Reliability Analysis of Existing Post-Tensioned Concrete Bridge Affected by Corrosion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F24%3A00378169" target="_blank" >RIV/68407700:21610/24:00378169 - isvavai.cz</a>

Result on the web

<a href="https://fib-international.org/publications/fib-proceedings/15th-phd-symposium-in-budapest-hungary-2024-proceedings-em-pdf-em-detail.html" target="_blank" >https://fib-international.org/publications/fib-proceedings/15th-phd-symposium-in-budapest-hungary-2024-proceedings-em-pdf-em-detail.html</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Reliability Analysis of Existing Post-Tensioned Concrete Bridge Affected by Corrosion

Original language description

During the second half of the last century, a significant number of post-tensioned concrete bridges were constructed. However, many of these structures have not received adequate maintenance over their typical lifespan of approximately 50 years. As a result, these bridges are now exhibiting signs of deteri-oration, primarily due to leakages and subsequent corrosion, partly affected also by an insufficient concrete cover. This is why nowadays it is essential to assess the load-bearing capacity of these bridges, taking into account the effects of corrosion. This study presents a case study of the estimation of the load-bearing capacity of an existing post-tensioned concrete bridge constructed in 1964. In engineering practice, this assessment is typically conducted using the partial factor method, in accordance with current standards such as the Eurocodes and the Czech standards ČSN, which often impose stricter requirements than the original standards applied in the design phase. As the use of the partial factor method can sometimes result in conservative estimates of load-bearing capacity, a fully probabilistic analysis is conducted in this study. It allows for an adequate consideration of uncertainties related to survey outcomes and level of information about resistance, load effects, and corrosion effects. It is demonstrated that the probabilistic approach is less conservative and has the potential to provide higher estimates of the load-bearing capacity for existing post-tensioned bridges.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA24-10892S" target="_blank" >GA24-10892S: Machine Learning for Multiscale Modelling of Spatial Variability and Fracture for Sustainable Concrete Structures</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 15th fib International PhD Symposium in Civil Engineering

ISBN

978-2-940643-24-0

ISSN

2617-4820

e-ISSN

2617-4820

Number of pages

8

Pages from-to

667-674

Publisher name

fib - fédération internationale du béton

Place of publication

Lausanne

Event location

Budapešť

Event date

Aug 28, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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