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 proceedingConference contribution book

1 Citation (Scopus)

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.

LanguageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Place of PublicationBellingham
Volume8345
DOIs
Publication statusPublished - 2012
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012 - San Diego, CA, United States
Duration: 12 Mar 201215 Mar 2012

Conference

ConferenceSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
CountryUnited States
CitySan Diego, CA
Period12/03/1215/03/12

Fingerprint

Cable-stayed Bridge
Cable stayed bridges
Redistribution
Cable
cables
Cables
Sensing
Steel
Elongation
Monitoring System
Gages
Monitoring
Gauge
elongation
steels
vibration tests
Fiber Optics
Fiber optics
redundancy
Redundancy

Keywords

  • cable stayed bridge
  • data analysis
  • elasto-magnetic sensor
  • fiber Bragg grating
  • monitoring

Cite this

Zonta, D., Esposito, P., Molignoni, M., Pozzi, M., Zandonini, R., Wang, M., ... Glisic, B. (2012). Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8345). [834509] Bellingham. https://doi.org/10.1117/12.917540
Zonta, Daniele ; Esposito, Paolo ; Molignoni, Marco ; Pozzi, Matteo ; Zandonini, Riccardo ; Wang, Ming ; Zhao, Yang ; Inaudi, Daniele ; Posenato, Daniele ; Glisic, Branko. / Estimation of load redistribution in a cable-stayed bridge using a combination of sensing techniques. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8345 Bellingham, 2012.
@inproceedings{e656ad00663042cea99e2a4aaa7958b4,
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",
isbn = "9780819490025",
volume = "8345",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

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 Proceedings of SPIE - The International Society for Optical Engineering. vol. 8345, 834509, Bellingham, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, San Diego, CA, United States, 12/03/12. 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; Pozzi, Matteo; Zandonini, Riccardo; Wang, Ming; Zhao, Yang; Inaudi, Daniele; Posenato, Daniele; Glisic, Branko.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8345 Bellingham, 2012. 834509.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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

UR - http://www.scopus.com/inward/record.url?scp=84861159418&partnerID=8YFLogxK

U2 - 10.1117/12.917540

DO - 10.1117/12.917540

M3 - Conference contribution book

SN - 9780819490025

VL - 8345

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

CY - Bellingham

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 Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8345. Bellingham. 2012. 834509 https://doi.org/10.1117/12.917540