Uncertainties in consolidation parameters are generally studied using probabilities. Due to lack of data and knowledge it is proposed to consider consolidation parameters within a fuzzy sets framework, as composed of series of intervals which allow taking into account uncertainty. One of the noticeable advantages of such an approach is its ability to deal easily with uncertainty in a context of lack of data. A fuzzy finite difference scheme is implemented and results compared with available data and with results from methods using probabilistic parameter distribution approaches for 1-D consolidation in clay.
- coefficient of consolidation
- parameter uncertainty
- fuzzy sets
- degree of uncertainty
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