Effect of Varying the Depth of Burial of Submarine Pipeline on Wave Forces in Well Graded and High Hydraulic Conductivity Sand

Neelamani, S.; Al-Banaa, K.

doi:10.1142/s0578563412500167

Cited by 5 publications

(1 citation statement)

References 13 publications

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“…This is because the seepage forces are very high for partially buried pipes due to the occurrence of high pressure gradients close to the seabed. Similar trends in the variation of forces with burial depth are reported in few experimental investigations such as the works carried by Neelamani et al 22 Thereafter, the analyses are performed with the consideration of the floating body and the computed forces on the pipe are overlaid in Figure 17. The increase in the forces on the buried pipe due to the floating body is evident in the considered range of burial depths.…”

Section: Resultssupporting

confidence: 68%

Wave-induced seepage force on a buried pipe in the presence of a floating structure

Kumar

Vijay

Achani

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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This work aims to understand the variations in the oscillatory seepage force on a buried pipe in the presence of a floating structure under the influence of long-crested waves. The study is based on numerical investigation carried out using Finite Element Analysis wherein the water wave is modelled using potential flow theory and the soil modelling in accordance with Biot’s consolidation equations. The investigation is carried out in the frequency domain considering a range of wave, soil and floating body parameters. At first, the sensitivity of wave and soil parameters on the development of vertical seepage force on a buried pipe is studied. Then a floating body is introduced to the fluid domain and the wave scattering effects on the seabed pressures and seepage forces on the buried pipe are investigated. The numerical results reveal that in the case of barge or floating-fixed breakwater, the increase in vertical seepage forces on the buried pipe is about two-fold in intermediate water depths (π/8 < kh < π/2). The increase in the susceptibility to instantaneous and residual liquefaction of soil above the buried pipe due to the presence of a floating body is also addressed.

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Section: Resultssupporting

confidence: 68%