Deep Transfer Learning and Time-Frequency Characteristics-Based Identification Method for Structural Seismic Response

Frontiers in Built Environment

Wenjie Liao¹  Xingyu Chen¹  Yuli Huang²  Xinzheng Lu²  Yuan Tian² 

[1] Beijing Engineering Research Center of Steel and Concrete Composite Structures, Tsinghua University, Beijing, China;Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education, Tsinghua University, Beijing, China;

关键词: crowdsensing;    deep transfer learning;    time-frequency characteristics;    wavelet transform;    structural seismic responses;   

DOI  :  10.3389/fbuil.2021.627058

来源: DOAJ

【 摘 要 】

The cost of dedicated sensors has hampered the collection of the high-quality seismic response data required for real-time health monitoring and damage assessment. The emergence of crowdsensing technology, where a large number of mobile devices collectively share data and extract information of common interest, may help remove such obstacles and mitigate the seismic hazard. The present study proposes a crowdsensing-oriented vibration acquisition and identification method based on time–frequency characteristics and deep transfer learning. It can distinguish the responses during an earthquake event from vibration under serviceability conditions. The core classification process is performed using a combination of wavelet transforms and deep transfer networks. The latter were pre-trained using finite element models calibrated with the monitored seismic responses of the structures. The validation study confirmed the superior identification accuracy of the proposed method.

【 授权许可】

Unknown