SPEAKER PRECAST SEGMENTAL BRIDGE - …courses/atce2/Precast.pdf · 2 PRECAST SEGMENTAL BRIDGE...

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PRECAST SEGMENTAL BRIDGEPRECAST SEGMENTAL BRIDGE

December 6, 2005December 6, 2005

SPEAKERSPEAKER

Name: KimioKimio SAITOSAITO

Affiliation: Kajima CorporationKajima Corporation

Academic Background: Master of Engineering from Master of Engineering from Waseda Waseda Univ.Univ.

SPEAKERSPEAKERApril 1989 – August 1992:

Design EngineerDesign Div. of Kajima Corp.Designed Concrete CableDesigned Concrete Cable--stayed Bridgestayed Bridge

September 1992 – August 1994:Construction EngineerOsaka Branch of Kajima Corp.Constructed Concrete CableConstructed Concrete Cable--stayed stayed BridgeBridge

September 1994 – September 1996:Design EngineerDesign Div. of Kajima Corp.Designed Concrete Box Girder Bridge Designed Concrete Box Girder Bridge Utilizing Entire External Tendon SystemUtilizing Entire External Tendon System

SPEAKERSPEAKEROctober 1996 – September 1998:

Engineering TraineeEngineering TraineeLoBuonoLoBuono Armstrong and Associates, FloridaArmstrong and Associates, FloridaDesigned Precast Segmental Box Girder Designed Precast Segmental Box Girder BridgeBridge

SPEAKERSPEAKEROctober 1998 – March 2002:

Senior Design EngineerDesign Div. of Kajima Corp.Designed Railway Bridge with Light Designed Railway Bridge with Light Weight ConcreteWeight ConcreteDesigned Designed ““UchimakiUchimaki ViaductViaduct””

April 2002 – Present:Senior Construction EngineerYokohama Branch of Kajima Corp.Constructed Constructed ““UchimakiUchimaki ViaductViaduct””

SCHEDULESCHEDULE

1. 1. General Information (10min.)General Information (10min.)

2. 2. History and Applications in U.S. (15min.)History and Applications in U.S. (15min.)

3. 3. Recent Applications in Japan (10min.)Recent Applications in Japan (10min.)

4. 4. Case Study about Case Study about Uchimaki Uchimaki Viaduct (15min.)Viaduct (15min.)

5. 5. Movie of Movie of UchimakiUchimaki Viaduct Project (15min.)Viaduct Project (15min.)

6. 6. Discussions (15min.)Discussions (15min.)

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DefinitionsDefinitions

Bridge girders are fabricated as a number of Bridge girders are fabricated as a number of precast segments at a casting yard.precast segments at a casting yard.

The precast segments are transported from the The precast segments are transported from the casting yard to an erection site.casting yard to an erection site.

The precast segments are erected and unified The precast segments are erected and unified into a girder by applying longitudinal prestress. into a girder by applying longitudinal prestress.


Advantage and DisadvantageAdvantage and Disadvantage

Shorten erection period Shorten erection period

Provide high quality members Provide high quality members

Reduce the number of laborsReduce the number of labors


Advantage and DisadvantageAdvantage and Disadvantage

Require large space for fabrication and storage Require large space for fabrication and storage

Require effective transportation systemRequire effective transportation system

Require special fabrication & erection machines Require special fabrication & erection machines

Require enough scale of project (contract)Require enough scale of project (contract)


Technical AspectsTechnical Aspects

Additional prestressAdditional prestress

Special care for geometry controlSpecial care for geometry control

Special care for joints and keys Special care for joints and keys

FABRICATION & ERECTIONFABRICATION & ERECTION

Fabrication MethodFabrication Method

Erection MethodErection Method

ShortShort--line or Longline or Long--line Match Castline Match Cast

Balanced Cantilever (for long span) Balanced Cantilever (for long span)

SpanSpan--byby--span (for short and medium span) span (for short and medium span)

