Peak uplift resistance of offshore slender structures shallowly buried in the sloping seabed considering wave actions

Yang, Hongkuan; Guo, Zhen; Wang, Lizhong; Qi, Wen-Gang

doi:10.1016/j.apor.2022.103388

Cited by 8 publications

(6 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The section introduces the slender deep-sea pipelines, which are used to transport hydrocarbon resources, as shown in Figure 7. The subsea flowlines refer to the pipelines transporting oil and gas from the seabed wells Subsea pipelines bear fluid loads induced by currents and waves (Yang, Guo, Wang & Qi, 2022;Yang, Guo, Wang, Dou, et al, 2022). For the seabed where the pipeline movement leads to its damage, it is required that the pipeline weight should be large enough to maintain its stability under the extreme conditions.…”

Section: Deep-sea Pipelinesmentioning

confidence: 99%

See 1 more Smart Citation

Seabed structures and foundations related to deep‐sea resource development: A review based on design and research

Rui

Zhang

et al. 2023

Deep Underground Science and Engineering

View full text Add to dashboard Cite

The deep‐sea ground contains a huge amount of energy and mineral resources, for example, oil, gas, and minerals. Various infrastructures such as floating structures, seabed structures, and foundations have been developed to exploit these resources. The seabed structures and foundations can be mainly classified into three types: subsea production structures, offshore pipelines, and anchors. This study reviewed the development, installation, and operation of these infrastructures, including their structures, design, installation, marine environment loads, and applications. On this basis, the research gaps and further research directions were explored through this literature review. First, different floating structures were briefly analyzed and reviewed to introduce the design requirements of the seabed structures and foundations. Second, the subsea production structures, including subsea manifolds and their foundations, were reviewed and discussed. Third, the basic characteristics and design methods of deep‐sea pipelines, including subsea pipelines and risers, were analyzed and reviewed. Finally, the installation and bearing capacity of deep‐sea subsea anchors and seabed trench influence on the anchor were reviewed. Through the review, it was found that marine environment conditions are the key inputs for any offshore structure design. The fabrication, installation, and operation of infrastructures should carefully consider the marine loads and geological conditions. Different structures have their own mechanical problems. The fatigue and stability of pipelines mainly depend on the soil‐structure interaction. Anchor selection should consider soil types and possible trench formation. These focuses and research gaps can provide a helpful guide on further research, installation, and operation of deep‐sea structures and foundations.

show abstract

Section: Deep-sea Pipelinesmentioning

confidence: 99%

“…Subsea pipelines bear fluid loads induced by currents and waves (Yang, Guo, Wang & Qi, 2022; Yang, Guo, Wang, Dou, et al, 2022). For the seabed where the pipeline movement leads to its damage, it is required that the pipeline weight should be large enough to maintain its stability under the extreme conditions.…”

Section: Deep‐sea Pipelinesmentioning

confidence: 99%

Seabed structures and foundations related to deep‐sea resource development: A review based on design and research

Rui

Zhang

et al. 2023

Deep Underground Science and Engineering

View full text Add to dashboard Cite

show abstract

“…The conventional experimental setup related to breaking waves suggests using a slope whose width is same as that of the flume [26][27][28][29][30][31][32][33][34][35][36][37][38], which is unachievable when the currents are introduced. The width of the slope has to be smaller than that of the flume in this study, in order to not only allow the current to pass by easily, but also generate the breaking waves.…”

Section: Laboratory Experiments 21 Experimental Setupmentioning

confidence: 99%

“…Furthermore, two wave gauges (WG, model number: YWH200-D) were used to measure the wave heights with a sampling frequency of 100 Hz, while the surface velocities were measured by acoustic Doppler velocimetry (ADV, model number: Vectrino Plus) with the same frequency. The conventional experimental setup related to breaking waves suggests using a slope whose width is same as that of the flume [26][27][28][29][30][31][32][33][34][35][36][37][38], which is unachievable when the currents are introduced. The width of the slope has to be smaller than that of the flume in this study, in order to not only allow the current to pass by easily, but also generate the breaking waves.…”

Section: Laboratory Experiments 21 Experimental Setupmentioning

confidence: 99%

Influence of Currents on the Breaking Wave Forces Acting on Monopiles over an Impermeable Slope

Liu

2022

Sustainability

View full text Add to dashboard Cite

It is known that the wave breaking process is significantly affected by a current, but little attention has been paid to the effect of wave–current interaction on the breaking wave forces acting on a monopile. This study presented a total of 88 flume tests, among which solitary and regular breaking waves were generated with a following current. The waves propagated over an impermeable slope and induced impulsive loads on a vertical monopile. The moments on the monopile were measured utilizing a high-precision load cell, and the effect of current velocities on the peak moment was analyzed. Test results indicate that there was an obvious nonlinear effect between breaking waves and a following current. For solitary waves, a following current accelerated the breaking process, leading to an increase by 274.21% at maximum in breaking wave forces. However, for regular waves, both the wave heights and the reversing flow were restricted with the increasing velocity of a following current, delaying the wave breaking process; under the regular test conditions, the moment on the pile decreased by 65.25% at maximum.

show abstract

“…Duan et al [35] studied the uplift force applied by wave to a pipeline and got a relationship for the uplift force and influencing parameters using a fully coupled model considering the wave-soil-pipeline interaction. Yang et al [36] further studied the uplift resistance of soil to pipeline considering both slope and wave and proposed a formula for the wave-induced reduction in the peak uplift resistance. Pisanò et al [37] proposed a computational fluid dynamic model to predict the pipeline displacement in liquefied soil, where the large deformation and reconsolidation of soil are considered.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Wave-Induced Uplift Force onto Pipelines Buried in Sloping Seabeds

et al. 2023

View full text Add to dashboard Cite

In this paper, a two-dimensional numerical model for wave-seabed-pipeline interaction is developed to examine the wave-induced uplift force onto pipelines buried in sloping seabeds. The Reynolds-averaged Navier stokes equation and the poro-elastic equation are used to simulate the wave motion and seabed response, respectively. Meanwhile, the pipeline is considered to be elastic. Firstly, three laboratory experiments are taken to verify the effectiveness of the numerical model. Then, the effects of pipeline characteristics, soil properties and wave parameters on the nonlinear wave-induced uplift force onto a pipeline buried in a sloping seabed are analyzed. Finally, an empirical formula for predicting the nonlinear wave-induced uplift force onto buried pipelines under different slope angles is proposed. It can be found that the slope angle can greatly affect the nonlinear wave-caused pore pressure response, as well as the uplift force onto the pipeline. Moreover, the simple method for predicting the uplift force proposed in this paper can facilitate engineering applications.

show abstract

Peak uplift resistance of offshore slender structures shallowly buried in the sloping seabed considering wave actions

Cited by 8 publications

References 43 publications

Seabed structures and foundations related to deep‐sea resource development: A review based on design and research

Seabed structures and foundations related to deep‐sea resource development: A review based on design and research

Influence of Currents on the Breaking Wave Forces Acting on Monopiles over an Impermeable Slope

Nonlinear Wave-Induced Uplift Force onto Pipelines Buried in Sloping Seabeds

Contact Info

Product

Resources

About