Computational Modelling in the Theory of Concrete Pavements

Paper by NOVOTNY from ISCR 8th 1998 Lisbon Portugal

The jointed concrete pavement is analysed as a system of interacting rectangular slabs transferring wheel loads into an elastic layered subgrade. The finite element plate analysis is combined with the assumption of a linear contact stress variation over triangular elements of the contact region division. The linking forces are introduced to model the load transfer across the joints. The unknown contact stress nodal intensities as well as unknown linking forces are determined in an iterative way to fulfil slab/foundation and slab/slab contact (or interaction) conditions. The temperature effects are also considered and proper space is reserved for further modelling of inelastic and additional environmental effects. It is pointed out that pavement design should be based on full information about pavement stressing, in contradiction to procedures accounting only for the axle load induced stresses.

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