A non-linear finite element analysis was carried out to conduct a parametric study on the response of slabs on grade to industrial trucks with single wheel axles loading. The study covers
the load position in relation to slab edges, slab proportions, the reinforcement content and its method of arrangement, and the modulus of subgrade reaction. In the analysis, the subgrade is
represented by boundary-spring elements of a non-tension model to simulate the soil-resistance characteristics. The study shows that the load-carrying capacity of slab panels is substantially
influenced by panel thickness, and to a lesser extent by the modulus of subgrade reaction. The reinforcement content has a negligible effect. The application of a linear finite element procedure to the range of slab panels investigated, yields in general acceptable load-carrying capacities as compared to the results of NLFEA. |
