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Keywords: foundation
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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-20-1162
... ABSTRACT The suction bucket foundation has the advantages of simple installation and short construction cycle. This paper aims at the horizontal bearing characteristics of the suction four-bucket foundation structure, and the double-point horizontal cyclic loads model experiment under different...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1164
... ABSTRACT Offshore wind turbines located in sea ice zones are subjected to severe ice-induced vibration. The present study uses a three-dimensional pendulum tuned mass damper (3d-PTMD) to mitigate the nacelle/tower and foundation dynamic response under the combined action of wind and ice loading...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1301
... sand pile+ surcharge preloading was used to improve the soft ground. In order to know the consolidation settlement and residual settlement of the composite foundation in the transition section of the immersed tunnel, and to ensure the safety of the immersed tunnel, the settlement monitoring of the...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1178
... than 40m, due to the commercial success of HAWTs onshore (Cahay et al., 2011). However, since offshore wind farms are moving to deeper waters, floating wind turbines must be adopted to reduce the high installation cost of foundations. On the other hand, to better exploit water resources, the offshore...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2150
... ABSTRACT Consolidation settlements of a dual suction anchor (DSA) functioning as foundation structure (FST) of a pipeline end manifold (PLEM) on a soft clayey seabed during different installation and operational stages is evaluated. 3D finite element model of the DSA, including time intervals...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1194
... installation process turbine simulation study sustainable development sustainability offshore wind energy base port wind farm special vessel iju wind turbine weather condition foundation artificial intelligence renewable energy polatidis offshore wind farm offshore wind turbine installation...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1304
... ABSTRACT At present, there is no ripe experience of settlement characteristics and calculation of soft foundation in offshore immersed tube tunnel. In this paper, rebound and recompression modulus of the natural foundation of immersed tube tunnel are studied by laboratory consolidation and...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2225
... engineering requirements, and is a feasible, fast method to build a soft soil foundation for cofferdam's. INTRODUCTION Offshore cofferdams are barriers against wind and wave erosion in coastal areas. In the past few decades, the types of cofferdam have emerged in an endless stream (Wang, C, 2008; Wang, H...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2205
... ABSTRACT The foundation system for wind turbines can be a shallow concrete raft or a pile raft foundation; this depends on the loading conditions and on the sub-soil parameters. The economic design of the pile foundation depends mainly on the number of piles, pile diameter, pile arrangement...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2217
... ABSTRACT Suction caissons are frequently used on a variety of offshore structures and at present they are considered as a foundation for floating wind turbines. However, no systematic study on floating wind turbine foundations is reported for the northern region of South China Sea. To bridge...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2206
... ABSTRACT The load sharing characteristic for a typical jacket foundation offshore wind turbine (OWT) is firstly analyzed, and it is found that over 90% of the overturning moment acting on the OWT is resisted by the vertical soil resistance along the pile shaft, namely the t-z springs...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2208
... ABSTRACT Floating wind turbine is a better choice compared to monopile and jacket foundation in deep water. In fact, the reciprocating motion of floating wind turbine may lead to a trench near the mooring foundation. In this paper, a numerical method for predicting the trench evolution is...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2213
... bearing mechanism and failure mode of vibrating-mooring pile are analyzed by finite element simulation. According to the calculation, the pullout capacity of a single vibrating-mooring pile in clay foundation with a length of 3.5m can reach 450kN, which is 7.5 times than a concrete pile. BACKGROUND...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2218
... maximum 50.0 m. Here, the cyclic loading by wind and waves leads to cyclic loads acting on the foundation. At the time being, in most cases monopile foundations are applied. However, for certain subsoil conditions also a gravity base foundation might be suitable and economic. Offshore support structures...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2223
... ABSTRACT Jack-up barges are widely used to carry out construction projects in the areas of western Taiwan nearshore harbor terminals or offshore wind energy. The results show that the normalized punch-through bearing capacity affected by the jack-up barge foundation width significantly in sand...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3141
... ABSTRACT In this study, hydraulic experiments and numerical simulations were conducted for monopile-type foundations of offshore wind power generation facilities installed in shallow area to evaluate the impulsive wave force and wave run-up acting on the monopile foundation. The simulations...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3226
... deflection sustainable development wind energy frequency renewable energy diameter turbine manufacturer tower configuration wind turbine international electrotechnical commission design institute load calculation foundation turbine probability tower design Integrated Design Approach of...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2207
... Suction bucket supported jackets are being considered as foundation solutions for several offshore wind farms in China. Due to the strict serviceability requirement of the wind turbine structures, long term settlement of the bucket foundations, particularly uneven settlement, is an important...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-426
... linearly variable cross-section tower. Additionally, the concentrated spring model was introduced to simulate the flexibility of grout connection at the transition piece as well as the monopile foundation for structural modelling of an offshore wind turbine. Thus, the close-form solution of its natural...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-383
... ABSTRACT Multi-footed structures resting on suction buckets (suction caissons) comprise a promising foundation solution for next-generation 10 MW+ offshore wind turbines located in transitional water depths. For such systems, predicting the axial behavior of buckets is a critical design aspect...

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