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Three-dimensional finite element analysis of the interaction between tunneling and pile foundations

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2002
auteur(s) Mroueh Hussein; Shahrour Isam
journal (abréviation) Interrnational Journal for Numerical and Analytic Methods in Geomechanics (Int. J. Numer. Anal. Meth. Geomech.)
volume (numéro) 26 (3)
  
pages 217 – 230
résumé This paper concern analysis of the impact of construction of urban tunnels on adjacent pile foundations. It is carried out using an elastoplastic three-dimensional finite element modelling. Numerical simulations are performed in two stages, which concern, respectively, the applicaton of the pile axial loading and the construction of the tunnel in presence of the pile foundations. Analysis is carried out for both single piles and groups of piles. Results of numerical simulations show that tunneling induces significant internal forces in adjacent piles. The distribution of internal forces depends mainly on the position of the pile tip regarding the tunnel horizonal axis and the distance of the pile axis from the centre of the tunnel. Analysis of the interaction between tunneling and a group of piles reveals a positive group effect with a high reduction of the internal forces in rear piles.
mots clés elastoplastics; finite elements; free-field; group; interaction; piles; three-dimensional; tunnels; urban
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