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.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Structure & Infrastructure Engineering |
| Vol/bind | 16 |
| Udgave nummer | 1 |
| Sider (fra-til) | 138-168 |
| ISSN | 1573-2479 |
| DOI | |
| Status | Udgivet - 2. jan. 2020 |
Fingeraftryk
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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 tidsskrift › Tidsskriftartikel › Forskning › peer 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
PY - 2020/1/2
Y1 - 2020/1/2
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.
KW - UHPFRC
KW - operational modal analysis
KW - polynomial chaos expansion
KW - rehabilitation
KW - reliability analysis
KW - structural health monitoring
KW - time-seris analysis
U2 - 10.1080/15732479.2019.1650079
DO - 10.1080/15732479.2019.1650079
M3 - Journal article
VL - 16
SP - 138
EP - 168
JO - Structure & Infrastructure Engineering
JF - Structure & Infrastructure Engineering
SN - 1573-2479
IS - 1
ER -