Reliability-Based Assessment of Damaged Prestressed Concrete I-Girder Bridges

Gianmarco Addonizio; Daniele Losanno; Eva O.L. Lantsoght; Joan R. Casas

Reliability-Based Assessment of Damaged Prestressed Concrete I-Girder Bridges

Gianmarco Addonizio^*, Daniele Losanno, Eva O.L. Lantsoght, Joan R. Casas

^*Corresponding author for this work

Concrete Structures

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

Abstract

Structural assessment of existing bridges becomes a challenging process in the presence of deterioration phenomena and outdated design action and resistance models.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 Eurocodebased 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.

Original language	English
Title of host publication	IABSE Congress Ghent 2025
Subtitle of host publication	The Essence of Structural Engineering for Society
Editors	Davide Leonetti, H.H. (Bert) Snijder, Bart De Pauw, Sander van Alphen
Place of Publication	Zurich
Publisher	International Association for Bridge and Structural Engineering (IABSE)
Pages	217-225
Number of pages	9
ISBN (Print)	978-3-85748-210-6
Publication status	Published - 2025
Event	IABSE Congress Ghent 2025: The Essence of Structural Engineering for Society - Ghent, Belgium Duration: 27 Aug 2025 → 29 Aug 2025 https://iabse.org/Ghent2025

Conference

Conference	IABSE Congress Ghent 2025
Country/Territory	Belgium
City	Ghent
Period	27/08/25 → 29/08/25
Internet address	https://iabse.org/Ghent2025

Bibliographical note

Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl.

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

reliability assessment
existing prestressed concrete I-girder bridges
Eurocode-based traffic load model
structural deterioration and damage

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Addonizio, G., Losanno, D., Lantsoght, E. O. L., & Casas, J. R. (2025). Reliability-Based Assessment of Damaged Prestressed Concrete I-Girder Bridges. In D. Leonetti, H. H. Snijder, B. De Pauw, & S. van Alphen (Eds.), IABSE Congress Ghent 2025: The Essence of Structural Engineering for Society (pp. 217-225). International Association for Bridge and Structural Engineering (IABSE).

Addonizio, Gianmarco ; Losanno, Daniele ; Lantsoght, Eva O.L. et al. / Reliability-Based Assessment of Damaged Prestressed Concrete I-Girder Bridges. IABSE Congress Ghent 2025: The Essence of Structural Engineering for Society. editor / Davide Leonetti ; H.H. (Bert) Snijder ; Bart De Pauw ; Sander van Alphen. Zurich : International Association for Bridge and Structural Engineering (IABSE), 2025. pp. 217-225

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abstract = "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 Eurocodebased 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.",

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author = "Gianmarco Addonizio and Daniele Losanno and Lantsoght, {Eva O.L.} and Casas, {Joan R.}",

note = "Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl. Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. ; IABSE Congress Ghent 2025 : The Essence of Structural Engineering for Society ; Conference date: 27-08-2025 Through 29-08-2025",

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Addonizio, G, Losanno, D, Lantsoght, EOL & Casas, JR 2025, Reliability-Based Assessment of Damaged Prestressed Concrete I-Girder Bridges. in D Leonetti, HH Snijder, B De Pauw & S van Alphen (eds), IABSE Congress Ghent 2025: The Essence of Structural Engineering for Society. International Association for Bridge and Structural Engineering (IABSE), Zurich, pp. 217-225, IABSE Congress Ghent 2025, Ghent, Belgium, 27/08/25.

Reliability-Based Assessment of Damaged Prestressed Concrete I-Girder Bridges. / Addonizio, Gianmarco; Losanno, Daniele; Lantsoght, Eva O.L. et al.
IABSE Congress Ghent 2025: The Essence of Structural Engineering for Society. ed. / Davide Leonetti; H.H. (Bert) Snijder; Bart De Pauw; Sander van Alphen. Zurich: International Association for Bridge and Structural Engineering (IABSE), 2025. p. 217-225.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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 - Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl. Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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 Eurocodebased 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 Eurocodebased 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 - reliability assessment

KW - existing prestressed concrete I-girder bridges

KW - Eurocode-based traffic load model

KW - structural deterioration and damage

M3 - Conference contribution

SN - 978-3-85748-210-6

SP - 217

EP - 225

BT - IABSE Congress Ghent 2025

A2 - Leonetti, Davide

A2 - Snijder, H.H. (Bert)

A2 - De Pauw, Bart

A2 - van Alphen, Sander

PB - International Association for Bridge and Structural Engineering (IABSE)

CY - Zurich

T2 - IABSE Congress Ghent 2025

Y2 - 27 August 2025 through 29 August 2025

ER -

Reliability-Based Assessment of Damaged Prestressed Concrete I-Girder Bridges

Abstract

Conference

Bibliographical note

Keywords

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