Load utilisation (LU) ratio of monopiles supporting offshore wind turbines: Formulation and examples from European Wind Farms

Aleem, Muhammad; Bhattacharya, Subhamoy; Cui, Liang; Amani, Sadra; Salem, Abdel Rahman; Jalbi, Saleh

doi:10.1016/j.oceaneng.2022.110798

Cited by 16 publications

(4 citation statements)

References 14 publications

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“…Further, upward artesian flow due to excess pore pressure generation can result in high buoyant forces, resulting in cable floatation if not accounted for in the design. Aleem et al 27 suggest a methodology to predict the load utilization ratio of monopiles supporting OWTs for non‐liquefiable soils. This paper presents a method as an extension to adopt this method on liquefiable soils.…”

Section: Methods Of Assessing the Owt Foundation In Seismic Zonesmentioning

confidence: 99%

“…A sandy soil profile is considered in this example. The moment and lateral resisting capacity values were estimated using the methodology presented in Aleem et al 27 For the estimation of the liquefied soil the p – y springs were removed to represent the loss of the soil strength in that regions. For an accurate representation of p–y springs the readers are referred to Lombardi et al 11 or Dash et al 34 —the depth of liquefied soil presented by the removal of p–y springs.…”

Section: Methods Of Assessing the Owt Foundation In Seismic Zonesmentioning

confidence: 99%

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Hazard considerations in the vulnerability assessment of offshore wind farms in seismic zones

Bhattacharya

Amani

Prabhakaran

et al. 2022

Earthquake Engineering and Resilience

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Offshore wind power is increasingly becoming a mainstream energy source, and efforts are underway toward their construction in seismic zones. An offshore wind farm consists of generation assets (turbines) and transmission assets (substations and cables). Wind turbines are dynamically sensitive systems due to the proximity of their resonant frequency to that of loads considered in their analyses. Such farms are considered lifeline systems and need to remain operational even after large earthquakes. This study aims to discuss hazard considerations involved in the resilience assessment of offshore wind farms in seismic regions. The complexity of design increases with larger turbines installed in deeper waters, resulting in different types of foundations. In addition, Tsunami inundation is shown to be an important consideration for nearshore turbines.

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Section: Methods Of Assessing the Owt Foundation In Seismic Zonesmentioning

confidence: 99%

Section: Methods Of Assessing the Owt Foundation In Seismic Zonesmentioning

confidence: 99%

Hazard considerations in the vulnerability assessment of offshore wind farms in seismic zones

Bhattacharya

Amani

Prabhakaran

et al. 2022

Earthquake Engineering and Resilience

Self Cite

View full text Add to dashboard Cite

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“…In this type of turbine, a set of blades is attached to an axle that is parallel to the ground. As a result of strong global winds, the blades rotate, resulting in the axle spinning, generating electricity [63].…”

Section: Europe Regionmentioning

confidence: 99%

A Review of Offshore Wind and Wave Installations in Some Areas with an Eye towards Generating Economic Benefits and Offering Commercial Inspiration

Zhang

Jiang

2023

Sustainability

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Wind and wave energy have gained significant attention in recent years as high-quality renewable energy sources. Commercial applications of these technologies are still in their infancy and do not offer significant benefits to the general public due to their low economic efficiency. The main objective of this paper is to contribute to the commercialization of wind and wave energy. The first step toward achieving this goal is to review equation models related to the economic benefits of wind and wave energy. A case study approach is then used to examine several successful offshore wind and wave energy conversion devices. As a result of this examination, we identify limitations and difficulties in commercializing and developing wind and wave energy. Finally, we propose various measures to address these challenges, including technological innovation, policy support, and market regulation. Research and decision-makers interested in the promotion of renewable energy sources will gain valuable insights from this study, which will ultimately lead to the adoption of sustainable energy practices for the benefit of society and the environment.

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“…The cost of offshore wind support structures (design, construction, and installation) accounts for as much as 35% of the investment cost. The installation cost of tower support structures is 60% of the total cost for installing a whole wind turbine [2,3]. Meanwhile, foundation parts have a great role in reductions of the total cost, with the potential of being 6% less by introducing innovative monopile techniques.…”

Section: Introductionmentioning

confidence: 99%

The green spaces of the city and their significance in rehabilitation of cognitive functions – The spatial method of stimulation

Blazy,

Hrehorowicz-Gaber,

Hrehorowicz-Nowak

2024

Archives of Civil Engineering

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This paper reviews latest developments of substructures for offshore wind turbines focusing on investigations and applications of hybrid foundations. Model tests and numerical analyses were used to simulate the loading of hybrid piles in sand. The results of pile-soil interaction were investigated to confirm the changes in soil stiffness around the hybrid monopile head. The mechanism and factors affecting the change in lateral stiffness of the hybrid foundation were explained by analysing p-y curves for M+H loading conditions in sand. Based on this research, a new shape of p-y curves for hybrid monopiles was established and a method for determining key parameters was proposed. The effectiveness of new p-y curves was verified by comparing back-calculated results with those from numerical simulations. The conducted tests confirmed that the hybrid monopile displacement is 30-50% smaller when compared to a standard monopile with similar dimensions. The gained experiences can be useful for designers and researchers to enhance the design of foundations for offshore wind turbines.

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Load utilisation (LU) ratio of monopiles supporting offshore wind turbines: Formulation and examples from European Wind Farms

Cited by 16 publications

References 14 publications

Hazard considerations in the vulnerability assessment of offshore wind farms in seismic zones

Hazard considerations in the vulnerability assessment of offshore wind farms in seismic zones

A Review of Offshore Wind and Wave Installations in Some Areas with an Eye towards Generating Economic Benefits and Offering Commercial Inspiration

The green spaces of the city and their significance in rehabilitation of cognitive functions – The spatial method of stimulation

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