Journal article
Piled rafts in overconsolidated clay: comparison of in situ measurements and numerical analyses



Publication Details
Authors:
Reul, O.; Randolph, M.
Publication year:
2003
Journal:
Géotechnique
Pages range:
301-315
Volume number:
53
Start page:
301
End page:
315
ISSN:
0016-8505

Abstract
This paper presents the results of detailed back-analysis,using three-dimensional finite-element analysis, of threepiled raft foundations on overconsolidated clay. Comparisonsof overall settlement, differential settlements and theload carried by the piles show reasonably good agreement,although the finite-element analyses generally showa higher proportion of the overall load being carried bythe piles than estimated from the field measurements.Three main performance indicators of the piled raft areproposed: the proportion of load carried by the piles,and the maximum settlement and maximum differentialsettlement, both as a proportion of the correspondingquantity for an unpiled raft foundation. The last indicator,in particular, suggests that improved layout of thepile support can lead to a reduction both in the maximumdifferential settlement and in the overall quantity ofpiles. This is illustrated for one of the case histories.


Keywords
case history, numerical modelling and analysis, piles, rafts, settlement, soil-structure interaction


Authors/Editors

Last updated on 2019-25-07 at 11:14