Axial vibration of floating pile groups with flexible caps

Abstract

In this paper, a hybrid formulation is developed for the axial harmonic response of floating pile groups with flexible caps in homogeneous soil deposits. Based on pile- pile interaction factors, sub-structure method is used to form the global stiffness matrix of pile-cap-soil system, and the pile is treated as a dynamic Winkler beam. A comprehensive parameter study focuses on the influence of cap thickness and pile spacing on the dynamic response of pile groups. It can be concluded that the present method can give more reasonable and reliable prediction on the dynamics response of pile groups. © 2008 Science Press Beijing and Springer-Verlag GmbH Berlin Heidelberg Geotechnical Engineering for Disaster Mitigation and Rehabilitation.