Combined Finite- and Boundary-Element Analysis of the Effects of Tunneling on Single Piles
Publication: International Journal of Geomechanics
Volume 6, Issue 5
Abstract
An efficient and practical method of analysis to predict the effects of tunneling on existing single pile foundations is described. The method involves a combination of the finite- and boundary-element (FAB) methods, with free-field ground movements predicted by the finite-element method and the response of an embedded pile to these ground movements predicted by the boundary-element method. The method allows prediction of the full three-dimensional (3D) response of the pile as tunnel excavation proceeds towards the pile and away from it. Very good agreement is obtained between predictions of the pile response obtained by the FAB method and a 3D finite-element analysis which specifically includes the pile in the finite-element mesh. The vastly superior computational efficiency of the FAB method over the full 3D finite element approach is also illustrated.
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Acknowledgments
This work forms part of a research project on “The effects of tunneling on pile foundations” supported by a grant from the Australian Research Council (ARC). Some of the boundary element calculations were computed by Mr. Benjamin Mercier and his help in this regard is gratefully acknowledged.
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Information
Published In
International Journal of Geomechanics
Volume 6 • Issue 5 • September 2006
Pages: 374 - 377
Copyright
© 2006 ASCE.
History
Received: Aug 12, 2004
Accepted: Oct 28, 2005
Published online: Sep 1, 2006
Published in print: Sep 2006
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