Health monitoring of interlocking reinforced concrete columns under seismic excitation (1)

Objective: To further verify the effectiveness of the proposed piezoceramic-based approach for the structural health monitoring of reinforced interlocking concrete columns subjected to shake table excitations.
Experimental setup: reinforced concrete (RC) interlocking column, shake table, dSpace data acquisition system
Method: Smart aggregate-based health monitoring approach, wavelet packet analysis
Conclusion: The structural health monitoring results show that transmitted wave attenuated at different frequency ranges and the attenuation level is proportional to the damage severity. An attenuation matrix is developed based on the frequency responses of wave propagation. From the experimental results, it is shown that the high frequency signals are sensitive in detecting damages and extracting damage features. These results can be observed in the project analysis section.

目的：进一步验证所提出的基于压电陶瓷的方法在振动台激励下钢筋联锁混凝土柱结构健康监测（structural health monitoring）中的有效性。
实验装置：钢筋混凝土（RC）联锁柱、振动台、dSpace数据采集系统
方法：基于智能骨料的健康监测方法、小波包分析
结论：结构健康监测结果显示，透射波在不同频率范围内发生衰减，且衰减程度与损伤程度（damage severity）成正比。基于波传播的频率响应构建了衰减矩阵。实验结果表明，高频信号在损伤检测与损伤特征提取方面具有敏感性，这些结果可在项目分析部分中观察到。