Structural Dynamic Response Compressing Technique in Bridges using a Cochlea-inspired Artificial Filter Bank(CAFB)

13th International Conference on Motion and Vibration Control; 12th International Conference on Recent Advances in Structural Dynamics

Heo, G.^1 ; Jeon, J.^1 ; Son, B.^1 ; Kim, C.^2 ; Jeon, S.^2 ; Lee, C.^2

Department of Civil Engineering, Konyang University, 121 Daehangro, Nonsan, Chungcheongnam-do, Korea, Republic of^1

Department of Civil Engineering, Chungnam National University, 99 Daehangno, Daejeon, Korea, Republic of^2

关键词: Artificial filter;    Centro earthquake;    Construction research;    Optimizing algorithm;    Real-time dynamics;    Response measurement;    Software implementation;    Structural management system;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/744/1/012058/pdf
DOI  :  10.1088/1742-6596/744/1/012058

来源: IOP

【 摘 要 】

In this study, a cochlea-inspired artificial filter bank (CAFB) was developed to efficiently obtain dynamic response of a structure, and a dynamic response measurement of a cable-stayed bridge model was also carried out to evaluate the performance of the developed CAFB. The developed CAFB used a band-pass filter optimizing algorithm (BOA) and peakpicking algorithm (PPA) to select and compress dynamic response signal containing the modal information which was significant enough. The CAFB was then optimized about the El-Centro earthquake wave which was often used in the construction research, and the software implementation of CAFB was finally embedded in the unified structural management system (USMS). For the evaluation of the developed CAFB, a real time dynamic response experiment was performed on a cable-stayed bridge model, and the response of the cable-stayed bridge model was measured using both the traditional wired system and the developed CAFB-based USMS. The experiment results showed that the compressed dynamic response acquired by the CAFB-based USMS matched significantly with that of the traditional wired system while still carrying sufficient modal information of the cable-stayed bridge.