韩国釜山沉管隧道.ppt

Busan-Geoje Fixed Link Project,2009.06.,Immersed Tunnel Segment,Precasting for,Geoje-do,Kadeok-do,-CONTENT-,.Project Overview,.Location,.Facts and figures,.Element Production,.Warping,Towing and Mooring,.Immersion Works,.General background items,Busan-Geoje Fixed Link Project,2 Roadway lanes in each direction :,L=8.2Km,B=20.5m,Immersed tunnel :3.7km,2 x Cable stayed bridge :1.6km,4 x Approach bridges :1.9km,2 x Bored tunnels :1.0km,2004.12.10 2010.12.09,(Construction:,6years,Concession:40years),Start point,:Yuhori,Jangmockmyun,Kyungnam,G,eojesi,GK,Fixed Link Corporation,Yooshin Engineering Corporation,Project name,Key data,Location,Concessionaire,Construction Period,Contractor,Supervisor,COWI in JV with 5 Korean consultants,Designer,Project cost,End point,:Chunsungdong,Gaduckdo,K,angseogu,Busansi,Total project cost :$1.4Bil.,(based on December 1999 prices),Government subsidy,:$0.4Bil.,Private investment,:$1Bil.,.Project Overview,:44.6%,:21.3%,:13.6%,:8.0%,:5.7%,:5.3%,:1.5%,DAEWOO E&C,DAELIM,DOOSAN Industrial Development,SK Engineering&Construction,KDC,HANIL,WONHA Construction,Kosung,Tongyeongi,Geoje,Sinhyun,Masan,Changwon,Jinhae,Busan,Daejeon-Tongyeong Highway,Anjeong Yard,(Immersed Tunnel Elements&Bridge Substructure),Obi Yard,(Bridge Superstructure),Immersed tunnel and,Cable stayed bridges,Geoje Island,Overall Project L=8.2km,Cable Stayed Bridges&bored tunnels,L=4.5km,Immersed Tunnel,L=3.7km,.Location,Temporary Mooring Area,(37Km from Gaduk),Gaduk Island,Naval base,Project section,Birds eye view,Three Pylon cable stayed bridge,Two Pylon cable stayed bridge,Immersed Tunnel(3.7KM),Main span,:230M/,Navigation clearance:36M/Pylon Height,:102M,Main span,:475M/,Navigation clearance:52M/Pylon Height,:156M,Geoje Island,Gaduk Island,.Facts and Figures(Segments/Elements),Quantity:18 No.(3.24km),Length,:180m(8x22.5m segments),Weight :approximately 54,000t,Width,:26.46m,Length:22.50m,Height,:9.97m,Rebar:430t/seg.(E1,2)&330t/seg(E3,4),Concrete :2,264,/segment,Strand :132 t/element,Steel cast-in items,:1,100 t/element,S1,S2,S3,S4,S5,S6,S7,S8,22.5M,180M,26.46m,Element,Shear Key,Shear Key,Typical Cross section,Ballast Concrete,Ballast Concrete,Shear Key,PRIMARY END,SECONDARY END,Elevation,9.97m,t=0.58m,t=1.35m,t=1.33m,t=1.33m,Area of Yard,(329m 870m),Site office,Dock Gate,(Floating),Dry Dock,Mooring,Area,Location,:Anjeong National Industrial Kyungnam Tongyeong,Key data:Overall area approx.250,000 m Dry dock volume 100,000 m,Item,Dry Dock,Element production,Area for bridge substructure,Bridge Caisson construction,T.T.P construction,Bridge Pier construction,Size,L=474m,W=145m(EL=-11.15),W=26.46 28.46m,H=9.97m,L=180m,L=268 m,W=50 m,Quantity,1,18,1,H=1034 m(1,1409,800ton),23,4 ton 72 ton,8,600,H=1437 m(1,2603,500ton),22,Comment,Max,.,5 elements at one time,8 complete,5 70%complete,Completed,Artificial island now completed,Substantially completed,Mooring area,L=556m,W=217m,1,Max.6 elements at one time,Overview,.Anjeong Pre-Casting Yard,Overview,Location,:Obi Industrial complexes,Kyungnam,Area,:Approx.,130,000 m,Item,Superstructure work area,Approach bridge spans,Pre-cast deck panels for,cable-stayed bridges,Size,L=250m,W=100m,Total:140000M,1Spans lengths from 49 90 m,W=10.35 12.35 m,L=4 m,Quantity,1,30,702,Comments,8 spans placed,Starts soon,Element protection works,Core-Loc 12Ton,Accropode 25,35,50 Ton,5,473,Substantially completed,.Obi Pre-Casting yard,Item,Caisson,Pier,Design,11,11,Completed,11,4,Being built,1,5,Not started,-,2,Item,Caisson,Pier,Design,12,11,Completed,12EA,Being built,1,3,Not started,-,8,.Cable stayed bridge,2 Pylon Bridge,3 Pylon Bridge,Western Portal(Jungjuk island),Eastern Portal(Gaduk