促进东京地下空间利用-以公私合作为视角

1、The promotion of underground space utilization in Tokyo through public-private partnershipHideo NAKAMURA,Dr.Eng.Professor,Civil Engineering Dept.College of Science and TechnologyNIHON Universitynakamaura.hideo74nihon-u.ac.jpTopicsRecent Underground Infrastructure Projects in Tokyo River(retention facilities and discharge channels)Road(highway ring road)Subway(station)Underground Space Improvement with Public-Private PartnershipProblems of InfrastructureDevelopment in TokyoInfrastructures in Toky

2、o are highly developed,which provide functional/comfortable/secure condition to people.Some fundamental infrastructures are unfinished.Necessary to reconstruction because of aging,lack of function.Difficult to obtain space to install in densely urban area.Utilization of underground space becomes indispensable.River ProjectsMetropolitan Area Outer Underground Discharge ChannelSource:http:/www.ktr.milt.go.jp/edogawa/edogawa_index045.htmlTokyoOuter Underground Discharge ChannelMetropolitan Area Out

3、er Underground Discharge ChannelSource:http:/www.ktr.milt.go.jp/edogawa/edogawa_index045.htmlOverall Conceptual ViewPump Station6.3 km length5 BanksEdogawa RiverNakagawa RiverOootoshifututone RiverSource:http:/www.ktr.milt.go.jp/edogawa/edogawa_index045.htmlMetropolitan Area Outer Underground Discharge ChannelOverall Configuration Diagram6.3 km lengthSource:http:/www.ktr.milt.go.jp/edogawa/edogawa_index045.htmlMetropolitan Area Outer Underground Discharge ChannelSpecification of BanksSource:http

4、:/www.ktr.milt.go.jp/edogawa/edogawa_index045.htmlMetropolitan Area Outer Underground Discharge ChannelSource:https:/ Area Outer Underground Discharge ChannelNormal ConditionAfter typhoon 19thWater Flows into pressure-adjusting Water TankUnderground Reservoir is under construction(West part of Tokyo)Under ConstructionCompletedAreaUnderground Reservoir is under construction(West part of Tokyo)Ring Road No.73443 mOuter Diameter:13.2 13.7 mInner Diameter:12.5 mLength:4.5 kmCapacity:540,000 tons90%w

5、as filledin Typhoon 19thSource:http:/www.kensetsu.metro.tokyo.jp/content/000029010.pdfModified by Hideo NAKAMURASHIBUYA Renewal ProjectSource:http:/www.tokyu.co.jpSHIBUYA Renewal ProjectShibuya River(culvert)Underground Plaza East AreaSource:http:/re-shibuya.jp/page/future/Modified by Hideo NAKAMURASHIBUYA Renewal ProjectReservoir4,000 m3Underground PlazaEast AreaShibuya River(culvert)Source:http:/mirai- by Hideo NAKAMURASHIBUYA Renewal Project(Undergroud Zone)Underground PlazaEast AreaReservoir

6、Shibuya River(culvert)Source:http:/re-shibuya.jp/page/future/Modified by Hideo NAKAMURASummary Rainfalls become stronger,occur very frequently.Difficult to expand the capacity of river flow in urbanized area,lower reaches of rivers.One of the effective measures is to install huge retention facilities using underground space.They played important role in the case of Typhoon 19th.Road ProjectsSource:http:/www.shutoko.jpCentral Ring Road Shinagawa Line(Yamate Tunnel)Central Ring Road Shinagawa Line

7、(Yamate Tunnel)Source:http:/www.shutoko.jpLength:9.4 kmTotal Length:18.2 kmCentral Ring Road Shinagawa Line(Yamate Tunnel)Source:http:/www.shutoko.jpCentral Ring Road Shinagawa Line(Yamate Tunnel)Source:http:/www.shutoko.jpOuter Ring Road is Under ConstructionSource:http:/www.milt.go.jpLength:16.2 kmOuter Ring Road is Under ConstructionSource:http:/www.milt.go.jpFormer PlanCurrent Plan(1966)(2007)Inner Ring Road planned to be moved undergroundSource:http:/www.mlit.go.jpInner Ring Road planned to

8、 be moved undergroundSource:http:/www.mlit.go.jpLength:1.2 kmInner Ring Road planned to be moved undergroundSource:http:/www.mlit.go.jpInner Ring Road planned to be moved undergroundCurrent situation of NIHON-BASHISource:http:/www.mlit.go.jpInner Ring Road planned to be moved undergroundFuture image of NIHON-BASHISource:http:/www.mlit.go.jpInner Ring Road planned to be moved undergroundEstimated Cost3,000(million dollars)(million dollars)370370370940940Appropriation From Large Scale Renewal Cost

9、 in the Future(Road Company)Investment(National/Local Gov.)Related Public Works(Local Gov.)Reduction of the Cost(Road Company)Contribution from DevelopmentAlongside the RoadSource:http:/www.mlit.go.jpModified by Hideo NAKAMURASummary Many problems to construct highways in urbanized area such as environmental issues(air pollution,noise pollution),difficulty of acquisition of land.Utilization of underground space provides solution to the problems.Technological advances bring possibility to get ove

10、r difficulties on underground construction.People can enjoy comfortable life on the surface.Subway(Station Renewal)ProjectsPlatformConcourseCongestion mitigationFurther improvement of safety measuresEntrance/ExitBarrier-free facilities(elevators/escalators)Safety measures(flood,etc.)RestroomReplacement with western-style toiletIntroduction of multifunction toiletBarrier-free facilitiesFacilities for station workersFacilities for female workersImprovement of work environmentShopsService Facilitie

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