Monitoring of the UHPFRC strengthened Chillon viaduct under environmental and operational variability

Henar Martín-Sanz*, Konstantinos Tatsis, Vasilis K. Dertimanis, Luis David Avendaño-Valencia, Eugen Brühwiler, Eleni Chatzi

*Kontaktforfatter for dette arbejde

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Constructed in 1969, the Chillon viaducts constitute a vital component of the Swiss roadway network. The bridge deck was strengthened in 2015 by means of an Ultra High Performance Fiber Reinforced Cement-based Composite for alleviating the effects of deterioration that has been induced by Alkali-Silica Reaction. In order to assess the efficacy of this rehabilitation solution, and to further evaluate its long-term performance, a Structural Health Monitoring (SHM) campaign was implemented, relying on low-cost, yet easily deployable, sensors. The deployed monitoring solution includes a suite of accelerometers, strain gauges, temperature and humidity sensors. This work studies and reports on the influence of operational (traffic) and environmental (temperature and humidity) conditions onto structural performance, on the basis of monitoring data extracted form the first moths of the monitoring campaign. To this end, the monitoring data are initially processed by means of standard modal analysis methods, as well as non-stationary time-series analysis tools. In a second step, a finite element model of the system is built and updated, and subsequently exploited to deliver a comparison between the original and rehabilitated structure. Finally, by exploiting the updated system model, a reliability analysis is carried out, which confirms the efficiency of the strengthening solution.

OriginalsprogEngelsk
TidsskriftStructure & Infrastructure Engineering
Vol/bind16
Udgave nummer1
Sider (fra-til)138-168
ISSN1573-2479
DOI
StatusUdgivet - 2. jan. 2020

Fingeraftryk

viaduct
humidity
sensor
health monitoring
reliability analysis
Monitoring
accelerometer
time series analysis
monitoring
moth
gauge
cement
silica
temperature
Humidity sensors
Time series analysis
Bridge decks
Structural health monitoring
Temperature sensors
Modal analysis

Citer dette

Martín-Sanz, Henar ; Tatsis, Konstantinos ; Dertimanis, Vasilis K. ; Avendaño-Valencia, Luis David ; Brühwiler, Eugen ; Chatzi, Eleni. / Monitoring of the UHPFRC strengthened Chillon viaduct under environmental and operational variability. I: Structure & Infrastructure Engineering. 2020 ; Bind 16, Nr. 1. s. 138-168.
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abstract = "Constructed in 1969, the Chillon viaducts constitute a vital component of the Swiss roadway network. The bridge deck was strengthened in 2015 by means of an Ultra High Performance Fiber Reinforced Cement-based Composite for alleviating the effects of deterioration that has been induced by Alkali-Silica Reaction. In order to assess the efficacy of this rehabilitation solution, and to further evaluate its long-term performance, a Structural Health Monitoring (SHM) campaign was implemented, relying on low-cost, yet easily deployable, sensors. The deployed monitoring solution includes a suite of accelerometers, strain gauges, temperature and humidity sensors. This work studies and reports on the influence of operational (traffic) and environmental (temperature and humidity) conditions onto structural performance, on the basis of monitoring data extracted form the first moths of the monitoring campaign. To this end, the monitoring data are initially processed by means of standard modal analysis methods, as well as non-stationary time-series analysis tools. In a second step, a finite element model of the system is built and updated, and subsequently exploited to deliver a comparison between the original and rehabilitated structure. Finally, by exploiting the updated system model, a reliability analysis is carried out, which confirms the efficiency of the strengthening solution.",
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author = "Henar Mart{\'i}n-Sanz and Konstantinos Tatsis and Dertimanis, {Vasilis K.} and Avenda{\~n}o-Valencia, {Luis David} and Eugen Br{\"u}hwiler and Eleni Chatzi",
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Monitoring of the UHPFRC strengthened Chillon viaduct under environmental and operational variability. / Martín-Sanz, Henar; Tatsis, Konstantinos; Dertimanis, Vasilis K.; Avendaño-Valencia, Luis David; Brühwiler, Eugen; Chatzi, Eleni.

I: Structure & Infrastructure Engineering, Bind 16, Nr. 1, 02.01.2020, s. 138-168.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Monitoring of the UHPFRC strengthened Chillon viaduct under environmental and operational variability

AU - Martín-Sanz, Henar

AU - Tatsis, Konstantinos

AU - Dertimanis, Vasilis K.

AU - Avendaño-Valencia, Luis David

AU - Brühwiler, Eugen

AU - Chatzi, Eleni

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N2 - Constructed in 1969, the Chillon viaducts constitute a vital component of the Swiss roadway network. The bridge deck was strengthened in 2015 by means of an Ultra High Performance Fiber Reinforced Cement-based Composite for alleviating the effects of deterioration that has been induced by Alkali-Silica Reaction. In order to assess the efficacy of this rehabilitation solution, and to further evaluate its long-term performance, a Structural Health Monitoring (SHM) campaign was implemented, relying on low-cost, yet easily deployable, sensors. The deployed monitoring solution includes a suite of accelerometers, strain gauges, temperature and humidity sensors. This work studies and reports on the influence of operational (traffic) and environmental (temperature and humidity) conditions onto structural performance, on the basis of monitoring data extracted form the first moths of the monitoring campaign. To this end, the monitoring data are initially processed by means of standard modal analysis methods, as well as non-stationary time-series analysis tools. In a second step, a finite element model of the system is built and updated, and subsequently exploited to deliver a comparison between the original and rehabilitated structure. Finally, by exploiting the updated system model, a reliability analysis is carried out, which confirms the efficiency of the strengthening solution.

AB - Constructed in 1969, the Chillon viaducts constitute a vital component of the Swiss roadway network. The bridge deck was strengthened in 2015 by means of an Ultra High Performance Fiber Reinforced Cement-based Composite for alleviating the effects of deterioration that has been induced by Alkali-Silica Reaction. In order to assess the efficacy of this rehabilitation solution, and to further evaluate its long-term performance, a Structural Health Monitoring (SHM) campaign was implemented, relying on low-cost, yet easily deployable, sensors. The deployed monitoring solution includes a suite of accelerometers, strain gauges, temperature and humidity sensors. This work studies and reports on the influence of operational (traffic) and environmental (temperature and humidity) conditions onto structural performance, on the basis of monitoring data extracted form the first moths of the monitoring campaign. To this end, the monitoring data are initially processed by means of standard modal analysis methods, as well as non-stationary time-series analysis tools. In a second step, a finite element model of the system is built and updated, and subsequently exploited to deliver a comparison between the original and rehabilitated structure. Finally, by exploiting the updated system model, a reliability analysis is carried out, which confirms the efficiency of the strengthening solution.

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KW - reliability analysis

KW - structural health monitoring

KW - time-seris analysis

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