Thermal cyclic loads

Am trying to model the effect of thermal loading on the backfill behind  integral abutment by using Plaxis 2D. I  modelled the concrete bridge deck as Linear Plate element and provide a prescribed displacement near  the top of the abutment. The applied displacement was obtained from the coefficient of thermal expansion of the concrete, Span of the concrete deck and the change in Temperature.  

I have two questions,

  1. In this scenario, how can I take into account the creep and shrinkage deformation of the concrete bridge deck with time…?
  2. How can I simulate several numbers of cyclic loads...? i.e. Number of loading cycles near the top of bridge abutment e.g. 200