ABSTRACT
Introduction............................................................................................................ 102 The.John.A..Roebling.Bridge...................................................................... 102 Research.Objective.and.Scope.................................................................... 102
Capacity.Evaluation.of.the.Bridge.Deck.Elements................................................ 102 Steel.Decking.............................................................................................. 104 Steel.Channels.(C)....................................................................................... 106 Steel.Standards.(S)...................................................................................... 106 Steel.Built-Up.Sections............................................................................... 107
Bridge.Loadings..................................................................................................... 108 Self-Weight.Loads....................................................................................... 108 Live.Loads................................................................................................... 108
Truck.Types...................................................................................... 108 Bus.Types.......................................................................................... 108
Assumptions........................................................................................................... 108 Element.Sectional.and.Strength.Capacity.Losses.................................................. 108 Element.Level.Analysis.......................................................................................... 109
Structural.Idealization................................................................................. 110 Steel.Decking................................................................................... 110 Steel.Channels.................................................................................. 112 Steel.Standards................................................................................. 112 Steel.Built-Up.Sections..................................................................... 113
Maximum.Allowable.Gross.Vehicle.Weight.(GVW)................................. 113 Maximum.Allowable.GVW.on.the.Steel.Decking........................... 113 Maximum.Allowable.GVW.on.the.Steel.Channels......................... 114 Maximum.Allowable.GVW.on.the.Steel.Standards........................ 114 Maximum.Allowable.GVW.on.the.Steel.Built-Up.Sections............ 114
Critical.Member.for.Determining.GVW.................................................... 114
Sample.Calculations.for.GVW.Limit.......................................................... 114 Tributary.Width,.Length,.and.Area.................................................. 115 Dead.Loads....................................................................................... 115 Live.Loads........................................................................................ 115 Bending.Moments............................................................................. 116 Allowable.GVW.Calculation............................................................ 116
Allowable.GVW.of.Trucks.and.Buses........................................................ 117 Allowable.GVW.for.Different.Deck.Weights............................................. 117
Summary.and.Conclusions..................................................................................... 118 References............................................................................................................... 119
Completed.in.1867,.the.John.A..Roebling.Bridge.(see.Figure.6.1)—formerly.the.Covington-Cincinnati.Suspension.Bridge-was. the.first.permanent.bridge. to.span. the. Ohio.River.between.Kentucky.and.Ohio.. In.1975,. the.bridge.was.designated.as.a. National.Historic.Civil.Engineering.Landmark. by. the.American.Society.of.Civil. Engineers.and.was.listed.on.the.National.Register.of.Historic.Places.
