Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/15722
Title: Numerical modelling of extraction of spudcans
Authors: ZHOU XIAOXIAN
Keywords: low-order finite elements; consolidation of soils; numerical modelling and analysis; offshore engineering; soil/structure interaction; suction
Issue Date: 5-Mar-2007
Source: ZHOU XIAOXIAN (2007-03-05). Numerical modelling of extraction of spudcans. ScholarBank@NUS Repository.
Abstract: Spudcans are used extensively as foundations of mobile jack-up rigs in the offshore industry. As jack-up rigs are usually not permanent structures, they would be moved from one location to another. Therefore, spudcans need to be extracted from the sea bottom after each operation. The objectives of this research were to develop numerical models to simulate the breakout process of spudcans from the sea bottom and to get a better understanding of the problem using the numerical models developed.In this research, the hybrid and enhanced finite element methods with bi-linear interpolations for both the solid displacements and the pore fluid pressures were derived based on mixed variational principles for problems of elastic soil consolidation. Thereafter, numerical models were developed to simulate the breakout of spudcans, which may be either partially or completely penetrated into the seabed depending on the loading, seabed condition and geometric size of the spudcans.
URI: http://scholarbank.nus.edu.sg/handle/10635/15722
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