3D-Continuum Numerical Analysis of Offshore Driven Pipe Pile Using Finite Difference Method
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This paper presents the results from three-dimensional analysis of offshore driven pipe piles using FLAC3D (Fast Lagrangian Analysis of Continua in three Dimensions) program. The numerical model was developed with solid elements for both the pile and the surrounding soil. Interfaces are created both on the inside and outside surfaces of the pipe pile along the length as well as at the bottom of the annular area of the pile. The pile driving was simulated by giving hammer impact force of one blow which was measured during offshore pile installation. Parametric studies were performed with different soil properties until the signals from the numerical analyses matched with the measured force–velocity data of the pile installed in offshore South East Asia region. The results include the soil plug behaviour under continuous driving and with a delay time of 12 h.
KeywordsPile driving Numerical analysis Soil plug FLAC3D Interface surfaces
The authors wish to thank M/s Somehsa Geosciences Pte. Ltd. for providing the field test data.
- 1.Bowles JE (1996) Foundation analysis and design. McGraw-HillGoogle Scholar
- 2.FLAC3D v6.00 Manual (2017) Fast lagrangian analysis of continua, Itasca Consulting Group Inc., USAGoogle Scholar
- 5.Pinto PL, Grazina JC (2008) Evaluation of 1D and 2D numerical modelling techniques of dynamic pile testing. In: Proceedings of the 8th international conference on the application of the stress-wave theory to piles, Lisbon, Portugal, Sept 8–10Google Scholar
- 6.Smith EAL (1960) Pile-driving analysis by the wave equation. J Soil Mech Found Div 86(EM 4):35–61Google Scholar