A grillage analysis for a bridge abutment supported on fixed or rotational springs using a stiffness matrix based on 3 degrees of freedom at each joint – vertical deflection and 2 rotations. Loading is by joint forces or moments in 2 directions. Rotational restraints can be modelled for wing walls and bridge deck supports where applicable. Model facilitates the analysis of earth pressures and vehicle surcharge loading.

Contents (25 pages)

  • General arrangement allowing definition of geometry
  • input data for beam and support properties
  • loading input and results summary for key shear, moment and displacement results
  • matrix parameters and full set of results.
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