Reliability-based optimisation design of post-tensioned concrete box girder bridges considering pitting corrosion attack

Nguyen, Van Son; Jeong, Min Chul; Han, Tong Seok; Kong, Jun

doi:10.1080/15732479.2010.524653

Cited by 8 publications

(18 citation statements)

References 32 publications

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“…Verification of the calculation values as well as of the applied methodology was carried out by means of FEM, using ANSYS 12 software. Nguyen et al [129] proposed a MATLAB optimization toolbox-based approach for analyzing reliabilitybased design optimization (RBDO) problems with emphasis on prestressed concrete (PC) box girder bridges under the attack of pitting corrosion. Savkovic et al [130] proposed an optimum solution to optimization of the box section of the main girder of the bridge crane.…”

Section: Folded Plate Methodsmentioning

confidence: 99%

Review of Elastic Analysis of Box Girder Bridges

Ezeokpube

2014

Nig. J. Tech.

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The The The The importance of thin importance of thin importance of thin importance of thin-walled box girder bridges has attracted the attention of researchers since the last five walled box girder bridges has attracted the attention of researchers since the last five walled box girder bridges has attracted the attention of researchers since the last five walled box girder bridges has attracted the attention of researchers since the last five decades. A lot of literature has dealt with the analytical formulations as well as experimental investigations. Field decades. A lot of literature has dealt with the analytical formulations as well as experimental investigations. Field decades. A lot of literature has dealt with the analytical formulations as well as experimental investigations. Field decades. A lot of literature has dealt with the analytical formulations as well as experimental investigations. Field studies have increased tremend studies have increased tremend studies have increased tremend studies have increased tremendously in the last decade. So far the agreement between the analytical and ously in the last decade. So far the agreement between the analytical and ously in the last decade. So far the agreement between the analytical and ously in the last decade. So far the agreement between the analytical and experimental results has been excellent and, therefore, has made it possible to augment a limited number of experimental results has been excellent and, therefore, has made it possible to augment a limited number of experimental results has been excellent and, therefore, has made it possible to augment a limited number of experimental results has been excellent and, therefore, has made it possible to augment a limited number of experimental tests with hundreds of analytical studies. Highlights of rese experimental tests with hundreds of analytical studies. Highlights of rese experimental tests with hundreds of analytical studies. Highlights of rese been presented in this review. Subjects discussed include: (1) Thin been presented in this review.

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Section: Folded Plate Methodsmentioning

confidence: 99%

Review of Elastic Analysis of Box Girder Bridges

Ezeokpube

2014

Nig. J. Tech.

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“…The function erf −1 refers to the inverse error function.

T_{i} = \frac{1}{4 D} \frac{c 2}{{((), \erf^{- 1} ((), 1 - \frac{C_{cr}}{C_{normals}}))}^{2}}

The initiation period is also modeled as such for prestressed structures by Refs. 14,15 among others.…”

Section: Modeling Degradation Due To Prestress Corrosionmentioning

confidence: 99%

“…Despite the fact that for posttensioned structures the strands are not in direct contact with the concrete, corrosion can still be an issue 14 . This can for example be ascribed to the incomplete filling of the ducts with grout.…”

Section: Assessment Of Posttensioned Structuresmentioning

confidence: 99%

“…Even though corrosion should be very rare if tendons are properly installed, according to Nguyen et al, 14 considering the practical process of construction, corrosion of tendons happens very often in practice since grouting is generally incomplete 58 . The incomplete grouting process leads to voids that contain water and oxygen along the length of the tendon, inducing depassivation of the tendon surface.…”

Section: Assessment Of Posttensioned Structuresmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of corroded prestressed and posttensioned concrete structures: A review

Vereecken

Botte

Lombaert

et al. 2021

Structural Concrete

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Prestressed structures are commonly used all over the world. They might be subjected to degradation, such as corrosion of the prestressing steel. This can influence the resistance of these structures and induce early failure. Hence, prediction of the corrosion level is important in the assessment of existing prestressed structures. For this purpose, the corrosion process and the accompanying influences on the structure should be modeled. For reinforced concrete (RC) structures, a lot of research and guidelines are available to model the corrosion process. Nevertheless, this corrosion process might differ for prestressed structures, due to the different structural composition, the different geometry of the strands or tendons compared with reinforcement bars, the presence of the prestress, and so on. Moreover, for posttensioned structures, initiation and propagation of corrosion are even more different from corrosion in RC structures, due to the location of the steel in ducts and the lack of direct contact with the surrounding concrete. In this paper, a state‐of‐the‐art on the assessment of prestressed and posttensioned structures subjected to corrosion is given based on a literature review. Different models for the corrosion process and their influence on the structure are discussed. Comparison is made between reinforced, prestressed, and posttensioned structures. Furthermore, some assessment procedures are indicated and relevant topics for further research are given.

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“…Darmawan and Stewart (2007) performed time-dependent reliability analysis of PSC girder bridges using the spatial maximum pit depth model and the stochastic finite-element model. Nguyen et al (2013) studied the reliability-based optimal design of PSC box girder bridges considering pitting corrosion while Guo et al (2016) evaluated the reliability of a PSC box girder bridge over the service life through the phased incremental static analysis. Tu et al (2019) evaluated time-dependent reliability and redundancy of corroded PSC girder bridges at material, component, and system levels.…”

Section: Introductionmentioning

confidence: 99%

Time-Dependent Reliability Assessment and Updating of Post-tensioned Concrete Box Girder Bridges Considering Traffic Environment and Corrosion

Kim

Song

2021

ASCE-ASME J. Risk Uncertainty Eng. Syst., Part A: Civ. Eng.

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In the reliability assessment of a bridge in operation with regards to its ultimate limit state, it should be noted that the strengths of members and effects of traffic load vary continuously over its lifespan due to the structural deterioration and changes of the traffic environment, respectively. Therefore, it is essential to collect relevant data, and incorporate the extracted information into a time-dependent reliability analysis. However, previous studies have not considered both traffic load effects and material deterioration models in timedependent reliability assessment for prestressed concrete (PSC) box girder bridges. To overcome this limitation and assess the reliability efficiently, this paper presents a comprehensive framework for time-dependent reliability assessment of post-tensioned concrete box girder bridges that can consider the traffic environment change and the corrosion in steel strands. The proposed framework employs probabilistic models and methods to estimate the flexural strengths and traffic load effects of a PSC box girder over time based on (1) corrosion-related data collected in the current practice of structure safety inspection, and (2) the traffic environment data obtained through weigh-in-motion (WIM) devices and traffic investigation. The time-dependent reliability is then computed using structural reliability methods based on the estimated strengths and load effects. As a numerical example, the time-dependent reliability of the PSC box girder of an actual cable-stayed bridge, Hwayang-Jobal Bridge in South Korea, is evaluated using the proposed framework. It is demonstrated that the framework can effectively assess the time-dependent reliability of a bridge in operation based on the uncertainties in the traffic environment and corrosion, and update it through data obtained by monitoring and inspection.

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Reliability-based optimisation design of post-tensioned concrete box girder bridges considering pitting corrosion attack

Cited by 8 publications

References 32 publications

Review of Elastic Analysis of Box Girder Bridges

Review of Elastic Analysis of Box Girder Bridges

Assessment of corroded prestressed and posttensioned concrete structures: A review

Time-Dependent Reliability Assessment and Updating of Post-tensioned Concrete Box Girder Bridges Considering Traffic Environment and Corrosion

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