AASHTO LRFD Segmental Post-Tensioned Box Bridge Model

  • Bridge computer model
  • Longitudinal model – two node elements
  • Transverse model – two node elements
  • Longitudinal and transverse model – plate elements
  • Longitudinal and transverse model – brick elements
  • Example

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