■工学部_研究紹介_2017_英語版ファイル161220

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Shimizu 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.After GraduationIn the FutureWaterEnvironment ＆Civil EngineeringNakayaLabNakayaLabstudiesthevisualizationofgroundwaterflowusingchemicaltracers.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.After GraduationIn the FutureWaterEnvironment ＆Civil Engineering42

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