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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。
In the structural fingerprint identification method, the damage identification method based on the flexibility method can well identify the location and extent of the damage, and based on the compliance method, the identification indexes of flexibility curvature damage and the identification indexes of the curvature matrix curvature difference damage are constructed, And it is introduced into the damage identification of transmission tower structure. Since the transmission tower has three translational components, the two damage identification indexes constructed also have three directional components, and its identification effect on the transmission tower needs to be further analyzed. Establish 51 m glass-type transmission tower model, respectively, using two indicators on the structure of different degrees of single injury and multiple injuries were identified. The results show that only the damage identification index of the vertical component of the structure can identify the structural damage, but the flexibility curvature can not be identified for the small damage location; and the curvature of the flexibility matrix can also identify the small damage location well.