering (in particular steel bridges), Bridge aesthetics.A Bridge, as a structure A Bridge, in your mindTheresearchonbridgefailureisdealingwith“howabridgecollapse”underanextremesituationsuchasanearthquake.However,itshallbedifficulttoexaminwithapracticalbridge.Therefore,suchresearchworkiscarriedoutwiththecomputersimulation,togetherwiththeexperimentaltest.Ontheresearchonbridgeaesthetics,the“on-sitesurvey”isanimportantmeans.Alumniofourlabolatryhavetheirprofessionsmainlyinthebridgecompanies,therailwaycompaniesandgeneralcontractors.Somestudentsbecomecivilservantsinthelocalgovernmentsaswell.SomeofalumniinthebridgecompanieshaveconcernedinthedesignandtheconstructionworksoftheworldlargestAkashi-KaikyoBridgeorthefamousTokyoGateBridge.A computer simulation result in which a steel viaduct column fall down under the Niigata Chuetsu Earthquake.The Minato-Ohashi bridge in Osaka, Japan. A questionnaire survey indicates that this bridge is good in its shapes and the color, however harmony on its surroundings is not good due to its squalidity.CivilEngineeringAfter GraduationIn the Future29

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