基于动力响应的近海结构损伤非典型参数识别方法研究综述OACSTPCD

Offshore structures are subjected to severe service environment and complex loads such as wind,wave and current for a long time,and the key structural components are easy to be damaged,so it is important to identify and locate the local and early damage.Due to the development of dynamic signal acquisition technology and the requirement of real-time damage monitoring,the damage identification method based on dynamic response has become a research hotspot.At present,there are two different approaches to structural damage identification:parametric damage identification based on the mode and its derived dynamic fingerprint,and atypical parametric methods using time series features and signal energy correlation.Due to the complexity of external excitation of offshore structures,the atypical parameter method has gradually become the most promising method for dynamic response damage identification.This paper systematically reviewed the existing atypical parameter methods for structural damage identification in offshore structures.It compared the advantages and disadvantages of various methods,summarized the challenges faced by atypical parameter,looked ahead to the development prospects of dynamic response damage identification,and provided reference for the practical application of dynamic response damage identification in engineering.