结构损伤初步定位的简便方法

提出将基于动态特性的检测方法与局部物理检测手段相结合的探伤思路。利用动力学方法进行实时监测及损伤区域的粗略定位,再由物理探测方法实现损伤程度和位置的精确判断,从而降低对动态检测方法的精度要求。此外,文中尝试直接由结构的动力响应信号构建能量指标识别结构损伤的方法,不需要进行模态参数识别,算法简单,有望应用于海洋平台、高层建筑等可简化为串联多自由度体系的结构的实时监测和损伤初步定位。

A Simple Method of Damage Identification for Rough Localization

Damage detection combines the detection method based on dynamic characteristics with localized experimental damage-detection methods is presented.The dynamics method is used to monitor in real time and conduct the rough localization of damage,then physical detection means is used to realize the accurate judgment of the degree and position.In addition,A damage identification index is proposed,which constructed directly on the bas is of structural dynamic response signals(displacement or velocity).The method is simple to use since modal parameter identification is not required.It can be employed for the damage identification of structures which can be simplified as lumped-mass model such as offshore platforms.