A grillage analysis for 4 main beams supported on pinned or rotational springs over 3 spans 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. Optional support conditions allow integral bridge decks and ‘ladder’ type bridges (2 main beams) to be analysed. Differential settlement can be modelled as required.

Contents (64 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
• validation using structural analysis software