Measuring Dynamic Response of the Wilford Suspension Bridge with a Vision-Based Measurement System: A Case Study

Rolands Kromanis; Said Elias

doi:10.1007/978-3-031-07254-3_28

Measuring Dynamic Response of the Wilford Suspension Bridge with a Vision-Based Measurement System: A Case Study

Rolands Kromanis^*, Said Elias

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

2 Citations (Scopus)

Abstract

In this case study the dynamic response of the Wilford suspension bridge is measure using computer vision-based measurement system. The footbridge is subjected to forced excitations, students walking over it, jumping at certain part of it. A modified GoPro action camera with zoom lens is placed approximately 70 m away from the bridge and focused to record videos of multiple targets (hanger to beam connections). Template matching technique is used for the estimation of pixel motions of the targets. Accurate target displacements are derived. They are then used to obtain vibration frequencies and draw the mode shape of the first vertical vibration mode. It is concluded that, although vibration frequencies corresponding to higher vibration modes can be measured, finding the vibration mode shape is difficult with the measurement resolution of 1/10 pixels used in this study.

Original language	English
Title of host publication	European Workshop on Structural Health Monitoring, EWSHM 2022, Volume 1
Editors	Piervincenzo Rizzo, Alberto Milazzo
Publisher	Springer
Pages	280-289
Number of pages	10
ISBN (Electronic)	978-3-031-07254-3
ISBN (Print)	9783031072536
DOIs	https://doi.org/10.1007/978-3-031-07254-3_28
Publication status	Published - 19 Jun 2022
Event	10th European Workshop on Structural Health Monitoring, EWSHM 2022 - Palermo, Italy Duration: 4 Jul 2022 → 7 Jul 2022 Conference number: 10

Publication series

Name	Lecture Notes in Civil Engineering
Volume	253 LNCE
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	10th European Workshop on Structural Health Monitoring, EWSHM 2022
Abbreviated title	EWSHM 2022
Country/Territory	Italy
City	Palermo
Period	4/07/22 → 7/07/22

Keywords

Distributed response measurement
Dynamic response
Forced excitations
Suspension bridge
Vision-based measurement

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10.1007/978-3-031-07254-3_28

Cite this

Kromanis, R., & Elias, S. (2022). Measuring Dynamic Response of the Wilford Suspension Bridge with a Vision-Based Measurement System: A Case Study. In P. Rizzo, & A. Milazzo (Eds.), European Workshop on Structural Health Monitoring, EWSHM 2022, Volume 1 (pp. 280-289). (Lecture Notes in Civil Engineering; Vol. 253 LNCE). Springer. https://doi.org/10.1007/978-3-031-07254-3_28

@inproceedings{bb5eab237c684e279228c734bf2ea389,

title = "Measuring Dynamic Response of the Wilford Suspension Bridge with a Vision-Based Measurement System: A Case Study",

abstract = "In this case study the dynamic response of the Wilford suspension bridge is measure using computer vision-based measurement system. The footbridge is subjected to forced excitations, students walking over it, jumping at certain part of it. A modified GoPro action camera with zoom lens is placed approximately 70 m away from the bridge and focused to record videos of multiple targets (hanger to beam connections). Template matching technique is used for the estimation of pixel motions of the targets. Accurate target displacements are derived. They are then used to obtain vibration frequencies and draw the mode shape of the first vertical vibration mode. It is concluded that, although vibration frequencies corresponding to higher vibration modes can be measured, finding the vibration mode shape is difficult with the measurement resolution of 1/10 pixels used in this study.",

keywords = "Distributed response measurement, Dynamic response, Forced excitations, Suspension bridge, Vision-based measurement",

author = "Rolands Kromanis and Said Elias",

note = "Funding Information: Acknowledgements. The financial support from Sustainable Futures, Nottingham Trent University, for the equipment used in monitoring the Wilford Suspension Bridge is gratefully acknowledged. The authors are also thankful to Dr Panos Psimoulis, Mr Sean Ince and Dr Lukasz Bonen-berg from Nottingham Geospatial Institute of the University of Nottingham who organized the Wilford suspension bridge monitoring. Funding Information: The financial support from Sustainable Futures, Nottingham Trent University, for the equipment used in monitoring the Wilford Suspension Bridge is gratefully acknowledged. The authors are also thankful to Dr Panos Psimoulis, Mr Sean Ince and Dr Lukasz Bonen-berg from Nottingham Geospatial Institute of the University of Nottingham who organized the Wilford suspension bridge monitoring. Publisher Copyright: {\textcopyright} 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.; 10th European Workshop on Structural Health Monitoring, EWSHM 2022, EWSHM 2022 ; Conference date: 04-07-2022 Through 07-07-2022",

year = "2022",

month = jun,

day = "19",

doi = "10.1007/978-3-031-07254-3_28",

language = "English",

isbn = "9783031072536",

series = "Lecture Notes in Civil Engineering",

publisher = "Springer",

pages = "280--289",

editor = "Piervincenzo Rizzo and Alberto Milazzo",

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Kromanis, R & Elias, S 2022, Measuring Dynamic Response of the Wilford Suspension Bridge with a Vision-Based Measurement System: A Case Study. in P Rizzo & A Milazzo (eds), European Workshop on Structural Health Monitoring, EWSHM 2022, Volume 1. Lecture Notes in Civil Engineering, vol. 253 LNCE, Springer, pp. 280-289, 10th European Workshop on Structural Health Monitoring, EWSHM 2022, Palermo, Italy, 4/07/22. https://doi.org/10.1007/978-3-031-07254-3_28

Measuring Dynamic Response of the Wilford Suspension Bridge with a Vision-Based Measurement System: A Case Study. / Kromanis, Rolands; Elias, Said.
European Workshop on Structural Health Monitoring, EWSHM 2022, Volume 1. ed. / Piervincenzo Rizzo; Alberto Milazzo. Springer, 2022. p. 280-289 (Lecture Notes in Civil Engineering; Vol. 253 LNCE).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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T1 - Measuring Dynamic Response of the Wilford Suspension Bridge with a Vision-Based Measurement System

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AU - Kromanis, Rolands

AU - Elias, Said

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N2 - In this case study the dynamic response of the Wilford suspension bridge is measure using computer vision-based measurement system. The footbridge is subjected to forced excitations, students walking over it, jumping at certain part of it. A modified GoPro action camera with zoom lens is placed approximately 70 m away from the bridge and focused to record videos of multiple targets (hanger to beam connections). Template matching technique is used for the estimation of pixel motions of the targets. Accurate target displacements are derived. They are then used to obtain vibration frequencies and draw the mode shape of the first vertical vibration mode. It is concluded that, although vibration frequencies corresponding to higher vibration modes can be measured, finding the vibration mode shape is difficult with the measurement resolution of 1/10 pixels used in this study.

AB - In this case study the dynamic response of the Wilford suspension bridge is measure using computer vision-based measurement system. The footbridge is subjected to forced excitations, students walking over it, jumping at certain part of it. A modified GoPro action camera with zoom lens is placed approximately 70 m away from the bridge and focused to record videos of multiple targets (hanger to beam connections). Template matching technique is used for the estimation of pixel motions of the targets. Accurate target displacements are derived. They are then used to obtain vibration frequencies and draw the mode shape of the first vertical vibration mode. It is concluded that, although vibration frequencies corresponding to higher vibration modes can be measured, finding the vibration mode shape is difficult with the measurement resolution of 1/10 pixels used in this study.

KW - Distributed response measurement

KW - Dynamic response

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Measuring Dynamic Response of the Wilford Suspension Bridge with a Vision-Based Measurement System: A Case Study

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