海上风机吸力式桶形基础承载特性研究综述

A Review on the Bearing Capacity Studies of the Suction Bucket Foundation for Offshore Wind Turbines

风机基础作为海上风机整体结构的重要组成部分,承受着上部风机所受到的风浪流荷载,并且对风机的安全性及可靠性至关重要。吸力式桶形基础由于其安装简单和可重复利用等优点,在海洋平台基础中得到了广泛应用,并逐步应用于海上风机基础中。但由于海上风机与海洋平台在海洋环境中的荷载工况有一定的差别,仍需要通过对其承载特性研究现状进行全面认识,以实现吸力式桶形基础在海上风机基础中的可靠应用。文中通过总结和评价现有研究对桶形基础在不同土体条件以及荷载条件下进行试验及数值模拟分析得到的研究结果,综述了静荷载和循环荷载作用下砂土和黏土中的吸力式桶形基础的承载特性研究现状,以及海上风机吸力式桶形基础的相关研究。文章展望了目前应用于海上风机基础的桶形基础仍缺乏的研究,为海上风机吸力式桶形基础的可靠应用及后续研究提供重要参考。

As an important part of the overall structure of the offshore wind turbine,the wind turbine foundation is subject to the wind and wave loading on the wind turbine structure.The foundation is thus essential for the safety and reliability of the wind turbine.The suction bucket foundation has been widely used in the offshore platform foundation as a result of its simple installation and reusability,and has been gradually applied to offshore wind turbine foundations.However,because of the difference in load conditions between offshore wind turbines and offshore platforms in the marine environment,it is necessary to comprehensively understand the research on the bearing capacities on the foundation.In this paper,the experimental and numerical studies and research results on the suction bucket foundation with different soil conditions and load conditions are systematically summarized and evaluated.Studies on the bearing capacity of suction bucket foundations in sand and clay under static and cyclic loads are mainly discussed and the required future research on the suction bucket foundation for offshore wind turbine is also proposed.This review on the research status and the prediction on future work provide an important reference for the future research on the suction bucket foundation for offshore wind turbines.