The structural evaluationmodule calculates the stress envelopes and
checks all the limit states and the geometric constraints represented by
Eq. (2). Structural constraints as well as the combination of actions follow
standard provisions for the Spanish design of this type of structure
[43,44] and include checks of the serviceability and ULSs of
flexure and shear for the stress envelopes due to the loads. IAP-98 [43]
was considered to determine the variable actions applied to the deck.
However, it should be noted that recently these actions have been
changed to adapt to the Eurocode content. The design live load consists
of three axis of 200 kN each (1.5 m distance between axes),
superimposed with a uniform load of 4.0 kN/m2. The dead load is a
wearing surface of 0.09 m as well as a uniformly distributed load of 2
× 0.5 kN/m for concrete bridge barrier rails installed along the edge of
the deck. The combinations of actions include all construction stages.
Laminated neoprene bearing pads are used to support the precast concrete
bridge beams. A single support point is used at each end