基于动力参数的桥梁结构损伤识别方法研究

A Research on Bridge Structural Damage Identification Methods Based on Dynamic Parameters

结合现场试验总结了几种基于动力参数的桥梁结构损伤识别的方法,阐述了这些方法的理论识别原理,并得出了以下结论:自振频率可以确定结构已经发生了损伤,振型变化和柔度矩阵法可以确定结构损伤的位置,刚度矩阵法可以获取结构的损伤程度。

Several dynamic- parameter based methods for bridge structural damage identification are summarized in the thesis combined with field test. The identification principles of such methods are illustrated and the following results are obtained： natural vibration frequency indicates the occurrence of structural damage,changes in vibration mode and flexibility matrix approach indicates the location of the damage and the stiffness matrix tells the degree of the damage.