N+1 N

1.Start

Bulkhead Wet cast Match cast

N+1 N

2. Hanging Soffit Form

N+ Ｎ

3. Shifting Segments(n & n+1)

N+1 N

4. Hanging Soffit Form

N+1 N

5. Setting Soffit Form & Adjusting Segment(n+1)

N+1 N

6. Hanging Re-bar Cage

N+1

N

7. Setting Re-bar Cage & Taking Segment(n) out

N+1

8. Setting Side Form & Core Form

N+2

N+1

9.Concrete Pouring

N+2

CONCRETE

Ｎ

10. Completion of Segment(n+2)

Ｎ

CompleteComplete

SHORTSHORT--LINE MATCH CASTLINE MATCH CAST

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SHORTSHORT--LINE MATCH CASTLINE MATCH CAST

Fixed Bulkhead & Movable Fixed Bulkhead & Movable SoffitSoffit FormForm

Require small space for casting machineRequire small space for casting machine

Suitable for girder with constant depthSuitable for girder with constant depth

Correspond to alignmentCorrespond to alignment

Require careful geometry control Require careful geometry control

LONGLONG--LINE MATCH CASTLINE MATCH CAST

LONGLONG--LINE MATCH CASTLINE MATCH CAST

Movable Bulkhead & Fixed Movable Bulkhead & Fixed SoffitSoffit FormForm

Require large space for casting machineRequire large space for casting machine

Suitable for girder with variable depthSuitable for girder with variable depth

Suitable for straight bridgeSuitable for straight bridge

BALANCED CANTILEVERBALANCED CANTILEVER

SPANSPAN--BYBY--SPANSPAN

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History & Applications in U.S.History & Applications in U.S.

Griffith Road CrossingGriffith Road Crossing

•• Single 15m Span ISingle 15m Span I--girdergirder•• New YorkNew York•• 1950 and 1951 1950 and 1951

Photo: Provided by ASBI

Griffith Road CrossingGriffith Road Crossing

•• Single 15m Span ISingle 15m Span I--girdergirder•• New YorkNew York•• 1950 and 1951 1950 and 1951


JFK Memorial CausewayJFK Memorial Causeway

•• 6060m Center Spanm Center Span•• TexasTexas•• 1972 1972


JFK Memorial CausewayJFK Memorial Causeway

•• 6060m Center Spanm Center Span•• TexasTexas•• 1972 1972


KishwaukeeKishwaukee River BridgesRiver Bridges

•• 7676m Interior Spansm Interior Spans•• IllinoisIllinois•• 1979 1979


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KishwaukeeKishwaukee River BridgesRiver Bridges

•• 7676m Interior Spansm Interior Spans•• IllinoisIllinois•• 1979 1979


Long Key BridgeLong Key Bridge

•• FloridaFlorida•• 1979 1979


Long Key BridgeLong Key Bridge



Seven Mile BridgeSeven Mile Bridge



Seven Mile BridgeSeven Mile Bridge



Windward ViaductWindward Viaduct

•• HawaiiHawaii•• 1993 1993


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Garcon Point BridgeGarcon Point Bridge


VARIATIONSVARIATIONS


Linn Cove ViaductLinn Cove Viaduct

•• North CarolinaNorth Carolina•• 1984 1984


Sunshine Skyway BridgeSunshine Skyway Bridge



Sunshine Skyway BridgeSunshine Skyway Bridge



James River BridgeJames River Bridge

•• VirginiaVirginia•• 1990 1990


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New Baldwin BridgeNew Baldwin Bridge

•• MassachusettsMassachusetts•• 1993 1993


New Baldwin BridgeNew Baldwin Bridge

•• MassachusettsMassachusetts•• 1993 1993


Natchez Trace ParkwayNatchez Trace Parkway

•• TennesseeTennessee•• 1993 1993

Confederation BridgeConfederation Bridge

•• CanadaCanada•• 1996 1996





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APPLICATIONS IN URBAN AREAAPPLICATIONS IN URBAN AREA


San Antonio Y ProjectSan Antonio Y Project

•• TexasTexas•• 1993 1993


San Antonio Y ProjectSan Antonio Y Project

•• TexasTexas•• 1993 1993


II--75 / I75 / I--95 Interchange95 Interchange



MARTAMARTA

•• GeorgiaGeorgia•• 1985 1985


Boston ProjectBoston Project

•• MassachusettsMassachusetts•• 200X200X


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STANDARD SEGMENTSTANDARD SEGMENT

