【Key words】 early warning system; damage detection; curvature mode method; flexibility matrix method
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结果表明可以应用曲率模态法和柔度曲率法对梁类结构进行多损伤识别。
The results show that the multiple damaged locations of the beam can be diagnosed effectively by means of curvature mode and flexibility curvature.
利用冲击振动试验法可以准确得到桥墩的一阶振型和一阶频率，利用这两个参数可以构造出一阶振型比、特征参数、一阶曲率模态差三个指标。
The first-order mode and the first eigenfrequency of the pier can be obtained easily and precisely by the impact vibration test method, from which three indexes such as the chang.
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