Analytical prediction approach for response of single pile under tension

A simple and analytical approach is presented to analyze the load-displacement response of single pile under tension by using the load transfer method. This work can analyze the mobilization of shaft resistance up to the limiting unit skin friction and allow an estimation of the behavior of single uplift pile embedded into multilayered soils. Furthermore, the values of the parameters related to the ultimate unit shaft resistance, a key factor of this approach, are clarified based on some studies reported in literatures. The limiting unit skin friction of the pile under tension is 0.7 times that of the compression pile as suggested by this paper. Comparisons of the load-displacement response for one well-instrumented field test in multilayered soils are given to demonstrate the effectiveness and accuracy of the proposed method. This present work enables a quick estimation of the response of a single uplift pile embedded in layered soils, resulting in time saving.