island),1.Dredging and foundations,2.Immersing and backfilling,3.Internal works in the elements,4.Cut&Cover tunnel construction,-East,:170m,-West,:170m,.Immersed Tunnel,.Element Production,Set plywood on support slab,Erect rebar access platforms,Fix bottom slab&lower wall rebar,Install steel cast-in items,Dismantle inner access platforms,Move formwork launching girder,Install inner forms,Fix upper wall&top slab rebar and install steel cast-in items,Dismantle rebar access platforms,Inspect rebar etc.,Erect stop end and outer forms,Do final inspection and prepare for placing concrete,Place concrete(24hr)and,Cure(5 days),Repetitive work,Inner Form,Outer Form,Rain Shelter,Launching Girder,Formwork System(Kumkang,Doka),.Element Production,Set plywood,Erect rebar access platforms,Fix bottom slab&lower wall rebar,Rebar work platform,Bottom plywood,.Element Production,Move Launching Girder and,Set Inner Form,.Element Production,Fix upper wall&top slab rebar,Install steel cast-in items,Erect stop end and outer forms,prepare for concreting,.Element Production,Concrete placing and curing,Concrete placing,(24 hours continuous working),Quantity,:2,264,/seg,Equipment,-Concrete pump with 32m boom:4 active,2 standby,-Static concrete pumps:2,-Concrete truck mixers :13,-Batching Plant(210,/hr):2,Curing in formwork:,Winter 5 7 days,Summer 4 days,(3,),Concrete constituent,Details,Strength,35 MPa,Slag Cement,319kg/,Water,145kg/,Addictive,Fly ash,83kg/,Silica Fume,12kg/,Admixture,Silk road,Econtax,High-performance water reducing agent,.Element Production,Cross section,Injectable,Water Stop,Shear Key,Shear Key,Shear Key,P.T.ducts,Shear Key,Omega Anchor Plate,Quantity,:32 tendons/element,(28 19strand+4 31 strand),Weight,:132Tonnes/element,Strand,:7 wire,x 15.24mm diameter,Duct,:110mm or 140mm,Manufacturer,Trelleborg,Material,SBR,Service life,100years,Length(L),66m,Purpose,:It is cast in to each side of,the segment joints and is the,first barrier against water ingress.,It can accommodate movement,due to temperature,shrinkage,creep,and earthquake.,.Element Production,Duct,Bearing plate,Strand,Wedge,Anchor head,Grout inlet,OMEGA SEAL,Manufacturer,Trelleborg Bakker,Size,OS 240-40,Material,SBR,Service life,100years,Purpose,:Second barrier against water ingress and can ac,commodate movement due to temperature,shrinkage,creep and earthquake.,.Element Production,Post Tensioning,&Grouting,.Element Production,GINA GASKET,Storing,Loading,Unloading,.Element Production,“GINA GASKET”,410mm,360mm,GINA GASKET,Manufacturer,Yokohama,Size,M34,Material,NR,Durability,100years,Purpose:Installed on the primary end of one element to form a watertight seal,against the steel front plate of the secondary end of the adjacent,element at the immersion joint.It can accommodate movement due,to,temperature,shrinkage,creep,earthquake.,.Element Production,Ballast Tank,pipe-work and pump layout,Ballast Tank(6/element),Size,:20.25 9.1 5.0m,Capacity,:920,each,Main pump(2 No.),Flow rate:1,000t/hr(110kw),Sub pump(1No.),Flow rate:200t/hr(19kw),.Element Production,Temporary Steel Bulkhead Assembly,.Element Production,Pore filling,1,st,(green)coat of Polyurea,Primer&surface pore filling,2,nd,(grey)coat of Polyurea,Polyurea waterproofing membrane to outer walls and upper haunch,Waterproofing membrane required by Government Audit,.Element Production,15,.Warping Towing and Mooring,Flooding the dry dock and preparing for towing,Removing vertical seals,Moving Floating Gate,(29.215.015.35m),2 valves 1000mm,100T crane,15,.Warping Towing and Mooring,Warping out,2600HP Tug,15,Towing,.Warping,Towing and Mooring,Towing and Mooring,Securing in mooring area,E1,E2,E3&E4 in