Abstract

In this article, a dynamic analysis of an offshore wind turbine (OWT) considering soil structure interaction (SSI) is performed. The design of these highly expensive structures tends to find the best compromise between cost and safety. To do so, a coupling between reliability-based design optimization and the numerical model of the OWT is required. An extension of some RBDO methods such as the optimum safety factor, hybrid method, and the robust hybrid method in the case of an OWT considering SSI is then proposed. Results show that these techniques lead to an optimal configuration in the unsafe zone. For this, a modified hybrid method (MHM) is developed in order to overcome the drawback of the other methods. By comparing it results to the classical ones, the advantages and the efficiency of the MHM is then presented.

摘要

在本文中，对考虑土壤结构相互作用 (SSI) 的海上风力涡轮机 (OWT) 进行了动态分析。这些非常昂贵的结构的设计往往会在成本和安全性之间找到最佳折衷。为此，需要基于可靠性的设计优化与 OWT 的数值模型之间的耦合。然后提出了在考虑 SSI 的 OWT 的情况下优化安全系数、混合方法和鲁棒混合方法等一些 RBDO 方法的扩展。结果表明，这些技术可以在不安全区域中实现最佳配置。为此，开发了一种改进的混合方法 (MHM)，以克服其他方法的缺点。通过将其结果与经典结果进行比较，然后介绍了 MHM 的优势和效率。