TY - GEN
T1 - Reliability-Based Assessment of Damaged Prestressed Concrete I-Girder Bridges
AU - Addonizio, Gianmarco
AU - Losanno, Daniele
AU - Lantsoght, Eva O.L.
AU - Casas, Joan R.
N1 - Publisher Copyright:
© 2025 IABSE Congress Ghent 2025: The Essence of Structural Engineering for Society, Proceedings. All rights reserved.
PY - 2025
Y1 - 2025
N2 - Structural assessment of existing bridges becomes a challenging process in the presence of deterioration phenomena and outdated design action and resistance models. This paper explores the potentiality and effectiveness of reliability-based methods in the structural evaluation of existing PC I-girder bridges, highlighting scenarios where conventional methods, such as Partial Safety Factor Method, may underestimate structural capacity. Based on detailed visual inspection, in-situ data of deterioration phenomena is introduced in the probabilistic analysis and a Eurocode-based traffic model is adopted for the traffic load effect characterization. A case study is discussed emphasizing the advantages of adopting a reliability-focused assessment strategy and demonstrates that most of the investigated girders do not require intervention, even though considered inadequate, enhancing the efficiency and sustainability of infrastructure maintenance.
AB - Structural assessment of existing bridges becomes a challenging process in the presence of deterioration phenomena and outdated design action and resistance models. This paper explores the potentiality and effectiveness of reliability-based methods in the structural evaluation of existing PC I-girder bridges, highlighting scenarios where conventional methods, such as Partial Safety Factor Method, may underestimate structural capacity. Based on detailed visual inspection, in-situ data of deterioration phenomena is introduced in the probabilistic analysis and a Eurocode-based traffic model is adopted for the traffic load effect characterization. A case study is discussed emphasizing the advantages of adopting a reliability-focused assessment strategy and demonstrates that most of the investigated girders do not require intervention, even though considered inadequate, enhancing the efficiency and sustainability of infrastructure maintenance.
KW - Eurocode-based traffic load model
KW - existing prestressed concrete I-girder bridges
KW - reliability assessment
KW - structural deterioration and damage
UR - https://www.scopus.com/pages/publications/105021081212
U2 - 10.2749/ghent.2025.0217
DO - 10.2749/ghent.2025.0217
M3 - Contribución a la conferencia
AN - SCOPUS:105021081212
T3 - IABSE Congress Ghent 2025: The Essence of Structural Engineering for Society, Proceedings
SP - 217
EP - 225
BT - IABSE Congress Ghent 2025
A2 - Leonetti, Davide
A2 - Snijder, Bert
A2 - De Pauw, Bart
A2 - De Pauw, Bart
A2 - van Alphen, Sander
PB - International Association for Bridge and Structural Engineering (IABSE)
T2 - 2025 International Association for Bridge and Structural Engineering, IABSE 2025
Y2 - 27 August 2025 through 29 August 2025
ER -