Location
Arlington, Virginia
Date
16 Aug 2008, 8:45am - 12:30pm
Abstract
Blasting test studies have one drawback with regard to earthquake studies; they are concerned with vibrations of much smaller amplitude than those normally encountered in earthquakes. Consequently, blasting studies can be used to calibrate dam behavior in a linear elastic range. Accuracy of numerical models should be improved by full scale tests and in situ earthquake records. In this research, first of all a short review of different classical and modern signal processing methods is presented. As it is known, classical signal processing methods, such as FFT and PSD, have many limitations in non- stationary random vibration analysis. Blasting records are known to be one of the non – stationary signals in both intensity and frequency content. Blasting test records of Masjed Soleyman, the highest embankment dam in Iran, are processed in time – frequency domain by classical and TFD method. TFD method leads to better and more accurate system identification based on real available records in earth dam. Using this powerful and modern signal processing technique, frequency contents of blasting spectra are conducted and processing of the signal in both time and frequency domain can be performed. Also obtained results based on classical and TFD method are compared with each other and benefits of this method are discussed and described.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Davoodi, M.; Jafari, M. K.; and Sakhi, M. Amel, "Using New Signal Processing Techniques in Analyzing Masjed Soleyman Embankment Dam's Explosion Records" (2008). International Conference on Case Histories in Geotechnical Engineering. 33.
https://scholarsmine.mst.edu/icchge/6icchge/session03/33
Using New Signal Processing Techniques in Analyzing Masjed Soleyman Embankment Dam's Explosion Records
Arlington, Virginia
Blasting test studies have one drawback with regard to earthquake studies; they are concerned with vibrations of much smaller amplitude than those normally encountered in earthquakes. Consequently, blasting studies can be used to calibrate dam behavior in a linear elastic range. Accuracy of numerical models should be improved by full scale tests and in situ earthquake records. In this research, first of all a short review of different classical and modern signal processing methods is presented. As it is known, classical signal processing methods, such as FFT and PSD, have many limitations in non- stationary random vibration analysis. Blasting records are known to be one of the non – stationary signals in both intensity and frequency content. Blasting test records of Masjed Soleyman, the highest embankment dam in Iran, are processed in time – frequency domain by classical and TFD method. TFD method leads to better and more accurate system identification based on real available records in earth dam. Using this powerful and modern signal processing technique, frequency contents of blasting spectra are conducted and processing of the signal in both time and frequency domain can be performed. Also obtained results based on classical and TFD method are compared with each other and benefits of this method are discussed and described.
