预制外挂墙板设计手册

PrecastWallPanelDesignByEdwardLosch,PE,SEWhatisaPrecastConcreteSandwichWallPanel?TypicalPrecastConcreteSandwichWallPanelLong-LineFormWythe(s)PrestressedTrucked&Erected(Non-loadbearing)Load-BearingPanelsNon-CompositeCompositeHowareSandwichWallPanelsManufactured?Wet-Cast:Wet-CastCompositeDesignShearTrussesSolidZonesNon-CompositeWytheConnectorsPinConnectorsInsertedinPre-DrilledHolesRevealStripsGluedtoSteelFormFormLinerLocatedinPanelFormPanelwithFormLinerImpressionandRevealsCorniceCastSeparately,AttachedatSiteSandblastingPanel-SideLiftersRequiredStainedFinishCorewallPanelwithRandomRibFinishRandomRibFinishSpancreteNon-compositeWallPanelSectionDry-Cast:8ft.WideSpancretePanelsSpancrete8ft.SpandrelPanels:Double-TeeWallPanelSectionPECSoundwallPECSoundwallformusedforScattered-SitehousinginChicagoScattered-SiteHousingScattered-SiteHousing-ExpandedPolystyrene,R=4perinch-ExtrudedPolystyrene,R=5-Polyisocyanurate,R=7to10-Phenolicfoam:cancausecorrosionwhenwet!InsulationTypes:ThermalLagfromConcretePanelMassThermalLagfromMassofConcretePanelUsePCIMnl116(not117):“ManualforQualityControlforPlantsandProductionofStructuralPrecastConcreteProducts”ManufacturingTolerancesHowareSandwichWallPanelsHandled&Erected?LifterLocationsforStripping&HandlingYardStorageYardHandlingwithShuttle-LiftTruckingExtra-WidePanelonSlantFrame:PanelsarrivingattheJobSiteSingle-LineLiftTwo-LineLiftFaceLiftersinFormTopEdgeLiftersinFormBracingGuidelines:-UseASCE7-95DesignLoads-Reducefrom50yrto5yrRe-occurrence-Use1.5FactorofSafetyforPipeBracesBraceto“Deadmen”:HowareSandwichWallPanelsDesigned?SandwichWallPanelwithDockDoorOpening-PlanViewSandwichWallPanelwithDockDoorOpening-SectionStrippingForces,ShearandMomentDiagramsStrippingStresseswith1.4HandlingFactorErectionForces,ShearandMomentDiagrams-2LineLiftErectionStresseswith1.2HandlingFactorFactoredErectionMoments-UltimateCapacityCheckIn-PlaceLoadsforLoad-BearingPanel:AppliedLoads:-Wind-Gravity(Roof)-EarthPressureAccountforDifferentialTemperatureStrainsServiceWindLoadMomentDiagramServiceWindLoadStressesACI318Section14.8.4:Themaximumdeflectionduetoserviceloads,includingP-Deltaeffects,shallnotexceedL/150.DifferentialTemperatureStrainMomentDiagramDifferentialTemperatureStresses-NotePanelBowUltimateCapacityInteractionCurves-Dead+Live+WindUltimateCapacityInteractionCurves-TemperatureStrainRelevantACI318CodeSections:•14.3.6,18.11.2.2:Columntiesnotrequiredwhenflexuraltensioncontrols•14.2.7:Maximumheight/thicknessratioof25:1canbewaivedwhenstructuralanalysisisdone(P-Delta)•14.2.7,16.4.2,18.11.2.3:Minimumtransversereinforcementratioof0.001canbeused(insteadof0.002)•11.10.8:Shearwallsdonotusuallyneedanyshearreinforcement•10.11.5:Mustusea2ndordernon-linearanalysisincludingcrackingwhenkl/r100IndividualLinkedShearWallDesignExamplesDesignTipstoSave$$:-Userepetitiontoreduceformchanges-UsePrecaster’slibraryofstandardconnectiondetails-Anticipateerectionsequencetominimizemove-ins-Usemodulesforbayspacing:42’or48’for12’widepanels40’or50’for10’widepanelsDesignTips(continued):-Punchedopeningspreferredover“pork-chops”andC-shapes:HungPanelsoverDockRabbetatTopofPanelforBearingSteelBar-JoistContinuousJoistBearingAngleIndividualJoistBearingAnglesCast-inDeckBearingLedgeBeamBearingPocketNut-TypeSlottedTie-backConnectionwithThreadedRodSlottedTie-backConnectionwithStrapKnife-EdgeEmbeddedPlatesBearingonColumnHaunchesSteelBearingTubeHaunchinFormHungPanelRotationPreferredBaseDetailtoPreventPotentialWaterInfiltrationatFloorLevel