Calculation method for settlement of single pile considering stress dispersion of pile end soil

For the current methods can not consider the stress dispersion of pile end soil,a calculation method was presented for the settlement calculation of single pile embedded in layered soils by assuming pile end soil to be virtual soil pile which took into account the stress dispersion of pile end soil.In the elastic state,by using bilinear load transfer model to simulate the surrounding soil and using the virtual soil pile model which took into account the stress dispersion to simulate the pile end soil,a set of analytical equations for the settlement of single pile embedded in layered soils considering stress dispersion of pile end soil were obtained by virtue of the load transfer method.The effects of elastic limit displacement,elastic shear stiffness coefficient,length of virtual soil pile and cone angle on the settlement of single pile were analyzed.Comparisons of the calculation results of this method with those of the normative method and the measured data showed that the pile top settlement calculated by this presented method was approximate to the measured value,and also superior to the normative method.