Analysis of floating and end-bearing pile foundations affected by deep-excavations

This paper investigates the response of pile foundations to deep-excavations. An elastoplastic two-stage model is used study groups (with free- or rigidly capped-heads) and piled structures (grade beams bearing walls), considering piles embedded in either uniform layered ground. The validated using results analytical solutions, as well data from centrifuge tests real case histories. Then, a parametric excavation-induced displacements internal forces piles, deformations superstructure. Soil–pile transfer mechanisms pile–superstructure interactions are analysed for various ground conditions, with showing that settlements slopes between larger floating than end-bearing piles. Results show capped semi-flexible cause bending moments at foundation heads increase slope whereas risk tensile failure low. Also, indicate superstructure stiffness more relevant decrease deflection ratio when composed compared Finally, modelling stiff base hinged connections such may not be appropriate.