Nonlinear analysis of pile raft foundations under eccentric loads

Authors

  • Khalid Qasim Hussein Qasim Hussein Department of Civil Engineering, College of Engineering, Duhok University, Duhok, Kurdistan Region, Iraq
  • Dr. Rafi’ M. Sulaiman Al-Ne’aimi Department of Civil Engineering, College of Engineering, Duhok University, Duhok, Kurdistan Region, Iraq

Keywords:

Finite element, Pile rafts, Constitutive model, Numerical analysis, Large moments.

Abstract

This paper discusses a series of 3D nonlinear analyses of the pile group foundation of a 34-floor multistory building subjected to vertical load and large moments using PLAXIS 3D v20 software. The soil
profile consists of seven strata of various properties, with groundwater encountered at 19.6 m below
the ground surface. The soil is modeled as hardening soil material in drained conditions. The piles in
the pile group foundation are modeled as embedded pile elements. Several parameters were
investigated through a rigorous parametric study, such as the pile spacing-diameter ratio (s/dpile), the
number of piles, and the pile slenderness ratio (l/dpile) in a square pile configuration with all piles of
equal length, on the behavior of un-piled and pile raft foundations of rectangular shape in the plan
under eccentric load. The analysis's results were thoroughly examined and discussed, and several
conclusions were presented.

Downloads

Published

2023-09-20

Issue

Vol. 13 No. 1 (2023): Polytechnic Journal vol 13 Issue 1

Section

Articles