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Beam Bridge Construction & Design - Bright Hub ...

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Beam bridges are one of the most commonly used bridges for covering short distances, and are generally constructed on the local roads. PagecontentWhatisaBridge?CharacteristicsofBeamBridges-TypesofBeamBridgesBeamBridgesMaterialsImageCredits:WhatisaBridge?Abridgeisessentiallyaconstructionthatisbuilttocoveraroad,valley,waterbody,orothernaturalobstaclestoprovidearouteoverthebarrier.Severalbridgedesignsareusedthatdependupontheirfunctionandthesoilconditionsofthesiteforbridgeconstruction.Abridgeisdescribednormallybyitsformofconstruction,likebeam,truss,arch,etc.Abridgemayalsobecharacterizedbytheconstructionmaterialsused,likeconcrete,stone,andmetal.Abridgemayhavedifferenttypesofspansthatincludesimple,cantilever,continuousetc.Beambridgescanbesimpleandmadeofwoodbeams.Heavybeamsarecarriedbyabridgecraneusingabeamclamptoholdthebeams.Bridgeloadratingisexecutedtoestablishtheloadsthatcanbesafelycarriedbythebeambridges.Itisessentialtocalculatethebendingmomentsinabeamtoestablishasafedesignofthebeambridges.CharacteristicsofBeamBridges-TypesofBeamBridgesBeambridgesbasicallyconsistofbeamthatislaidacrossthepiersorsupports.Thebeamshouldpossessthestrengthtobeartheloadsthatareexpectedtobeplacedonit.Theseloadsarebornebythebridgepiers.Theloadscausethebeamtopedgetobecompressed,whiletheloweredgeisbeingstretchedandisundertension.Existingbeambridgesareformedbygirders,normallyboxgirders,trussesorI-beams,thataresupportedonstrongpiers.Boxgirdersarestretched,boxshapedelementsthataremoresuitabletobearthetwistingloads.Trussesconsistofoneormoretriangularunitsconnectedatjointsornodes.I-beamsareeconomicalandsimpletofabricate.TheyaresimplybeamswithanI-shapedorH-shapedcross-section.Thehorizontalelementsofthe“I”designareflangesandtheverticalistheweboftheconstruction.Otherbeambridgesmaybefabricatedfromconcretebeamsthatarepre-stressed.Thesematerialspossessthesteelcharacteristicstoendureloadsintension,andconcretestrengthtobearthecompressiveloads.Thebeambridge’sstrengthislargelyinfluencedbythedistancebetweenthepiers.Therefore,thebeambridgesarenormallynotsuitableforlongerlength,unlessseveralsuchbridgesareconnectedwitheachother.Thebeambridge’sspanisdependentuponthebeamweightandthematerialsstrength.Asthebridgematerialthickens,itscapacitytoholdtheloadsincreases.Therefore,thespancouldalsobeincreased.However,asturdybeammaybecometooheavy,andsag.Thebeambridgescanbesupportedbytheutilizationoftrusses.BeamBridgesMaterialsWiththeadvancementintechnology,materialssciencehasalsoadvancedconsiderably.Beambridgesmaterialsbeingusedarestrong,light,anddurable.Theadvancedmaterialsforbridgeconstructionhavegoodoperationalcharacteristics.Suchmaterialsincludereformulatedconcrete,compositematerialsthatarereinforcedwithfiber,steel,andpre-stressedmaterials.Pre-stressedconcreteiswellsuitedforbeambridgeconstructionsinceitcanendureexcessivecompressivestresses.Steelrodsarefixedintheconcretethatcanbearthetensileloads.Furthermore,pre-stressedconcreteischeaper.Thecurrenttechniquesincludeuseoffiniteelementanalysistoimprovethedesignofbeambridges.Distributionofstressesondifferentbridgeelementsisanalyzedtoensurestrongbeambridgesthatcanendurethebridgeloads.Thebeamsshouldbeheldbypiersattheendstoincreasethebridgeloadbearingcapacity.Concrete,steel,orstonesarenormallyusedfortheconstructionofpiers.Sincestonesandnon-reinforcedconcreteareweakintension,theyarenormallyusedforbeambridgesthataredesignedforlighterloads.ImageCredits:https://commons.wikimedia.org:ConcreteBeamBridgehttps://commons.wikimedia.org:IronTrussBeamBridgeshttps://commons.wikimedia.org:NiagaraFallsRailwayBeamBridge« PreviousCharacteristicsofGlassFiberReinforcedConcrete(GFRC)forConsumersNext »TheLargestUnderwaterPipeline:LangeledPipelinereportthisadLoadingComments...RecentPostsCommercialEnergyUsage:LearnaboutEmissionLevelsofCommercialBuildingsTop10CivilEngineeringCollegesBestReasonstoStudyCivilEngineeringTimetoUpgradeYourHVAC?Here'sWhatYouNeedtoKnow4MostCommonHVACIssues&HowtoFixThemTagsCivilEngineering(474) ElectricalEngineering(451) MarineEngineering(810) MechanicalEngineering(1377)CategoriesBuildingConstruction&DesignCADandAutoCADCommercialApplications&ElectricalProjectsConcreteTechnologyConsumerAppliances&ElectronicsEnergy&PowerPlantsFluidMechanics&HowitRelatestoMechanicalEngineeringGeotechnicalEngineeringHobbyist&DIYElectronicDevices&CircuitsHVAC:Heating,Ventilation&Air-ConditioningHydraulicsinCivilEngineeringLifeatSeaMachineandMechanismDesignManufacturingTechnologyMarineHistoryMarineMachinery,Engines&ControlsNavalArchitecture&ShipDesignforMarineEngineersPowerTransmissionandDistributionRoboticsStructuralEngineeringThermodynamicsxx

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