+91 9538798040
Bookmark and Share
 





EFFECT OF DIFFERENT PARAMETERS ON THE BEHAVIOR OF UNIFORMLY LOADED PILED RAFTS


Basuony El-Garhy
Page No. 13-35


Abstract

This paper presents a nonlinear computer program called PILEDRAFT to analyze piled rafts
embedded in different soil profiles. The analysis method is based on the hybrid finite element-elastic
continuum-load transfer method. The method of hybrid developed here extended to take into
account the nonlinear behavior of the soil beneath the raft, nonlinear pile load-settlement
behaviour, nonhomogeneous soil profile, multilayered soils and piles of different diameters, lengths
and stiffness. Compared with results of the available published literatures, the developed program
provides reasonable results. The program PILEDRAFT is used in a parametric study to investigate
the effect of different parameters on the performance of a uniformly loaded piled raft. The study
shows that the piles configuration beneath the raft has a profound effect on the overall and
differential settlements and the bending moment of the raft. The reduction in the area occupied by
the piles beneath the central area of the raft can reduce the overall and differential settlements and
increase the induced bending moments of the raft. Moreover, the effects of the raft thickness,
modulus of elasticity of the supporting soil and length of the piles on the behavior of piled raft are
investigated. The results of this study may provide general guidelines for practical engineers to
produce economical design of piled rafts.
Keywords: Piled rafts, piles configurations, nonhomogenous soil, multilayered soil, parametric
study


Download complete article in pdf format