在结构指纹识别方法中，基于柔度法的损伤识别方法能够较好地识别损伤所在位置及程度，在柔度法的基础上构建柔度曲率损伤识别指标及柔度矩阵曲率差损伤识别指标，并将其引入到输电塔结构损伤识别中。由于输电铁塔具有三个平动分量，所构建的两种损伤识别指标也具有三个方向分量，其在输电塔上的识别效果需要进一步分析。建立51 m酒杯型输电塔模型，分别采用两种指标对结构不同程度的单损伤及多损伤进行识别。研究结果表明，仅结构垂直方向分量的损伤识别指标能够识别结构损伤，但柔度曲率对于小损伤位置无法识别；柔度矩阵曲率差对小损伤位置也能较好地进行识别。%The fingerprint identification and damage identification methods based on flexibility method can be used to identify the damage location and intensity. In this paper, the flexibility curvature damage identification index and flexibility curvature difference matrix damage identification index are built based on the method of flexibility. These indexes are introduced to the damage identification of transmission tower structures. Since the transmission tower has three translational motion components and each of the two damage identification indexes also has three direction components, the recognition effect of the damage in the transmission tower needs further analysis. So, a model of 51 meter-high glass-shaped transmission tower is established, the two indexes are used to identify the single damage and multi damage of the tower structures. The results show that only using the flexibility matrix of the vertical component of the structure can identify the structure damage. Both indexes have good effect, but the flexibility curvature method is unlikely to recognize the location of small damage. While the flexibility curvature difference matrix method can identify the location of the small damages.
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