A New Approximation for Pore Pressure Accumulation in Marine Sediment Due to Water Waves (No. R868)
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Open Access
Type
Report, ResearchAbstract
The residual mechanism of wave-induced pore water pressure accumulation in marine sediments is re-examined. Analytical approximation is derived using a linear relation fore pore pressure generation in cyclic lading, and mistakes in previous solutions (Cheng, et al., 2001. McDougal, ...
See moreThe residual mechanism of wave-induced pore water pressure accumulation in marine sediments is re-examined. Analytical approximation is derived using a linear relation fore pore pressure generation in cyclic lading, and mistakes in previous solutions (Cheng, et al., 2001. McDougal, et al., 1989) are corrected. A numerical scheme is then employed to solve the case with a non-linear relation for pore pressure generation. Both analytical and numerical solutions are verified with experimental data (Clukey, st al., 1983), and provide a better prediction of pore pressure accumulation than the previous solution (McDougal, et al., 1989). The parametric study concludes that the pore pressure accumulation and use of full non-linear relation of pore pressure become more important under the following conditions: (1) large wave amplitude, (2) longer wave period, (3) shallow water, (4) shallow soil and, (5) softer soils with a low consolidation coefficient.
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See moreThe residual mechanism of wave-induced pore water pressure accumulation in marine sediments is re-examined. Analytical approximation is derived using a linear relation fore pore pressure generation in cyclic lading, and mistakes in previous solutions (Cheng, et al., 2001. McDougal, et al., 1989) are corrected. A numerical scheme is then employed to solve the case with a non-linear relation for pore pressure generation. Both analytical and numerical solutions are verified with experimental data (Clukey, st al., 1983), and provide a better prediction of pore pressure accumulation than the previous solution (McDougal, et al., 1989). The parametric study concludes that the pore pressure accumulation and use of full non-linear relation of pore pressure become more important under the following conditions: (1) large wave amplitude, (2) longer wave period, (3) shallow water, (4) shallow soil and, (5) softer soils with a low consolidation coefficient.
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Date
2006Publisher
School of Civil Engineering, The University of SydneyLicence
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This publication may be redistributed freely in its entirety and in its original form without the consent of the copyright owner. Use of material contained in this publication in any other published works must be appropriately referenced, and, if necessary, permission sought from the author.Faculty/School
Faculty of Engineering, School of Civil EngineeringDepartment, Discipline or Centre
Centre for Advanced Structural EngineeringShare