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Keywords: monopile
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Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1160
... ABSTRACT This paper presents results of a hydrodynamic model test of a monopile modeling the NREL 5 MW offshore wind turbine. This paper mainly introduces the test process of the monopile offshore wind turbine under the action of shallow water breaking waves and provides an analysis of the...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1192
... and mating of the tower stabbing cone with the preinstalled foundation. This installation approach is an analogy to the float-over deck installation method for the offshore platforms. A case study of offshore wind turbine installation onto a pre-installed monopile foundation by the new installation...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2216
... ABSTRACT In this study, an unresolved CFD-DEM was used to investigate a fluid flow and a behavior of sediment particles around a monopile. In order to consider the interaction between particles on the seabed and a current, an improved CFD-DEM solver was implemented within the OpenFOAM framework...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3127
... monopiles in relatively shallow waters. The typical Keulegan-Carpenter ( KC ) number for offshore wind turbine monopiles implies that inertia loading will dominate and viscous drag forces can be neglected. For non-breaking waves the dominant load will be at the same frequency as the incoming waves and can...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-286
... ABSTRACT Offshore wind power has a huge potential growth as a kind of renewable energy. Today one of the most common concepts for wind turbine foundations is the very large-diameter monopile. The conventional method for assessment of steel-pipe pile lateral performance is the application of p...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-341
... this study, flow and scour around a monopile foundation exposed to a current were investigated by using the computational fluid dynamics (CFD) and discrete element method (DEM) coupling method. The open source computation fluid dynamics library, OpenFOAM, and a sediment transport library were coupled...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-172
... differences between the models, focusing on the effect on the total fatigue experimented by the rotor on a reduced load matrix. A monopile for a 13.2 MW rotor was designed in the stiff-soft region and fully aeroservo-elastic simulations were run using the aero-servo-hydro-elastic tool 3DFloat. Results show...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-095
... stiffness shear stress-shear strain relation monopile dynamic load earthquake engineering liquefaction dynamic analysis earthquake engineering loading triaxial test boundary condition foundation relation excess pore pressure upstream oil & gas displacement reservoir...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-166
...Evaluation of un- and reloading stiffness and damping of monopile foundations in non-cohesive soils Jann-Eike Saathoff, Klaus Thieken, Martin Achmus Institute for Geotechnical Engineering, Leibniz Universität Hannover Hannover, Germany ABSTRACT The foundation stiffness under operational loads is a...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-498
... remediation geometry offshore energy structure sustainability monopile grouted connection sustainable development loading grouted joint shear key failure pattern land reclamation peak load social responsibility renewable energy technical report displacement specimen clamp...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-534
... ABSTRACT The ice loading process has a clear stochastic nature due to variations in the ice conditions and in the ice-structure interaction processes of offshore wind turbine. In this paper, a numerical method was applied to simulate a monopile fixed-bottom and a spar-type floating wind...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-006
... ABSTRACT In this work, advanced reliability assessment of OWT (offshore wind turbine) monopiles is proposed by combining reliability analysis method and SHM (structural health monitoring) / CM (condition monitoring) technology. A 3D (three-dimensional) parametric FEA (finite element analysis...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-106
... The Effect of Wave Action on the Lateral Pile-Soil Interaction for Monopiles in Sandy Seabed Ting Huang1,2, Shunya Bai1, Lijun Hou1, Zhongyuan Guo1 1College of Harbor, Coastal and Offshore Engineering, Hohai University Nanjing, Jiangsu, China 2Guangxi Key Laboratory of Geomechanics and...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-675
... constitutive formulations for the grout, mesh density, and steel/grout interaction are confronted. KEY WORDS: Wind turbine; offshore technology; grouted connection; high performance concrete; monopile; finite element analysis. INTRODUCTION Until lately the foundation pile of most wind turbine (WT) structures...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-066
.... Furthermore, we also consider multiple solutions to achieve a desire pose and study how to choose an optimal one. Finally, we validate the inverse kinematics by applying it to monopile installation simulation using two floating cranes. INTRODUCTION Background A floating crane is almost essential for...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-219
... ABSTRACT Due to the lateral stiffness shortage of the monopile, and in order to improve the applicability of the monopile, a new wind turbine foundation type which is combining the jacket and monopile foundations is proposed. Based on the engineering example of offshore wind farm in Fujian...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-211
... ABSTRACT Offshore wind farms are regarded to be an important source of clear energy in recent years. The majority of offshore wind turbines (both current and planned) are founded on monopiles, they are open-ended steel pipe piles with diameters from 2.0 m to 8.0 m, which have soil coring...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-300
... ABSTRACT Two common offshore wind turbine structures, the monopile type and the jacket type, subjected to ocean wave load were analyzed using finite element simulations. The FEM models were built in ABAQUS, and applied the load combinations consisting of the structural weight, the weight of...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-282
... monopile mooring arrangement is successfully tested to reduce FSO motions and withstand the loads from the landslide tsunami events. The challenges associated with applying typical linearized deep-water motion response models in shallow-water are discussed. KEY WORDS: Landslide; Tsunami; FSO; Moorings...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-466
... ABSTRACT The load-bearing behavior of laterally loaded piles in soft clay is commonly determined by using the p-y method as recommended by the American Petroleum Institute (API). The recent application of these p-y curves for monopile foundations of offshore wind turbines necessitates their...

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