2.3.2. Modelling the Experiment

The 3D semi-analytical model predicts deflection field over the jointed slabs for one position of the load. Though this model solves a static case, it can be used to compare a moving load as they are not impact loads. During the experiment, a moving wheel is generating deflections all over slabs in space, so a total of 18 realizations of the model with incremental load positions of 0.4 m toward the joint are considered. When the load is over the joint, then linear combinations of realizations with fine increments of 0.05 m load positions are used. This generates a set of deflection response to form a modelled signal which can be compared to the measurements ultimately. The distance between the centre of the load wheel and the laser signal is estimated and used in generating deflections from the model. To account for the influence of sinking of the beam's end support, a linear combination of deflections from cases when the load is in front of the beam's support and near the edge is implemented. In the end, the deflection at the edges of the slab containing the joint is modelled, which is equivalent to experimentally measured deflection by the laser at the centre of the beam.
