一种海上风机基础防冲刷结构

本实用新型提供了一种海上风机基础防冲刷结构，包括套设于桩基外侧且固定于海床面上的环状桩裙，环状桩裙包括可供桩基穿设的安装孔、由安装孔延伸至海床面的高度逐渐降低的冲刷面和设置于冲刷面与海床面连接处的缓冲面。本实用新型所提供的一种海上风机基础防冲刷结构，通过环状桩裙上设置有冲刷面和缓冲面的斜面与洋流或者潮汐所产生的海水速度变化梯度贴合，使得洋流或者潮汐到达环状桩裙上的速度基本一致，可以最大化的减弱洋流在桩基附近产生桩前漩涡，避免由于漩涡而形成的冲刷坑；本实用新型所提供的防冲刷结构，结构简单、易于加工、建造成本较低、后期维护方便，防冲刷效果好，保证桩基的承载力和风机运行的可靠性。

The utility model provides an offshore wind turbine foundation scour prevention structure which comprises an annular pile skirt arranged on the outer side of a pile foundation in a sleeving mode and fixed to a seabed surface, and the annular pile skirt comprises an installation hole allowing the pile foundation to penetrate through, a scour surface with the height gradually decreased from the installation hole to the seabed surface and a buffer surface arranged at the joint of the scour surface and the seabed surface. According to the anti-scouring structure of the offshore wind turbine foundation, provided by the utility model, the speed of ocean current or tide reaching the annular pile skirt is basically consistent by fitting the inclined plane provided with the scouring surface and thebuffer surface on the annular pile skirt with the speed change gradient of seawater generated by ocean current or tide; pre-pile vortex generated near a pile foundation by ocean current can be weakened to the maximum extent, and scour pits formed by the vortex are avoided; the anti-scouring structure is simple in structure, easy to machine, low in construction cost, convenient to maintain in thelater period and good in anti-scouring effect, and the bearing capacity of a pile foundation and the running reliability of a draught fan are guaranteed.