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基于动力参数的梁结构损伤鉴定技术研究

Research on damage identification technology of beam structures based on dynamic parameters
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摘要 本文以简支梁结构为研究对象,将结构振动摄动理论作为损伤识别理论基础,推导出结构局部刚度变化对其动力特性的影响。同时,运用模式识别技术构造适宜的特征向量和模式向量,利用距离函数对结构的破坏部位和破坏程度进行识别,从而建立模式识别结构破坏的方法体系。在此基础上提出了结构一侧增加质量元解决简支梁识别位置结果不唯一的问题,并在结构数值模拟计算中验证了该方法对简支梁结构损伤鉴定的准确性。
作者 吴帅 张开银 WU Shuai;ZHANG Kai-yin
出处 《工程与建设》 2025年第4期750-752,777,共4页 Engineering and Construction
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