Identification of earthquake induced structural damage based on synchroextracting transform  

作　　者：Roshan Kumar Gaurav Kumar Wei Zhao Arvind R Yadav Gang Yu Jayendra Kumar Evans Amponsah 

机构地区：[1]Department of Electronic and Information Technology,Miami College of Henan University,Henan 475004,China [2]Alliance University,Alliance College of Engineering and Design,Banglore 562106,India [3]Department of Electronics and Comm,Parul University,Vadodra 391760,India [4]School of Electrical Engineering,University of Jinan,Jinan 250022,China [5]Department of Electronics and Comm,NIT Jamshedpur,Jamshedpur 831014,India [6]Department of Civil engineering,Kwame Nkrumah University of Science and Technology,Kumasi 10959,Ghana

出　　处：《Earthquake Engineering and Engineering Vibration》2024年第2期475-487,共13页地震工程与工程振动（英文刊）

摘　　要：Several popular time-frequency techniques,including the Wigner-Ville distribution,smoothed pseudo-Wigner-Ville distribution,wavelet transform,synchrosqueezing transform,Hilbert-Huang transform,and Gabor-Wigner transform,are investigated to determine how well they can identify damage to structures.In this work,a synchroextracting transform(SET)based on the short-time Fourier transform is proposed for estimating post-earthquake structural damage.The performance of SET for artificially generated signals and actual earthquake signals is examined with existing methods.Amongst other tested techniques,SET improves frequency resolution to a great extent by lowering the influence of smearing along the time-frequency plane.Hence,interpretation and readability with the proposed method are improved,and small changes in the time-varying frequency characteristics of the damaged buildings are easily detected through the SET method.

关 键 词：CROSS-TERM damage detection earthquake signal synchroextracting transform TIME-FREQUENCY 

分 类 号：TU311.3[建筑科学—结构工程]