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Influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique

Ambient vibration (AV) technique is widely used nowadays for ground fundamental frequency prediction. This technique is easy, quick, non-destructive, less operator required and reliable result. The input motions of ambient vibration are originally collected from surrounding natural and artificial...

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Main Authors: Kamarudin, A. F., Md Noh, M. S., Mokhatar, S. N., Mohd Anuar, M. A., Ibrahim, A., Ibrahim, Z., Daud, M. E.
Format: Conference or Workshop Item
Language:English
Published: 2018
Subjects:
TF Railroad engineering and operation
Online Access:http://eprints.uthm.edu.my/7073/1/P9106_17e48f28074bb5e67f70df19e49e122b.pdf
http://eprints.uthm.edu.my/7073/
https://doi.org/10.1088/1742-6596/995/1/012101
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spelling my.uthm.eprints.70732022-05-24T01:58:02Z http://eprints.uthm.edu.my/7073/ Influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique Kamarudin, A. F. Md Noh, M. S. Mokhatar, S. N. Mohd Anuar, M. A. Ibrahim, A. Ibrahim, Z. Daud, M. E. TF Railroad engineering and operation Ambient vibration (AV) technique is widely used nowadays for ground fundamental frequency prediction. This technique is easy, quick, non-destructive, less operator required and reliable result. The input motions of ambient vibration are originally collected from surrounding natural and artificial excitations. But, careful data acquisition controlled must be implemented to reduce the intrusion of short period noise that could imply the quality of frequency prediction of an investigated site. In this study, investigation on the primary noise intrusion under peak (morning, afternoon and evening) and off peak (early morning) traffic flows (only 8 meter from sensor to road shoulder) against the stability and quality of ground fundamental frequency prediction were carried out. None of specific standard is available for AV data acquisition and processing. Thus, some field and processing parameters recommended by previous studies and guideline were considered. Two units of 1 Hz tri-axial seismometer sensor were closely positioned in front of the main entrance Universiti Tun Hussein Onn Malaysia. 15 minutes of recording length were taken during peak and off peak periods of traffic flows. All passing vehicles were counted and grouped into four classes. Three components of ambient vibration time series recorded in the North-South: NS, East-West: EW and vertical: UD directions were automatically computed into Horizontal to Vertical Spectral Ratio (HVSR), by using open source software of GEOPSY for fundamental ground frequency, Fo determination. Single sharp peak pattern of HVSR curves have been obtained at peak frequencies between 1.33 to 1.38 Hz which classified under soft to dense soil classification. Even identical HVSR curves pattern with close frequencies prediction were obtained under both periods of AV measurement, however the total numbers of stable and quality windows selected for HVSR computation were significantly different but both have satisfied the requirement given by SESAME (2004) guideline. Besides, the second peak frequencies from the early morning HVSR curve was clearly indicated between 8.23 to 8.55 Hz at very low amplitude (Ao < 2), but it should be neglected according to the similar guideline criteria. In conclusion, the ground fundamental frequency using HVSR method was successfully determined by 1 Hz seismometer instrument with recommended to specific parameters consideration on field as well as data processing, without disruption from the nearest traffic excitations. 2018 Conference or Workshop Item PeerReviewed text en http://eprints.uthm.edu.my/7073/1/P9106_17e48f28074bb5e67f70df19e49e122b.pdf Kamarudin, A. F. and Md Noh, M. S. and Mokhatar, S. N. and Mohd Anuar, M. A. and Ibrahim, A. and Ibrahim, Z. and Daud, M. E. (2018) Influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique. In: ISMAP 2017, October 28, 2017, Batu Pahat, Johor. https://doi.org/10.1088/1742-6596/995/1/012101
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
topic TF Railroad engineering and operation
spellingShingle TF Railroad engineering and operation
Kamarudin, A. F.
Md Noh, M. S.
Mokhatar, S. N.
Mohd Anuar, M. A.
Ibrahim, A.
Ibrahim, Z.
Daud, M. E.
Influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique
description Ambient vibration (AV) technique is widely used nowadays for ground fundamental frequency prediction. This technique is easy, quick, non-destructive, less operator required and reliable result. The input motions of ambient vibration are originally collected from surrounding natural and artificial excitations. But, careful data acquisition controlled must be implemented to reduce the intrusion of short period noise that could imply the quality of frequency prediction of an investigated site. In this study, investigation on the primary noise intrusion under peak (morning, afternoon and evening) and off peak (early morning) traffic flows (only 8 meter from sensor to road shoulder) against the stability and quality of ground fundamental frequency prediction were carried out. None of specific standard is available for AV data acquisition and processing. Thus, some field and processing parameters recommended by previous studies and guideline were considered. Two units of 1 Hz tri-axial seismometer sensor were closely positioned in front of the main entrance Universiti Tun Hussein Onn Malaysia. 15 minutes of recording length were taken during peak and off peak periods of traffic flows. All passing vehicles were counted and grouped into four classes. Three components of ambient vibration time series recorded in the North-South: NS, East-West: EW and vertical: UD directions were automatically computed into Horizontal to Vertical Spectral Ratio (HVSR), by using open source software of GEOPSY for fundamental ground frequency, Fo determination. Single sharp peak pattern of HVSR curves have been obtained at peak frequencies between 1.33 to 1.38 Hz which classified under soft to dense soil classification. Even identical HVSR curves pattern with close frequencies prediction were obtained under both periods of AV measurement, however the total numbers of stable and quality windows selected for HVSR computation were significantly different but both have satisfied the requirement given by SESAME (2004) guideline. Besides, the second peak frequencies from the early morning HVSR curve was clearly indicated between 8.23 to 8.55 Hz at very low amplitude (Ao < 2), but it should be neglected according to the similar guideline criteria. In conclusion, the ground fundamental frequency using HVSR method was successfully determined by 1 Hz seismometer instrument with recommended to specific parameters consideration on field as well as data processing, without disruption from the nearest traffic excitations.
format Conference or Workshop Item
author Kamarudin, A. F.
Md Noh, M. S.
Mokhatar, S. N.
Mohd Anuar, M. A.
Ibrahim, A.
Ibrahim, Z.
Daud, M. E.
author_facet Kamarudin, A. F.
Md Noh, M. S.
Mokhatar, S. N.
Mohd Anuar, M. A.
Ibrahim, A.
Ibrahim, Z.
Daud, M. E.
author_sort Kamarudin, A. F.
title Influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique
title_short Influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique
title_full Influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique
title_fullStr Influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique
title_full_unstemmed Influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique
title_sort influence of traffic vehicles against ground fundamental frequency prediction using ambient vibration technique
publishDate 2018
url http://eprints.uthm.edu.my/7073/1/P9106_17e48f28074bb5e67f70df19e49e122b.pdf
http://eprints.uthm.edu.my/7073/
https://doi.org/10.1088/1742-6596/995/1/012101
_version_ 1738581572585521152
score 13.211869

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