海上风电单桩基础侧摩阻力研究  

Research on the Side Resistance in the Offshore Wind Farm Monopile Foundation

作　　者：黄申 翟恩地 许成顺[1] 胡中波 孙艳国 Huang Shen;Endi Zhai;Hu Zhong-Bo;Sun Yan-Guo(School of Civil Engineering,Beijing University of Technology,Beijing,100124;Xin Jiang Goldwind Science&Technology Co.,Ltd,100176;Chengdu Engineering Corporation Limited,Chengdu,610072)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]新疆金风科技股份有限公司,北京100176 [3]成都勘测设计研究院有限公司,四川成都610072

出　　处：《海洋技术学报》2018年第6期97-104,共8页Journal of Ocean Technology

摘　　要：单桩基础是目前应用最广泛的海上风电基础形式。现有单桩竖向承载力设计时仅考虑外侧摩阻力与端阻力,并未考虑桩基内侧摩阻力对竖向承载力的贡献。文中基于江苏某沿海海域两个风电场的现场试桩数据,分别采用API规范、美国陆军工程兵团方法以及港口工程桩基规范中的公式计算桩身外侧摩阻力,研究了土层类型、土深度对于钢管桩内外侧摩阻力比值的影响规律,并与实测数据进行了对比分析。研究结果表明:接近泥面处内外侧摩阻力比值较小,内外侧摩阻力比值随深度增加呈增大趋势;在海上风电单桩基础竖向承载力设计中,桩基内侧摩阻力不容忽视。Large diameter monopile foundation is the most widely used foundation type for offshore wind turbine.The current design methods,which specifies the ultimate vertical bearing capacity,only considers the ultimate side resistance and the base resistance,but not takes the contribution from internal side resistance into account.This paper,based on the site test pile data of two offshore wind farms in the coastal area of Jiangsu Province,uses API code,U.S.Army Corps of Engineersmethod and Pile Foundation of Harbor Engineering code to calculate the external side resistance respectively.This paper studied the influence of the soil type,depth on the side resistance ratio,and performed comparative analysis according to the measured data.The research results show that theside resistance ratio near the mudline is relatively small,and the side resistance ratio increases with depth.In the design of ultimate vertical bearing capacity towards offshore wind monopile foundation,the internal side resistance cannot be ignored.

关 键 词：海上风电 单桩基础 竖向承载力 内外侧摩阻力比 

分 类 号：TU473.1[建筑科学—结构工程]