Uncertainty analysis of soil-pile interactions of monopile offshore wind turbine support structures

Yeter, Baran; Garbatov, Y.; Soares, C. Guedes

doi:10.1016/j.apor.2018.10.014

Cited by 42 publications

(19 citation statements)

References 30 publications

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“…After years of study, experimental studies, and prototypes [26,27], there are two main sorts of offshore wind structures considering the kind of platform that supports the offshore wind turbine. In this sense, platforms can be fixed (monopiles [28], tripod [29], jackets [30], gravity-based foundations [31]) or floating [32,33] (semisubmersible [34], tensioned leg platforms (TLP) [35,36], spar [37,38]). Regarding the floating concepts, the loads in the semisubmersible platform are the highest for the three floating structures [39].…”

Section: Introductionmentioning

confidence: 99%

Economic Feasibility of Floating Offshore Wind Farms in the North of Spain

Castro-Santos

Bento

Silva

et al. 2020

JMSE

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This paper assesses the economic feasibility of offshore wind farms installed in deep waters considering their internal rate of return (IRR), net present value (NPV), and levelized cost of energy (LCOE). The method proposed has three phases: geographic phase, economic phase, and restrictions phase. The purpose of the geographic step is to obtain the input values, which will be used in the economic phase. Then, the economic parameters are calculated considering the inputs provided previously. Finally, the bathymetric restriction is added to the economic maps. The case study focused on the Cantabric and North-Atlantic coasts of Spain, areas that have not been studied previously in economic terms regarding floating offshore wind technology. Moreover, several alternatives have been considered, taking into account the type of floating offshore wind structure and the electric tariff. Results indicate which is the best floating offshore wind structure with respect to LCOE, IRR, and NPV, and where is the best location for the connection of a floating offshore wind farm in the region selected.

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Section: Introductionmentioning

confidence: 99%

Economic Feasibility of Floating Offshore Wind Farms in the North of Spain

Castro-Santos

Bento

Silva

et al. 2020

JMSE

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“… Hou et al (2019a) studied the impact of uncertainty of the allowable strength in reliability assessment of aquaculture cage’s grid mooring system. These uncertain parameters were proved to be the determining factors in the reliability and service-life of renewable energy and aquaculture systems ( Yeter et al, 2019 ; Hou et al, 2018 ). As an example, Fig.…”

Section: Reliability Analysis Of the Integrated Systemmentioning

confidence: 99%

Reliability of multi-purpose offshore-facilities: Present status and future direction in Australia

Aryai

Abdussamie

Salehi

et al. 2021

Process Safety and Environmental Protection

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Sustainable use of the ocean for food and energy production is an emerging area of research in different countries around the world. This goal is pursued by the Australian aquaculture, offshore engineering and renewable energy industries, research organisations and the government through the “Blue Economy Cooperative Research Centre”. To address the challenges of offshore food and energy production, leveraging the benefits of co-location, vertical integration, infrastructure and shared services, will be enabled through the development of novel Multi-Purpose Offshore-Platforms (MPOP). The structural integrity of the designed systems when being deployed in the harsh offshore environment is one of the main challenges in developing the MPOPs. Employing structural reliability analysis methods for assessing the structural safety of the novel aquaculture-MPOPs comes with different limitations. This review aims at shedding light on these limitations and discusses the current status and future directions for structural reliability analysis of a novel aquaculture-MPOP considering Australia’s unique environment. To achieve this aim, challenges which exist at different stages of reliability assessment, from data collection and uncertainty quantification to load and structural modelling and reliability analysis implementation, are discussed. Furthermore, several solutions to these challenges are proposed based on the existing knowledge in other sectors, and particularly from the offshore oil and gas industry. Based on the identified gaps in the review process, potential areas for future research are introduced to enable a safer and more reliable operation of the MPOPs.

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“…whereas for the nonlinear soil profiles defined based on the sigmoid function can be expressed as (Yeter et al 2019):…”

Section: Site Data (Soil Profile)mentioning

confidence: 99%

Fragility analysis of an ageing monopile offshore wind turbine subjected to simultaneous wind and seismic load

Yeter

Tekgoz

Garbatov

et al. 2020

Saf. Extreme Environ.

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The loads induced as a result of seismic activities may jeopardize the serviceability of offshore wind turbines or may even lead the structure to reach the ultimate strength. The maximum load-carrying capacity of a support structure can be estimated by performing a structural assessment which accounts for the nonlinear effects arising from the material and geometry. The present work aims to analyze the fragility of a 5 MW monopile offshore wind turbine structure subjected to seismic activities accounting for soil interactions and time-variant structural degradation. The offshore wind turbine structure is subjected to different ground motions with different intensity. The nonlinear full transient dynamic structural analysis is carried out based on the finite element method, and the nonlinear monopile structural response during the different seismic activities is discussed. Finally, the fragility curves associated with the serviceability limit state design and the ultimate strength limit state are developed.

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Uncertainty analysis of soil-pile interactions of monopile offshore wind turbine support structures

Cited by 42 publications

References 30 publications

Economic Feasibility of Floating Offshore Wind Farms in the North of Spain

Economic Feasibility of Floating Offshore Wind Farms in the North of Spain

Reliability of multi-purpose offshore-facilities: Present status and future direction in Australia

Fragility analysis of an ageing monopile offshore wind turbine subjected to simultaneous wind and seismic load

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