计算小波分布判定海洋平台结构损伤方法研究

由于海洋平台结构长期处于恶劣的海洋环境中,并受到各种载荷的交互作用,结构容易产生各种形式的损伤。因此,对海洋平台进行实时监测有着十分重要的现实意义。本文以单筒简易导管架平台为例,主要在结构损伤的判定和定位两方面对海洋平台的实时结构健康监测进行研究,结果表明通过对结构响应信号进行小波分析,小波变换系数和小波包能量分布可以很好地定义损伤识别指标。

Study on the Method of Calculating the Damage of Offshore Structures with Wavelet Distribution

Due to severe ocean environment, offshore structures are easy to be influenced or damaged by complex environmental loadings. Therefore, it is very important to implement on-line structural health monitoring for offshore structures. Take a simple jacket platform as an example, this paper presents a study on damage detection and localization of offshore structures. By wavelet analysis of structural response data, it is shown that wavelet transform coefficients and wavelet packet energy can accurately detect damage conditions.