Develop Standard SegmentDevelop Standard Segment

Supplied by Precast MakersSupplied by Precast Makers

Reduce Equipment CostReduce Equipment Cost

Extend the Application to Smaller ProjectsExtend the Application to Smaller Projects

Spans: 30.5m Spans: 30.5m -- 45.7m 45.7m (Span by span)(Span by span)30.5m 30.5m –– 61.0m 61.0m (Balanced Cantilever)(Balanced Cantilever)

Width: 8.40m Width: 8.40m –– 13.50m13.50mGirder Height: 1.80m Girder Height: 1.80m –– 3.00m3.00m

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Recent Applications in JapanRecent Applications in Japan

RECENT APPROACHRECENT APPROACH

The weight of segments are reduced by dividing The weight of segments are reduced by dividing the cross section into several parts.the cross section into several parts.

The segments can be transported through The segments can be transported through general highway by reducing the weight.general highway by reducing the weight.

The cost of erection machines can be reduced The cost of erection machines can be reduced by light weight segments. by light weight segments.

The erection period can not be minimized.The erection period can not be minimized.

Furukawa ViaductFurukawa Viaduct

•• U shape Segment + RibU shape Segment + Rib•• Precast Panel Precast Panel

Reference: Bridge and Foundation Engineering







Kamikazue Kamikazue ViaductViaduct

•• Dual SegmentDual SegmentReference: Bridge and Foundation Engineering

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Uchimaki Uchimaki ViaductViaduct

•• Core SegmentCore Segment•• External StrutExternal Strut•• Cast in Place Wing SlabCast in Place Wing Slab


•• Core SegmentCore Segment•• External StrutExternal Strut•• Cast in Place Wing Slab Cast in Place Wing Slab


•• Core SegmentCore Segment•• External StrutExternal Strut•• Cast in Place Wing Slab Cast in Place Wing Slab

YamakiriYamakiri ViaductViaduct

•• Core SegmentCore Segment•• External Strut + RibExternal Strut + Rib•• Precast Panel Precast Panel


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PRECAST SEGMENTAL BRIDGEPRECAST SEGMENTAL BRIDGECase Study about Case Study about Uchimaki Uchimaki ViaductViaduct


East BoundEast Bound

West BoundWest Bound

UCHIMAKI VIADUCT UCHIMAKI VIADUCT (PLOFILE)(PLOFILE)

TokyoTokyoNagoya 　

STRUTTED WING SLABSTRUTTED WING SLAB

Concrete Struts

CROSS SECTIONCROSS SECTION

Ac=11.910m2 8.940m2

Phase 1: Cast in Place Pier SegmentsPhase 1: Cast in Place Pier SegmentsPhase 2:Phase 2: Span by Span Erection of Precast SegmentsSpan by Span Erection of Precast SegmentsPhase 3: Assembling Struts + C.I.P. Wing Slabs Phase 3: Assembling Struts + C.I.P. Wing Slabs

ERECTION SEQUENCEERECTION SEQUENCE

ERECTION SEQUENCEERECTION SEQUENCE

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TYPICAL SEGMENTTYPICAL SEGMENT

770

12.5φ 530

１０，７４０１０，７４０

CASTING YARDCASTING YARD

CASTING YARDCASTING YARD C.I.P. PIER SEGMENTC.I.P. PIER SEGMENT

C.I.P. PIER SEGMENTC.I.P. PIER SEGMENTCasting YardHighway＋River

Highway

HighwayHighway

ERECTION SITEERECTION SITE

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SEGMENT DELIVERYSEGMENT DELIVERY

Erected

Bridge

Dec

k

Casting Yard



ＳＴＥＰ１：セグメントの運搬・仮吊り　　　　　　引寄せ・接着

SPANSPAN--BYBY--SPAN ERECTIONSPAN ERECTION


ＳＴＥＰ２：目地コンクリートの打設


ＳＴＥＰ３：主方向ＰＣ鋼材の挿入・緊張

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ＳＴＥＰ４：次径間への架設桁の移動 106106mm

ERECTION TRUSSERECTION TRUSS

WEIGHT: 7,840kNWEIGHT: 7,840kN

SPEAKER PRECAST SEGMENTAL BRIDGE - …courses/atce2/Precast.pdf · 2 PRECAST SEGMENTAL BRIDGE...

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