References(20) A rational method for evaluating the skin friction of non-displacement piles in sandy soils is presented by reconsidering the model which has already been proposed by the authors. The revision of the model is mainly made by assuming the soil-pile interaction mechanism as a simple direct shear mode in relation to the large strain state of soils. The model is characterized by a coefficient of effective horizontal stress averaged through the whole length of the pile derived as a function of a large strain state friction angle. The characteristics and ability of the model are shown by the parametric studies and the applicability of the model is verified through a database of full scale pile load tests.
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