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Title: Pile behaviour subject to excavation-induced soil movement in clay
Keywords: Centrifuge model, Bending moment, Free-field soil movement, Soil flow, Limiting soil pressure, Time dependent behaviour
Issue Date: 21-Apr-2005
Citation: ONG EK LEONG, DOMINIC (2005-04-21). Pile behaviour subject to excavation-induced soil movement in clay. ScholarBank@NUS Repository.
Abstract: Centrifuge model tests have been conducted to investigate the effects of excavation-induced soil movements on piles behind stable and collapsed walls in clay. It is found that behind a stable wall, the induced maximum bending moment and deflection continue to increase after excavation. As the number of piles in a group increases, the induced bending moments on the piles would reduce. It is also observed that by capping a pile group, the pile group deflection is smaller but significant negative bending moment develops along the upper pile shaft. There is also strong interaction between the rear piles and the front piles via the connecting pile cap. A numerical model is employed to back analyze the experimental data. The model provides a fair prediction of the general trend of the induced pile bending moment, shear force, deflection and soil pressure profiles if appropriate parameters and limiting soil pressures are used.
Appears in Collections:Ph.D Theses (Open)

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