TY - GEN
T1 - CFRP strengthening and long-term monitoring of an old metallic roadway bridge in Melbourne
AU - Ghafoori, Elyas
AU - Hosseini, Ardalan
AU - Al-Mahaidi, Riadh
AU - Zhao, Xiao Ling
AU - Motavalli, Masoud
AU - Koay, Yew Chin
N1 - Funding Information:
The authors gratefully acknowledge the financial ofCrackOrientationonFatigueBehaviourGhafooriE??MotavalliM??PowersN ? Effect support provided by the Australian Research of CFRP? Strengthened Steel Plates? Council ?ARC ? Linkage Grant ?LP ? ? ? ? ? ? ? ? ? ? ? the Swiss National Science Foundation ?SNSF Project ??Composite Structures ? ? ? ? ? ? ? ? ? P No ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? and the S ?P Clever ReinforcementCompanyAGinSwitzerland ? GhafooriE??MotavalliM??Koay? ??AljabarN?J???haoX ?L ??
Publisher Copyright:
© 2019 IABSE. All rights reserved.
PY - 2019
Y1 - 2019
N2 - This study gives an overview on carbon fibre-reinforced polymer (CFRP) strengthening and wireless sensor network (WSN) monitoring of a 121-year-old metallic roadway bridge in Melbourne, Australia. A flat prestressed unbonded retrofit (FPUR) system was developed to apply prestressed CFRP plates to the steel cross-girders of Diamond-Creek Bridge. The bridge is subjected to daily passenger and heavy truck vehicles. Sets of laboratory tests were performed to examine the efficiency and fatigue performance of the proposed FPUR system, prior to its installation on the bridge. Furthermore, in order to demonstrate the efficiency of the proposed retrofit technique, the bridge was instrumented with different types of sensors (including strain gauges, temperature and humidity sensors), and short- and long-term measurements were performed. As for short-term measurements, the bridge was loaded by a 42.5-tonne semi-trailer before and after strengthening. For the long-term monitoring, a WSN system was used to monitor the prestress level in the CFRP reinforcements for at least one year. The CFRP plates were prestressed up to about 980 MPa (38% of the CFRP ultimate strength), which resulted in about 50% reduction in the maximum tensile stress in the bottom flanges of the strengthened I-girders. The results of the short- and long-term measurements in this study showed that the proposed FPUR system can be very effective for flexural and fatigue strengthening of such bridge girders.
AB - This study gives an overview on carbon fibre-reinforced polymer (CFRP) strengthening and wireless sensor network (WSN) monitoring of a 121-year-old metallic roadway bridge in Melbourne, Australia. A flat prestressed unbonded retrofit (FPUR) system was developed to apply prestressed CFRP plates to the steel cross-girders of Diamond-Creek Bridge. The bridge is subjected to daily passenger and heavy truck vehicles. Sets of laboratory tests were performed to examine the efficiency and fatigue performance of the proposed FPUR system, prior to its installation on the bridge. Furthermore, in order to demonstrate the efficiency of the proposed retrofit technique, the bridge was instrumented with different types of sensors (including strain gauges, temperature and humidity sensors), and short- and long-term measurements were performed. As for short-term measurements, the bridge was loaded by a 42.5-tonne semi-trailer before and after strengthening. For the long-term monitoring, a WSN system was used to monitor the prestress level in the CFRP reinforcements for at least one year. The CFRP plates were prestressed up to about 980 MPa (38% of the CFRP ultimate strength), which resulted in about 50% reduction in the maximum tensile stress in the bottom flanges of the strengthened I-girders. The results of the short- and long-term measurements in this study showed that the proposed FPUR system can be very effective for flexural and fatigue strengthening of such bridge girders.
KW - Long-term structural health monitoring (SHM)
KW - Metallic bridges
KW - Prestressed CFRP plates
KW - Wireless sensor network (WSN) system
UR - http://www.scopus.com/inward/record.url?scp=85065253645&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:85065253645
T3 - IABSE Symposium, Guimaraes 2019: Towards a Resilient Built Environment Risk and Asset Management - Report
SP - 360
EP - 368
BT - IABSE Symposium, Guimaraes 2019
PB - International Association for Bridge and Structural Engineering (IABSE)
T2 - IABSE Symposium 2019 Guimaraes: Towards a Resilient Built Environment - Risk and Asset Management
Y2 - 27 March 2019 through 29 March 2019
ER -