Journal Published Online: 23 April 2018
Volume 41, Issue 4

Effects of Pile Installation Simulation on Behavior of Pile Groups in Centrifuge Model Tests

CODEN: GTJODJ

Abstract

Centrifuge model testing plays an important role in investigations of the bearing behavior of pile groups and its underlying mechanisms, for which pile installation simulation is a key issue. Centrifuge model tests were conducted to analyze the effect of different pile installation simulation methods, namely traditional installation at 1 g and in-flight installation at 50 g. Compared to the traditional method, the in-flight pile installation induces two effects: the deformation effect, in which the neighboring soil is made denser, and the shielding effect, in which the existing piles influence the deformation and pore pressure of the neighboring soil. Thus, the limit-bearing capacity and corresponding settlement of the pile group using the in-flight pile installation method are significantly greater, and the deformation and excess pore pressure of the soil near piles are smaller. The traditional pile installation method obtains unrealistic responses of pile groups because it cannot adequately simulate these effects.

Author Information

Li, Yang
State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, People’s Republic of China
Zhang, Ga
State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, People’s Republic of China
Liu, Chunying
School of Civil Engineering, Tongji University, Shanghai, People’s Republic of China
Pages: 6
Price: $25.00
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Details
Stock #: GTJ20160221
ISSN: 0149-6115
DOI: 10.1520/GTJ20160221