Fig 2.72 Structural Model for Design of Box Girder Bridge...
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Figure 2.72 Structural models for design of a hollow box girder bridge Distortion of cross-section Equivalent structural system Beam Longitudinal design Transverse design Wheel loads Equivalent slabs (part. restraint) Uniform loads Truss structure Member forces: – bending moment M – shear force V – torsional moment T – support forces F Centreline Assumption: plane cross-section Supports Centreline Top view part.restraint Wheel loads Support reactions as loads on truss system + Equivalent loads
Transcript of Fig 2.72 Structural Model for Design of Box Girder Bridge...
Figure 2.72 Structural models for design of a hollow box girder bridge
Distortion of cross-section
Equivalent structural system
Beam
Longitudinal design Transverse design
Wheel loads
Equivalent slabs(part. restraint)
Uniform loads
Truss structure
Member forces:– bending moment M– shear force V– torsional moment T– support forces F
Centreline
Assumption:plane cross-section
Supports
Centreline
Top view
part.restraintWheelloads
Support reactions asloads on truss system
+
Equivalentloads
