一种新技术在海上风机基础冲刷防护的应用研究

  目的  随着我国海上风电开发的迅速发展，大直径单桩基础得到广泛应用，基础冲刷情况也日益严峻，选择合理适用的防冲刷方案对风电场长周期安全稳定运行、保证经济效益具有重要意义。  方法  通过某海上风电项目运行一年后大直径单管桩基础出现严重冲刷现象引出问题，对桩基础冲刷原理、目前国内外常规采取的防冲刷方案进行了概述，对某海上风电项目采用淤泥固化方案进行桩基础防冲刷试验的原理、参数、方案、工程实施进行了详述。  结果  通过对试验桩位长达两年的多次扫测、潜水员下水探摸，基本确定淤泥固化土层与桩身结合紧密、覆盖完整、试验效果良好。  结论  淤泥固化这种新型材料在海上风电基础的防冲刷应用具有一定的借鉴、推广意义。

A New Technology Research for Scour Protection of Offshore Wind Turbine Foundation

Introduction With the rapid development of offshore wind power in China, large diameter monopile foundation is be widely used. At the same time, the scour of foundation is becoming more and more serious. Therefore, to select a reasonable and suitable scour prevention scheme is of great significance for offshore wind farms' economic benefits and stable operation in the a long-term.  Method  Various scour protection methods for offshore wind farms have been presented in this paper. Scour development and various protection measures have been examined. The principles, parameters, design and construction plans of using chemically solidified sediment on an offshore wind project have been analyzed in this work.  Result  It has been shown that chemically solidified sediment improved the scour protection around tested monopile foundations at the wind farm site after two-year vessel based scanning and diver investigation.  Conclusion  Chemically solidified sediment shows great potential for scour protection at offshore wind farm sites with similar conditions.