Wave-Induced Dynamic Response and Liquefaction of Transversely Isotropic Seabed

Wang, Guo‐Cai; Chen, Shengli; Liu, Congcong; Shao, Kang; Liu, Qianqian

doi:10.1061/(asce)gm.1943-5622.0001570

“…However, most of the above investigations considered the behavior of porous seabed governed by consolidation theory 19 and storage equation 20 . In the analysis, the effects of both inertia terms of soil and of fluid on the dynamic response of seabed were ignored, which might give inaccurate prediction under certain conditions of wave-seabed system 2,[21][22][23][24][25] . Considering the influence of inertia terms of both fluid and solid on the dynamic response of ocean sediments, Jeng et al (1999) discussed the applicable range of fully coupled dynamic model and quasi-static approximations 22 .…”

Section: Introductionmentioning

confidence: 99%

“…Yang and Ye (2018) investigated the residual liquefaction susceptibility induced by standing waves in a loosely ocean sediment using validated integrated numerical model 4 . Wang et al (2018Wang et al ( , 2020 proposed an analytical method to reveal the dynamic response and liquefaction of a poroelastic seabed subjected to progressive ocean waves using Biot's fully coupled theory [24][25] .…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response and Liquefaction Potential of Porous Seabed Induced by Partial Standing Ocean Waves

Wang,

Liu,

Liu

et al. 2023

Preprint

Self Cite

0

View full text Add to dashboard Cite

The analysis of ocean wave-induced dynamic response of a porous seabed is particularly important for coastal and geotechnical engineers when designing and constructing maritime structures. In this study, an analytical solution is presented to analyze the dynamic response and liquefaction potential of a poro-elastic seabed induced by partial standing waves with arbitrary reflectivity. The porous seabed is modeled using Biot’s theory describing the propagation of elastic waves, and coupled deformation and water flow of porous media, whereas the ocean waves are described using linear ocean wave theory. Based on the mixed boundary-value conditions, explicit expressions of displacements, effective stresses and excess pore water pressure of seabed are derived with consideration of the effects of inertial forces, compressibility of solid and fluid, and arbitrary reflectivity of standing waves. The results of degenerated analytical solutions are compared with the existing ones to verify the correctness of the proposed method. The effects of several pertinent parameters of ocean wave-seabed system, including reflection coefficient, phase lag and period of standing waves, depth of water, permeability, degree of saturation, and shear modulus of seabed deposits, etc., on the dynamic response of seabed and liquefaction potential, are examined and discussed.

show abstract

“…Ulker et al 12,13 summarized the results of previous studies and investigated the wave-induced dynamic response of the seabed based on three models respectively, and analyzed the differences between the three models. Wang et al 14 analyzed the dynamic response and transient liquefaction of a transversely isotropic seabed subjected to water waves using the full dynamic model. In this paper, the full dynamic model which considers the acceleration of the soil skeleton and pore fluid is used to investigate the effect of the inertial term on the dynamic response of the seabed.…”

Section: Introductionmentioning

confidence: 99%

“…summarized the results of previous studies and investigated the wave‐induced dynamic response of the seabed based on three models respectively, and analyzed the differences between the three models. Wang et al 14 . analyzed the dynamic response and transient liquefaction of a transversely isotropic seabed subjected to water waves using the full dynamic model.…”

Section: Introductionmentioning

confidence: 99%

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

Zhang,

Han,

Lv

et al. 2023

Num Anal Meth Geomechanics

1

0

View full text Add to dashboard Cite

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.

show abstract

“…However, most of the above investigations considered the behavior of porous seabed governed by consolidation theory 19 and storage equation 20 . In the analysis, the effects of both inertia terms of soil and of fluid on the dynamic response of seabed were ignored, which might give inaccurate prediction under certain conditions of wave-seabed system 2,[21][22][23][24][25] . Considering the influence of inertia terms of both fluid and solid on the dynamic response of ocean sediments, Jeng et al discussed the applicable range of fully coupled dynamic model and quasistatic approximations 22 .…”

mentioning

confidence: 99%

Dynamic response and liquefaction potential of porous seabed induced by partial standing ocean waves

Wang,

Liu,

Liu

et al. 2023

Sci Rep

Self Cite

1

0

View full text Add to dashboard Cite

The analysis of ocean wave-induced dynamic response of a porous seabed is particularly important for coastal and geotechnical engineers when designing and constructing maritime structures. In this study, an analytical solution is presented to analyze the dynamic response and liquefaction potential of a poro-elastic seabed induced by partial standing waves with arbitrary reflectivity. The porous seabed is modeled using Biot’s theory describing the propagation of elastic waves, and coupled deformation and water flow of porous media, whereas the ocean waves are described using linear ocean wave theory. Based on the mixed boundary-value conditions, explicit expressions of displacements, effective stresses and excess pore water pressure of seabed are derived with consideration of the effects of inertial forces, compressibility of solid and fluid, and arbitrary reflectivity of standing waves. The results of degenerated analytical solutions are compared with the existing ones to verify the correctness of the proposed method. The effects of several pertinent parameters of ocean wave-seabed system, including reflection coefficient, phase lag and period of standing waves, depth of water, permeability, degree of saturation, and shear modulus of seabed deposits, etc., on the dynamic response of seabed and liquefaction potential, are examined and discussed. It is found that the reflection of standing wave has a significant effect on the dynamic response and liquefaction potential of porous elastic seabed. Compared with that of no wave reflection, the liquefaction depth of seabed induced by fully-reflected standing waves increases 82.49% under certain conditions of wave-seabed system. In addition, phase lag, wave period, water depth and mechanical and physical properties of seabed soil such as saturation, permeability and shear modulus have different effects on the dynamic response and liquefaction potential of porous elastic seabed. The investigation of the dynamic response and liquefaction of the porous elastic seabed under partial standing ocean waves will help to better predict the influence of standing waves on breakwaters and seabed soil, and can provide some guidance for the design of offshore structures.

show abstract

Wave-Induced Dynamic Response and Liquefaction of Transversely Isotropic Seabed

Cited by 8 publications

References 46 publications

Dynamic Response and Liquefaction Potential of Porous Seabed Induced by Partial Standing Ocean Waves

Dynamic Response and Liquefaction Potential of Porous Seabed Induced by Partial Standing Ocean Waves

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

Dynamic response and liquefaction potential of porous seabed induced by partial standing ocean waves

Contact Info

Product

Resources

About