Monitoring and Identification of Vibration Frequencies on a Portion of México City Metro Line 12
Joint Authors
Alvarez-Icaza, Luis
García-Illescas, Miguel Ángel
Murià-Vila, David
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-07-21
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
The use of recursive subspace-based identification methods is analyzed in the estimation of the most significant vibration frequencies along an elevated railroad segment of México City Metro Line 12 using ambient vibration measurements recorded from 2012, when the line was opened, to 2018.
Due to the railroad characteristics, the use of high-order models and the systematic tuning of the methods are required to achieve low uncertainty in frequency estimation.
A frequency history is generated using these high-order models in order to check for variations along the seven years where important events took place: two low- and one high-intensity earthquakes, paving, and construction of sidewalks and planters around the sensor station.
Results are consistent for all methods under analysis in the identified frequencies, suggesting that the system has preserved its structural health.
To produce independent results, spectral analysis was performed showing that the associated frequency history is again consistent with that generated with recursive subspace-based identification methods.
Overall, results indicate that these subspace methods are suitable for frequency monitoring in the studied system offering, in the case of recursive N4SID, important advantages in terms of low computational cost, real-time implementation, and smaller uncertainty.
American Psychological Association (APA)
García-Illescas, Miguel Ángel& Murià-Vila, David& Alvarez-Icaza, Luis. 2019. Monitoring and Identification of Vibration Frequencies on a Portion of México City Metro Line 12. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1116117
Modern Language Association (MLA)
García-Illescas, Miguel Ángel…[et al.]. Monitoring and Identification of Vibration Frequencies on a Portion of México City Metro Line 12. Advances in Civil Engineering No. 2019 (2019), pp.1-13.
https://search.emarefa.net/detail/BIM-1116117
American Medical Association (AMA)
García-Illescas, Miguel Ángel& Murià-Vila, David& Alvarez-Icaza, Luis. Monitoring and Identification of Vibration Frequencies on a Portion of México City Metro Line 12. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1116117
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116117