旧金山奥克兰湾大桥(自锚式悬索桥)施工

SanFrancisco–OaklandBayBridgeSelf-AnchoredSuspension(SAS)SpanSanFranciscoYerbaBuenaIslandTreasureIslandSingleTower,SelfAnchoredSuspensionBridgew/AsymmetricSpansTowerCentrallyLocatedBetweenRoadwaysOrthotropicSteelBoxGirders(OBG’s)Side-by-SideRoadwaysAerialViewatYerbaBuenaIslandSASSpanSkywayYerbaBuenaIslandTemporaryWorkStatusLimitsofTemporaryWorksTemporaryTower&TrussStatusFacts:•2,696MetricTonsofDrivingFrame•3,834MetricTonsofTower•7,869MetricTonsofTruss•6,500MetricTonsofPilingInstalledtoDate:2,696MetricTonsofDrivingFrame3,834MetricTonsofTower•7,120MetricTonsofTruss6,500MetricTonsofPiling36849125711101712141519131636812181517125MetersFirstMajorPickwithLCLPieceWeight–1,050MTTotalPickWeight–1,210MTTemporaryTrussErectionHighlights113MetersTotalPickWeight–1,006MTTemporaryTrussErectionHighlightsTemporaryWorksStatusRemainingSectionofTrusstobeInstalledTemporaryWorksStatusT-1ErectionTower–InstalledtoElev.38MSuperstructureFabricationShanghaiZhenhuaHeavyIndustryCompany(ZPMC)Shanghai,ChinaScheduledtoArriveinOaklandon04-17-10OBGSegmentAssemblyCompleteAwaitingPrimePaintandLiftAssemblySegmentAssemblyYardLifts5and6inAssembly40M–800MTLift5W50M–1056MTLift6WLift1&2VerticalAssemblyTowerFabricationStatusthruMarch5,2010TowerShaftAssemblyandWeldingTowerShaftMillingLayDownTowerShaftAlignmentPriortoDrillingSplicePlatesatAssemblyTowerandDeviationSaddleCastingsJapanSteelWorksMuroran,JapanTowerSaddle(tobedeliveredthussummer)TowerSaddle(tobedeliveredthussummer)PierW2Saddle(tobedeliveredearlyApril)MiscellaneousFabricatedMaterialsHingePipeBeams-OregonIronWorksPortland,ORE2BearingsandShearKeys-HochangMachineryKoreaPre-fabricatedParallelWireStrand-ShanghaiPujiangCableChinaCableBands-GoodwinSteelCastingsUKE2BearingHingeKPipeBeamPPWSSwiftsCableBand1234Eastbound1WestboundOBGErectionSummarytoDateOBG’s–StatustoDateOBGLengthPieceWeightStatus1E25.5M926MTErected02-032E30.0M719MTErected02-093E25.0M507MTErected02-184E25.0M510MTErected02-251W25.5M926MTErected03-052W30.0M734MTErected03-193W25.0M520MTErected04-024W25.0M520MTErected04-09NOTE:PICKWEIGHT=PIECEWEIGHT+206MT(rigging)ShipmentNo.1EightOBG’s-Lifts1thru4EB&WBApproximately5,362MTofSteelShipUnloadingatPier7LiftingofOBG1E–(PickWeight1,132MetricTons)PushDistance–570’in2DaysOBGLift1ESettingontoCradleOBG1ENearingFinalPositionLift2EHoistingfromBarge(PickWeight925MetricTons)Lift2EMovedintoPlacePushDistance–480’in1.5DaysOBG3EonCradle~PushingFrameEngagedPushDistance390’in1DayLift4ESettingonTrussPushDistance–300’in1DayLift4EBeingPushedintoPlace1234OBGLifts1E,2E,3E&4EInFinalPositionLift1WSettingonTrussPushDistance–380’in1DayLift1WSittingonTrussLift1WatitsFinalPositionLift2WErectionontoTruss2,862Bolts/44.8kgSAWWeld1,176Bolts/25.6kgFCAWWeld1,176Bolts/25.6kgFCAWWeld1,080Bolts/22.6kgSAWWeld60Bolts/2.3kgFCAWWeldSummaryofAverageJoint•5,900-6,600Bolts•122.8kgofWeldCrossbeamConnectionatOBGLift2ECrossbeamwithinErectionGantryCrossbeamBeingTranslatedAcrossLift2ECrossbeamNo.1–5.5MHx10MWx15ML113MetricTonsCrossbeamNo.1CrossbeamBeingConnectedtoOBG2ECrossbeamNo.2ErectionCrossbeamNo.2CrossbeamNo.1GoogleEarthUpdates