A Stochastic Model for Prediction of Accumulative Damage in Highway Pavements
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1971-01-01
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Edition:Final Report
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Abstract:A review of the state of the art of pavement damage is presented with special emphasis upon load associated factors affecting the initiation, propagation, and accumulation of damage. The pavement is viewed as a structure sensitive engineering system. Such systems are defined as those in which the distribution of damage or the failure of a component results in a decrease in the level of performance rather than the abrupt incidence of total failure. Failure for such systems is thus the limiting extent of the damage which has been accumulated as a consequence of structural deterioration over a range of stress, strain, time, and temperature conditions in an operational environment. A framework for a rational method of analysis of pavement structures is proposed. This method utilizes a three-layer viscoelastic model, a cumulative damage model, and a simulation technique. In this framework the input variables of environment, layer material properties and geometry are described in a stochastic manner utilizing the Monte Carlo simulation technique.
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