In order to mitigate the effects of local scouring around offshore wind monopile foundations on their structural safety,a new rotary scour guard is proposed.Physical model tests were carried out in the wave flow flume.The development of the scour process and scour depth around the pile were recorded under various waves,flow velocities,different installation heights and distances.A laser scanner was used to measure the topography of the scour hole.The differences in scour pit patterns under various operating conditions were analyzed to verify the scour protection effect of the device at different installation distances and heights.The results show that the new rotating scour guard has a good protective effect and the maximum scour depth around the pile can be reduced by about 44%under the present test conditions.The installation distance of the device has little influence on the erosion protection effect.The anti-scouring effect of the combined wave and current action is strongly influenced by the installation height of the equipment,which decreases as the installation height increases.
关键词
波流共同作用/冲刷防护/桩基础/冲刷深度/减冲装置
Key words
combined waves and current action/scour protection/pile foundations/scour depth/scour reduction devices
维普
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