Abstract
This paper aims at calculating the transfer behavior of negative friction of single pile in two-layer soil in pile foundation. Based on the traditional load transfer function method, a model for calculating the transfer behavior of negative friction on a single pile in a two-layer soil profile is presented in this paper. In this model, the settlement of soil is assumed to follow bi-linear distribution; the transfer function is linear elastic and full plastic; the pile toe resistance is assumed to vary linearly with movement. By solving the model equations, the analytic solution of relative displacement and axial force of pile have been obtained. Moreover, a case history from literature is used to validate the proposed theoretical model. The prediction of negative friction from the theoretical model agrees well with the measured value from the case history.
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