A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Scour Reduction by Collars around Offshore Monopiles
Excessive scour is a threat to the stability of monopile foundations, e.g. in offshore windparks. Particularly in shallow waters with strong tidal currents such as the North Sea, protection against excessive scouring is required. Commonly applied scour protection consists of loose rock. Little is known about alternative scour protection measures. One of the alternatives is to use a collar installed around the base of the monopile at seabed level. Indicative laboratory experiments were conducted to investigate whether collars reduce pile scouring under combined current and waves. This paper summarizes the experimental set-up, monitoring techniques, test program and results of the conducted experiments. The analysis focused on the equilibrium scour depth and the rate of scour development. The results showed that collars prevented pile scour under currents. Under extreme storm conditions scour occurred, but with a significant time delay, at a lower rate and a reduced equilibrium scour depth.
Scour Reduction by Collars around Offshore Monopiles
Excessive scour is a threat to the stability of monopile foundations, e.g. in offshore windparks. Particularly in shallow waters with strong tidal currents such as the North Sea, protection against excessive scouring is required. Commonly applied scour protection consists of loose rock. Little is known about alternative scour protection measures. One of the alternatives is to use a collar installed around the base of the monopile at seabed level. Indicative laboratory experiments were conducted to investigate whether collars reduce pile scouring under combined current and waves. This paper summarizes the experimental set-up, monitoring techniques, test program and results of the conducted experiments. The analysis focused on the equilibrium scour depth and the rate of scour development. The results showed that collars prevented pile scour under currents. Under extreme storm conditions scour occurred, but with a significant time delay, at a lower rate and a reduced equilibrium scour depth.
Scour Reduction by Collars around Offshore Monopiles
de Sonneville, B. (author) / Rudolph, D. (author) / Raaijmakers, T. C. (author)
International Conference on Scour and Erosion (ICSE-5) 2010 ; 2010 ; San Francisco, California, United States
Scour and Erosion ; 460-470
2010-10-29
Conference paper
Electronic Resource
English
Scour Reduction by Collars around Offshore Monopiles
| British Library Conference Proceedings | 2011
Scour Protection around Offshore Wind Turbines: Monopiles
| British Library Conference Proceedings | 2011
Field Performance of Scour Protection around Offshore Monopiles
| British Library Conference Proceedings | 2011
Damage Development in Scour Protections Around Offshore Monopiles
| British Library Conference Proceedings | 2007