Observed Settlements of a Piled Raft

Rasin Duzceer, Bora Okumusoglu

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Deep Foundations

ABSTRACT: This paper presents a case study for the performance of a piled raft for a high-rise office complex located in Moscow. The piling system is unique due to both been a part of the interactive piled raft and the columns of the top-down construction which enables safe and feasible erection of deep basement levels in a heavily urbanized area. The construction methodology and the design approach are summarized while the settlement of the piled-raft is discussed with graphical presentations of predicted and measured displacement values. It is worth mentioning that the direction of construction activity for the three-part complex considerably influenced the behavior of the piled raft.

RÉSUMÉ: -sols à Moscou. Les étages en-sous sols ont été construits par la méthode dite du haut en bas; méthode particulièrement efficace pour la construction des sous-sols profonds en site extrêmement urbanisé. La particularité du système de fondation consiste en ce que les pieux supportent aussi les planchers des sous-sols assurant la stabilité des diaphragmes de soutènement durant la construction des étages en sous-sols. La méthode de construction des sous-sols selon cette méthode a été décrite. La méthode de calcul du radier renforcé par pieux est décrite, les tassements phase de construction des trois tours sur le comportement du système de fondation.

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