Cao XiInJapannotonlypopulationbutalsobridgeshavebeenproceedingrapidlyaging.InNaganoPrefecture,about54%bridgeswillbeorovertheageof50andbeagingbridgesin2022.Themaintenanceandrehabilitationofbridgearebecomingmoreandmoreimportant.InCaoLab,wearedoingresearchesintobridgedeteriorationmechanism,inspectionanddiagnostictechnology,bridgemaintenanceandmanagementtechnologyandsoontoaimatprolongingtheservicelifeofbridge.InCaolab,throughtheresearchforgraduationthesisandbasedontheengineeringknowledge,studentscouldenhancetheirabilityofacademicobservationandtosolveengineeringproblems.Theirspiritofcooperationandinternationalsensewillbedeveloped.Inthefuture,ascapableengineersorresearchersthegraduateswillworkandflourishincivilengineeringandotherfieldsnotonlyinJapanbutalsoovertheworld.Assistant ProfessorGraduated from XibeiPolytechnic Univ.,studied as a visiting scholar at national expenses in Osaka Pref. Univ. etc. Dr. Engineering. Research areas are structural mechanics etc.Study on Bridge Deteriorationto Prolong Bridge Service LifeSomegraduatesworkasnationalorlocalgovernmentofficialsincivilandconstructionfield.Someofthemareworkersforconsultantcompany.SomegraduatesworkforJapanRailwayscorp.,nuclearpowerplants,etc.Afewstudentshavechosentobecomewesternfoodrestaurantcooks.SomestudentsfromCaoLabareinspectingandinvestigatingaconcretebridgeinservice.During the post-war high economic growth period in Japan, many bridges were built. Nowtheyhave been proceeding rapidly aging.30% 13% 10% 9%9% 3% 1%4% 6% 1% 12%2% 56%44% ,,1955～19591960年代1970～19721920年以前1920年代1930年代1940年代1950～19541972～19791980年代1990年代2000年代不明After GraduationIn the FutureWaterEnvironment & Civil EngineeringHow to Recovery Damaged Bridge After Natural Disaster ?Yuki ChikahiroWehaveexperiencedmanytimesaphenomenoninwhichabridgeisdamagedand/orwashedawayduetoatyphoon,heavyrainintherainyseason,localizedtorrentialrain,tsunami,andotherflooddisasters.Thereisaccordinglyincreasingdemandfornewtechnologyandsciencetorestorebridges.Now,ourlaboratorydealswiththedisasterpreventiontechnologyofthebridges.Currentresearchobjectsare1)Newtypeoftemporaryand/oremergencybridgeand2)Seismicperformanceofthebridgestructure.Withoutthebridgeafterdisaster,whatishappen?Disconnectedroadsmustdisturbtherestorationandrescueactivity.Aboveresearchtopicswillbefoundmoresafetydesignofthebridgestructureswhichareinvaluablesysteminourdailylife.Ourcontributionmakesclearthefundamentalmechanismbytheexperimentalandnumericalworking,andthenwewouldliketofeedbackourresultsassocialcontribution.Assistant ProfessorAfter graduated from Hiroshima University in 2016, started to work at Shinshu University. Current research fields are Bridge Eng. and Structural Eng..Manyofgraduatesworkinwiderangeofengineeringfieldssuchaspublicofficerandpubliccompany.Recentplacesofemploymentareconsultantcompanyandconstrictioncompany.In the FutureAfter GraduationFlow out of bridge’s girder by heavy rainProposal of new type of emergency bridge using scissors mechanismConcept of rapid constractableemergency bridge called MobileBridgeTMWaterEnvironment & Civil Engineering44
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