Abstract

FIGUEREDO SOSA, Serguey; COBELO CRISTIA, Willian  and  FERNANDEZ LORENZO, Ingrid. 3D numerical analysis of composite piled-raft foundation. Rev. Téc. Ing. Univ. Zulia [online]. 2014, vol.37, n.2, pp.116-124. ISSN 0254-0770.

The piled-raft foundation is one of the major advances in foundation engineering in the last decades. It use has been increased in the last years up to become a common solution to solve large structure foundations. This foundation system has been widely accepted by its efficiency on settlement reduction and favorable economic effect compared to conventional solutions. The aim of this article is to show the behavior of the combined piled-raft foundation taking into account the interaction between its three main elements: raft, soil and pile. The assessment of variation on the length, diameter and spacing of the piles on admissible load capacity is presented. Furthermore their influence on settlement reduction under axial load is referred to. Finally a study of load transfer from superstructure to the soil is performed through a computational numerical experiment developed by using PLAXIS 3D Foundation based on finite element method.

Keywords : piled raft foundation; raft-pile-soil interaction; PLAXIS.

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