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海上风电机组的基础所处的工作环境特殊,遭受的荷载复杂。现有的基础类型均存在成本高、施工难等问题。因此,急需研究和开发成本低廉、施工简便的海上风机基础形式。本文提出了一种新型重力式海上风机基础的概念设计,基于传统的重力式基础,将预应力锚杆应用于其中,组成一种新型的基础形式:锚杆重力式海上风机基础。采用通用有限元分析软件ABAQUS对此新型基础的承载特性进行了三维有限元数值分析,探讨了锚杆重力式基础在外荷载分量的单独作用下,地基土体的承载特性和破坏机理以及锚杆的主要作用。结果表明,锚杆的存在显著地提高了地基极限承载力并改变了地基破坏形式。这说明了锚杆重力式海上风机基础具有良好的应有前景。
The foundation for an offshore wind turbine is in a special work environment and carries a complex load. The existing basic types all have the problems of high cost and difficult construction. Therefore, there is an urgent need to research and develop a basic form of offshore wind turbines that is cheap and easy to construct. This paper presents a conceptual design of a new gravity-based offshore wind turbine foundation. Based on the traditional gravity foundation, prestressed anchors are applied to form a new basic form: the foundation of the anchor gravity marine wind turbine. The common finite element analysis software ABAQUS was used to carry out the three-dimensional finite element numerical analysis of the bearing characteristics of the new foundation. The bearing capacity and failure mechanism of the foundation soil under the action of external load components were discussed. main effect. The results show that the existence of anchor rod significantly improves the ultimate bearing capacity of the foundation and changes the form of foundation failure. This shows that the foundation of the anchor gravity marine wind turbine has good due prospects.