海上风机导管架基础侧向承载力特性研究

Study on the Lateral Bearing Capacity Characteristics of Offshore Wind Turbine Jacket Foundations

摘要: 海上风机在运行过程中时刻需要承受来自海洋环境的风、浪、流等外部侧向荷载，这些荷载都会传递给风机的基础结构，对其结构安全稳定性产生威胁。文章以国内学者团队开发的FssiCAS数值计算模型为平台，展开对海上风机导管架基础的侧向承载性能分析。首先对前人单桩现场试验进行模拟验证，确保FssiCAS在该方向进行分析研究的准确性和可靠性。然后在此基础上根据某设计研究院项目，按照华东勘测设计研究院提供的图纸进行1:1真实还原简易导管架模型，再依托FssiCAS数值计算模型，进行海上导管架基础在侧向荷载作用下的承载力特性研究，详细探讨分析了孔隙水和海床土质对基础侧向承载力的影响。

Abstract: Offshore wind turbines are constantly subjected to external lateral loads such as wind, waves, and currents from the marine environment during operation. These loads are transferred to the turbine’s foundation structure, posing a threat to its structural safety and stability. This paper uses the FssiCAS numerical calculation model developed domestically by a domestic research team as a platform to analyze the lateral bearing performance of offshore wind turbine jacket foundations. First, simulations are conducted to verify previous single-pile field tests, ensuring the accuracy and reliability of FssiCAS for analysis in this direction. Based on this, and according to a project from a certain design institute, a simplified jacket model is realistically restored at a 1:1 scale according to the drawings provided by East China Survey and Design Institute. Then, relying on the FssiCAS numerical calculation model, the bearing capacity characteristics of the offshore jacket foundation under lateral loads are studied, with a detailed analysis of the effects of pore water and seabed soil on the lateral bearing capacity of the foundation.