AASHTO LRFD COMPOSITE STEEL GIRDER BRIDGE GIRDER BRIDGE MODEL

  • Bridge model – simple
  • Bridge model – construction staging
  • Bridge model components for construction staging
  • Example – simple model
  • Example – section properties and live load distribution factor
  • Example – flange stresses, DC
  • Example – flange stresses, DW
  • Example – flange stresses, LL + IM
  • Example – summary of stresses
  • Example – revised model
  • Example – revised stresses
  • Example – check proportions for unbraced length, rt
  • Example – cross brace spacing
  • Example – check web proportions

Bridge Design Flowchart

Start Material Selection Design Basis Construction Stages Preliminary Girder Design Based on Span Length & Width Dead Load Live Load Service Limit Checks Preliminary Tendon Design Prestress Losses Concrete Stress Checks at Construction Concrete Stress Checks at Service Canber and Deflection Strength Flexure Strength Shear Interface Shear Design Deck Design Bridge Modeling