基于结构动力特性安全性检测的发展及应用现状

工程上,关于结构动力可靠性的研究方法有多种。其中,利用模态分析的结构损伤检测方法证明结构的频率变化可以用来进行结构损伤定位。损伤的判定方法主要有预测模型的方法、基于柔度变化的损伤定位方法、基于结构动力特性的损伤检测可视化方法、基于损伤柔度曲率的新指标的方法、相邻差分曲率差值方法等。目前安全性鉴定标准大多是建立在单个构件的检测基础上的,主要检测构件的变形、损伤、材料性能等参数,直接确定结构的安全性,着重于分析构件的动力特性检测的发展现状及应用。

The development and application of safety detection based on structural dynamic characteristics

There are many studies on the structural dynamic reliability in engineering,in which the structural damage detection method by using modal analysis method to prove the frequency change of structure can be used for structural damage localization. The main method of determining damage are prediction model, damage location based on compliance changes, damage detection visualization method based on structural dynamic characteristics, new indicators based on damage flexibility curvature, adjacent differential curvature difference,and so on. Recently, the safety appraisal standards are mostly based on the detection of single component ,mainly by detecting the deformation, damage, material property, and so on parameters, which can determine the safety of the structure directly. This paper focuses on analyzing the development and application of dynamic characteristics detection in component.