Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques

Daniele Zonta; Paolo Esposito; Marco Molignoni; Matteo Pozzi; Riccardo Zandonini; Ming Wang; Yang Zhao; Daniele Inaudi; Daniele Posenato; Branko Glisic

doi:10.1117/12.917540

Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques

Daniele Zonta, Paolo Esposito, Marco Molignoni, Matteo Pozzi, Riccardo Zandonini, Ming Wang, Yang Zhao, Daniele Inaudi, Daniele Posenato, Branko Glisic

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

The motivation of this work is the installation of a monitoring system on a new cable-stayed bridge spanning the Adige River 10 km north of the town of Trento. This is a statically indeterminate structure, having a composite steel-concrete deck of length 260 m overall, supported by 12 stay cables, 6 per deck side. These are full locked steel cables of diameters 116 mm and 128 mm, designed for operational loads varying from 5000 to 8000 kN. The structural redundancy suggests that plastic load redistribution among the cables can be expected in the long term. To monitor such load redistribution, the owner decided to install a monitoring system to measure cable stress; the precision specified was of the order of few MPa. However no cable release or any form of on-site calibration involving tension change was allowed. The solution found was a combination of built-on-site electromagnetic and fiber-optic elongation gauges, these appropriately distributed on both the cables and the anchorages. We discuss how the set of gauges allows tension and elongation measurement with the appropriate precision, and compare the initial monitoring results with the tension estimates made using a non-destructive vibration test.

Original language	English (US)
Title of host publication	Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
DOIs	https://doi.org/10.1117/12.917540
State	Published - 2012
Externally published	Yes
Event	Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012 - San Diego, CA, United States Duration: Mar 12 2012 → Mar 15 2012

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	8345
ISSN (Print)	0277-786X

Other

Other	Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
Country/Territory	United States
City	San Diego, CA
Period	3/12/12 → 3/15/12

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Keywords

Cable stayed bridge
Data analysis
Elasto-magnetic sensor
Fiber Bragg Grating
Monitoring

Access to Document

10.1117/12.917540

Cite this

Zonta, D., Esposito, P., Molignoni, M., Pozzi, M., Zandonini, R., Wang, M., Zhao, Y., Inaudi, D., Posenato, D., & Glisic, B. (2012). Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012 Article 834509 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8345). https://doi.org/10.1117/12.917540

@inproceedings{c893e4bbd9ae45d8825d8584d7778069,

title = "Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques",

abstract = "The motivation of this work is the installation of a monitoring system on a new cable-stayed bridge spanning the Adige River 10 km north of the town of Trento. This is a statically indeterminate structure, having a composite steel-concrete deck of length 260 m overall, supported by 12 stay cables, 6 per deck side. These are full locked steel cables of diameters 116 mm and 128 mm, designed for operational loads varying from 5000 to 8000 kN. The structural redundancy suggests that plastic load redistribution among the cables can be expected in the long term. To monitor such load redistribution, the owner decided to install a monitoring system to measure cable stress; the precision specified was of the order of few MPa. However no cable release or any form of on-site calibration involving tension change was allowed. The solution found was a combination of built-on-site electromagnetic and fiber-optic elongation gauges, these appropriately distributed on both the cables and the anchorages. We discuss how the set of gauges allows tension and elongation measurement with the appropriate precision, and compare the initial monitoring results with the tension estimates made using a non-destructive vibration test.",

keywords = "Cable stayed bridge, Data analysis, Elasto-magnetic sensor, Fiber Bragg Grating, Monitoring",

author = "Daniele Zonta and Paolo Esposito and Marco Molignoni and Matteo Pozzi and Riccardo Zandonini and Ming Wang and Yang Zhao and Daniele Inaudi and Daniele Posenato and Branko Glisic",

year = "2012",

doi = "10.1117/12.917540",

language = "English (US)",

isbn = "9780819490025",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012",

note = "Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012 ; Conference date: 12-03-2012 Through 15-03-2012",

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Zonta, D, Esposito, P, Molignoni, M, Pozzi, M, Zandonini, R, Wang, M, Zhao, Y, Inaudi, D, Posenato, D & Glisic, B 2012, Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques. in Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012., 834509, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, San Diego, CA, United States, 3/12/12. https://doi.org/10.1117/12.917540

Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques. / Zonta, Daniele; Esposito, Paolo; Molignoni, Marco et al.
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012. 2012. 834509 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8345).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques

AU - Zonta, Daniele

AU - Esposito, Paolo

AU - Molignoni, Marco

AU - Pozzi, Matteo

AU - Zandonini, Riccardo

AU - Wang, Ming

AU - Zhao, Yang

AU - Inaudi, Daniele

AU - Posenato, Daniele

AU - Glisic, Branko

PY - 2012

Y1 - 2012

N2 - The motivation of this work is the installation of a monitoring system on a new cable-stayed bridge spanning the Adige River 10 km north of the town of Trento. This is a statically indeterminate structure, having a composite steel-concrete deck of length 260 m overall, supported by 12 stay cables, 6 per deck side. These are full locked steel cables of diameters 116 mm and 128 mm, designed for operational loads varying from 5000 to 8000 kN. The structural redundancy suggests that plastic load redistribution among the cables can be expected in the long term. To monitor such load redistribution, the owner decided to install a monitoring system to measure cable stress; the precision specified was of the order of few MPa. However no cable release or any form of on-site calibration involving tension change was allowed. The solution found was a combination of built-on-site electromagnetic and fiber-optic elongation gauges, these appropriately distributed on both the cables and the anchorages. We discuss how the set of gauges allows tension and elongation measurement with the appropriate precision, and compare the initial monitoring results with the tension estimates made using a non-destructive vibration test.

AB - The motivation of this work is the installation of a monitoring system on a new cable-stayed bridge spanning the Adige River 10 km north of the town of Trento. This is a statically indeterminate structure, having a composite steel-concrete deck of length 260 m overall, supported by 12 stay cables, 6 per deck side. These are full locked steel cables of diameters 116 mm and 128 mm, designed for operational loads varying from 5000 to 8000 kN. The structural redundancy suggests that plastic load redistribution among the cables can be expected in the long term. To monitor such load redistribution, the owner decided to install a monitoring system to measure cable stress; the precision specified was of the order of few MPa. However no cable release or any form of on-site calibration involving tension change was allowed. The solution found was a combination of built-on-site electromagnetic and fiber-optic elongation gauges, these appropriately distributed on both the cables and the anchorages. We discuss how the set of gauges allows tension and elongation measurement with the appropriate precision, and compare the initial monitoring results with the tension estimates made using a non-destructive vibration test.

KW - Cable stayed bridge

KW - Data analysis

KW - Elasto-magnetic sensor

KW - Fiber Bragg Grating

KW - Monitoring

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M3 - Conference contribution

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SN - 9780819490025

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012

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ER -

Zonta D, Esposito P, Molignoni M, Pozzi M, Zandonini R, Wang M et al. Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012. 2012. 834509. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.917540

Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques

Abstract

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All Science Journal Classification (ASJC) codes

Keywords

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