Published in: 2nd International Conference on Acoustics and Vibration
COI code: ISAV02_051
Paper Language: English
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Authors The Assessment and Comparison of Three Square TFDs including Born-Jordan, Margenau-Hill and Rihaczek for Extraction of Dynamic Properties from Seismic Response Signals of Bridge Concrete PiersHamid Reza Ahmadi - Faculty of Civil and Environmental Engineering,Tarbiat Modares University, Al-e-Ahmad
Farhad Daneshjoo -
Abstract:A large number of time-frequency distributions have been suggested by researchers. However,their capabilities for signal processing and feature extraction are different. There is nosingle ideal time-frequency distribution for every application. The operator needs to select a distribution that most clearly reveals the information of interest for a given signal. Therefore,in this study, three well known time-frequency distributions consisting of Born-Jordan distribution,Margenau-Hill distribution and Rihaczek distribution were evaluated and assessed to extract dynamic properties from concrete piers of bridges. For this purpose, a finite-elementmodel of a concrete bridge with simple span was used. The model was excited by groundmotion records, and its responses were recorded at the piers. The response signals are processed by the TFDs and related time-frequency plans were calculated. Then, with comparison and evaluation the plans, the optimal TFD for signal processing of concrete piers of bridges under seismic loads was identified.
Keywords:square time-frequency distribution; concrete piers of bridges; seismic response signals
COI code: ISAV02_051
how to cite to this paper:If you want to refer to this article in your research, you can easily use the following in the resources and references section:
Ahmadi, Hamid Reza & Farhad Daneshjoo, 2012, The Assessment and Comparison of Three Square TFDs including Born-Jordan, Margenau-Hill and Rihaczek for Extraction of Dynamic Properties from Seismic Response Signals of Bridge Concrete Piers, 2nd International Conference on Acoustics and Vibration, تهران, دانشگاه صنعتي شريف, https://www.civilica.com/Paper-ISAV02-ISAV02_051.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Ahmadi, Hamid Reza & Farhad Daneshjoo, 2012)
Second and more: (Ahmadi & Daneshjoo, 2012)
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Type: state university
Paper No.: 25925
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