The number of construction offshore wind turbines (OWTs) is gradually increasing with high clean energy demand and low technology costs. During their service life, a large number of ships will inevitably collide with OWTs, which results in collapse load acting on the OWT foundation. This paper proposes a novel fender for the OWT exposed to extreme collision using the fractal structure, as the first step toward protecting the safety of the OWT structure. The proposed the fractal structure is based by the cartesian circle, which defined by tangent circle theorem, applied to ring protection design. The paper investigates the anti-collision performance of fractal structure fender on the simulated response of the tripod OWT installed in the coastal waters by comparing tradition and fractal structure. Furthermore, the difference of external diameter and different orders are discussed under the collision actions, which are implemented in the LS-DYNA. The results show that with the increase of the order of fractal pores, structure of the first-order fractal pores is good for the fender to absorb enough collision energy and the anti-collision performance of fender increases by the greater mass.

随着对清洁能源的高需求和低技术成本，建筑海上风力涡轮机（OWT）的数量正在逐渐增加。在其使用寿命期间，大量船舶不可避免地会与OWT发生碰撞，从而导致作用在OWT基础上的坍塌荷载。本文提出了一种使用分形结构的 OWT 暴露于极端碰撞的新型挡泥板，作为保护 OWT 结构安全的第一步。提出的分形结构基于笛卡尔圆，由切圆定理定义，应用于环保护设计。通过对传统结构和分形结构的比较，研究了分形结构护舷对安装在近海水域的三角架OWT的模拟响应的抗碰撞性能。此外，在LS-DYNA中实现的碰撞动作下讨论了外径和不同阶次的差异。结果表明，随着分形孔阶数的增加，一级分形孔的结构有利于护舷吸收足够的碰撞能量，质量越大，护舷的抗碰撞性能越高。