Study on action mechanism of end bearing piles and its application

Abstract

The interaction mechanism of pile and soil for end bearing type piles is studied. A new ground-pile system model, which considers the complicity of the system and the influence of sound bearing stratum under the pile tip on stress and displacement of multilayer soil around the pile, is established by using generalized elastic theory method and mirror imagine method. A theory is given for design and calculation of end bearing pile foundation. The optimization back analysis program that employs this theory can be applied to not only the calculation of the load-settlement curves, but also the analysis of the values of geo-parameters of multilayer soil around and under piles. The method and the program are validated with engineering cases.