Study of slab on grade thickness for racking throughout Finite Element Method
DOI:
https://doi.org/10.3989/ic.15.093Keywords:
Racking post loading, slab on grade thickness, FEMAbstract
In the current paper, comparative analyses between three procedures of calculation have been developed, in order to obtain slab on grade thicknesses when the slabs are loaded with racking posts. For this case, the classical expression of Westergaard cannot be applied directly because of the influence of the remainder posts and their proximity. Firstly, the comparative analysis has been done by means of bibliographical design abacus; in the second place, the slab is discretized with finite elements resting above the soil modelled with soil reaction springs; and in third place, a three dimensional solid finite element model represents the base and subgrade set. In the paper some innovative issues regarding the thickness performance and the grade slab interaction are developed. Finally, a series of graphical results are obtained allowing for the pre-design.
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