Wave‐Current Coupling Effects on the Variation Modes of Pore Pressure Response in a Sandy Seabed: Physical Modeling and Explicit Approximations

Yang, Lijing; Qi, Wengang; Li, Yuzhu; Gao, Fu‐Ping

doi:10.1029/2022jc019158

Cited by 6 publications

(5 citation statements)

References 50 publications

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“…Two wave-induced seabed liquefaction mechanisms, namely oscillatory and residual, have been reported in the literature [3][4][5]. The former is caused by oscillatory or transient excess pore pressures with phase lag and amplitude attenuation [6][7][8][9][10][11][12], while the latter is the result of the build-up of excess pore pressures due to soil contraction under cyclic loading [4,13]. This study considers both mechanisms.…”

Section: Introductionmentioning

confidence: 98%

Integrated Model for Wave-Induced Oscillatory and Residual Soil Response in a Poro-Elastic Seabed: Partially Dynamic Model

Wan

Cui

Jeng

2023

JMSE

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The evaluation of wave-induced residual pore pressure in a porous seabed and associated seabed liquefaction is essential for designing marine infrastructure foundations. The strength and stiffness of the seabed could be weakened due to the build-up of pore pressures under cyclic wave action, further leading to residual liquefaction. Existing models for residual liquefaction are limited to the quasi-static uncoupled approaches, which do not account for the effect of oscillatory pore pressure on the accumulative pore pressure acceleration of solid particles, despite the mutual influence of these two mechanisms. To overcome these limitations, this paper proposes a new model for residual soil response with u−p approximation (partial dynamic model) that couples oscillatory and residual mechanisms. The proposed model is validated through wave flume tests and centrifuge tests. Based on the coupling model, a new criterion of liquefaction integrating both oscillatory and residual mechanisms is also proposed. Numerical examples demonstrate that the coupling effect significantly affects the wave-induced seabed liquefaction potential. Furthermore, a new parameter (Ω) representing the ratio of oscillatory and residual pore pressure is introduced to clarify which mechanism dominates the pore pressure development.

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Section: Introductionmentioning

confidence: 98%

Integrated Model for Wave-Induced Oscillatory and Residual Soil Response in a Poro-Elastic Seabed: Partially Dynamic Model

Wan

Cui

Jeng

2023

JMSE

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“…At present, many scholars study the effects of currents on the seabed dynamic response. [15][16][17][18][19][20] Qi et al 16 used a specially designed flume to experimentally simulate the excess pore pressure on a sandy seabed induced by a combination of waves and currents. Qi et al 17 considered the stratification of the seabed and the nonlinear interaction of waves and currents, and provided an in-depth study of the dynamic response of a multilayered seabed under the combined action of waves and currents.…”

Section: Introductionmentioning

confidence: 99%

“…Chen et al 15 investigated the effect of current characteristics and backfilling conditions on the dynamic response around the submarine pipeline. Yang et al 18 investigated the effect of wave-current coupling on the change pattern of pore pressure response of sandy seabed. Similarly, coastal zones are mostly sloping terrains, and the slope characteristics of the seabed are still worth studying.…”

Section: Introductionmentioning

confidence: 99%

“…The effect of currents, a common factor in the marine environment, is often ignored in the study of dynamic loads on the seabed. At present, many scholars study the effects of currents on the seabed dynamic response 15–20 . Qi et al 16 .…”

Section: Introductionmentioning

confidence: 99%

“…investigated the effect of current characteristics and backfilling conditions on the dynamic response around the submarine pipeline. Yang et al 18 . investigated the effect of wave‐current coupling on the change pattern of pore pressure response of sandy seabed.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanical response of shield tunnel lining under nonlinear wave and current action in sloping seabed

Zhang,

Han,

et al. 2023

Num Anal Meth Geomechanics

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With the increasing demand for transportation construction in coastal areas, tunnel safety research is becoming increasingly important. Previous studies take less account of the nonlinear wave and current action under the sloping seabed terrain. Furthermore, there are few researches on the additional deformation of shield tunnel lining caused by wave‐current dynamic pressure. In this paper, according to the interaction theory of Stokes third‐order nonlinear wave and uniform current and Biot's dynamic consolidation equation, the excess pore pressure response of sloping pure seabed under the wave‐current action is obtained. The excess pore pressure reflected by the tunnel is acquired using the seepage continuity condition on the permeable lining surface. Considering the residual excess pore pressure caused by the cumulative effect under the cyclic action of seepage force. Then the distribution law of seepage pore pressure around the shield tunnel in the sloping seabed under the wave‐current action is obtained based on the superposition principle. The displacement response of tunnel lining during the long‐term service period is obtained by combining the exponential decay model. Moreover, the accuracy of theoretical analysis is verified by experimental monitoring data and numerical simulation, and the hydraulic parameters, seabed parameters and tunnel parameters are analyzed.

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Analytical solution for seepage pressure of multilayered sand seabed considering interaction between wave-current action and shield tunnel

Zhang,

Chen,

Han

et al. 2024

Computers and Geotechnics

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Wave‐Current Coupling Effects on the Variation Modes of Pore Pressure Response in a Sandy Seabed: Physical Modeling and Explicit Approximations

Cited by 6 publications

References 50 publications

Integrated Model for Wave-Induced Oscillatory and Residual Soil Response in a Poro-Elastic Seabed: Partially Dynamic Model

Integrated Model for Wave-Induced Oscillatory and Residual Soil Response in a Poro-Elastic Seabed: Partially Dynamic Model

Mechanical response of shield tunnel lining under nonlinear wave and current action in sloping seabed

Analytical solution for seepage pressure of multilayered sand seabed considering interaction between wave-current action and shield tunnel

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