Behaviour of pile above tunnel in clay

Abstract

Centrifuge model study was carried out to investigate the effects of tunnelling beneath piled foundation in soft clay. Tests were performed on a single pile with its toe at three meters above the tunnel crown and located at various distances from the tunnel centre line. The induced pile axial load transfer and bending moment profiles due to tunneling are examined in this paper. It was found that the induced axial load transfer due to tunnelling changes considerably for a pile located directly above tunnel crown, at tunnel edge and at two tunnel diameters away from the tunnel centre line. © 2014 Taylor & Francis Group.