mooring area,.Warping,Towing and Mooring,Jungjuk approach(255m),Immersed Tunnel(3,239m),Gaduk approach(170m),Reclamation for artificial island,with sea defence works,Cut&Cover Tunnel21.25m x 8 segments=170m),Approach Ramp(85m),Ventilation system,Earthworks and,sea defence works,Cut&Cover Tunnel,(21.25m x 8 segments=170m),Ventilation system,Soft ground improvement,Dredging and foundation work,18 No.Towing,Mooring,Immersing,Backfilling and Protection work,Inside finishing work,Plan&Elevation of Tunnel,1,st,Element,18,th,Element,Jungju Island,Gaduk Island,13,Th,Element,Depth:about 50m(M.S.L-Bottom level of Element),.Immersion Works,Foundation Ground,Section,Basic design,Detail design,The present,West section,SCP+Preloading,SCP+Preloading,SCP+Preloading,Main section,-,CDM,CDM,East section,Rubble foundation,Rubble foundation,Rubble foundation,Ground improvement at main section,-Basic design:limited ground improvement plan(displacement,SCP)at exposed part of start/end point,-Addition of ground improvement plan(CDM)to increase the safety for long-term settlement at general section,Main section,West section,East section,Busan,Injecting using specific agitation machine-Establishing a round Pile,CDM(Cement Deep Mixing),C D M,1,000 4EA,112,093m,Construction period,2006.12.23 2007.5.30,Design standard,Design strength,8,/,W/C,0.8,Cement,175,/,SCP(Sand Compaction Pile),S C P,2,000,61,972m,Construction period,1,600,30,302m,Total,92,274m,2006.8.15 2007.6.30,Trial mix,Characteristics,of fresh concrete,Compressive&,Tensile strength,Chloride Diffusion co-efficient,D,CL,?10,-12,/s,Free of thermal cracks,End,YES,No,NO,Yes,Traditional approach,Duracrete approach,Requirements of Slump,compressive strength,air content etc.,Consider proportions of constituents,Grading of sand,maximum size of coarse,Aggregate,W/C etc,Trial Mix,Evaluation of performance,(Workability,Compressive strength),Not,OK,End,OK,Traditional mix design,(Focus on strength),GK Project Durable mix designGK Project,(Focus on durability),(Chloride diffusion,Control of thermal cracks),Mix design of Durable concrete,Immersion/Locking Fill,Stabilization of tunnel element,Stage 1,-After checking the alignment of element,overweight is increased:6%(Net 2,700t),-Dismantlement of immersion pontoon(containing EPS),-Prompt performance of Locking Fill for day and night,(Preventing element to move by the force of wave,Stabilization of tunnel element,Stage 2,-After completion of Locking Fill,Backfill and protection work,are executed,Characteristic of each protection material,Core-Loc:Good crush effect,Weak failure resistance,Accropode:Good crush effect,Good failure resistance,TTP:2 layer should be constructed to confirm crush effect and stability.,Core-Loc,Accropode II,TTP,Protection work for tunnel,Wave according to offshore,-According to abysmal wave,High Hs and Tp,-When abysmal wave is changed,high variability of,wave condition by being transferred directly,-Due to big size of element(180m),before and after immersion,large force of wave,Prediction of immersion time and decision making of,work progress,at each stage,Limited work condition and guarantee of,stability within time plan,Specific subjects of Tunnel element,Work preparation and Counter plan,-Prediction for wave condition and variability by weather forecast at,immersion section,-G,uarantee of,stability by development and application of,EPS System,-Reduction of immersion time by application of Gravel Bed method,-After immersion,when wave condition goes worse,injecting water,into the tunnel,The increase of self-weight strengthens frictional resistance force,EPS,(External Lifting&Positioning System),Control room,