Reliability-Based Multiobjective Design Optimization of Reinforced Concrete Bridges Considering Corrosion Effect

Sajedi, Siavash; Huang, Qindan; Gandomi, Amir H.; Kiani, Behnam

doi:10.1061/ajrua6.0000896

Cited by 14 publications

(7 citation statements)

References 45 publications

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“…The corrosion of the strands initiated and propagated in external tendons due to voids in the grout, water penetration including chloride through an air vent, bleeding, and material segregation of grout (SMFMC 2017). It is widely known that the corrosion phenomenon in strands is a major cause of the reduction in the load carrying capacity and serviceability of PSC girder bridges (Nakamura and Suzumura 2013;Lau and Lasa 2013;Sajedi et al 2017). Similar incidents have occurred in many areas of the world, including France, the UK, the United States, and Japan (Cullington et al 2001;fib 2006;SMFMC 2017;Yoo et al 2018).…”

Section: Introductionmentioning

confidence: 91%

“…In the perspective of traffic loads, Kim et al (2016) assessed the reliability of the highway PSC girder bridge considering traffic load models and corrosive environments. In addition, many other studies have been carried out to calculate the strength and reliability of general bridges through probabilistic modeling and analysis of other deterioration processes, corrosion of reinforcement bars, and load history (Enright and Frangopol 1998;Stewart 2010;Ma et al 2015;Li et al 2015;Sajedi et al 2017;Wang et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 91%

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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“…Several domains of science, engineering, and industry have defined its application in the form of a tactic between two or more reciprocal optimal decision-makings which need equilibrium. It is rarely claimed that a single solution can simultaneously optimize each objective function of the multiobjective optimization problems [25][26][27][28][29][30][31][32].…”

Section: E Moeda-wsm Multiobjective Optimizationmentioning

confidence: 99%

“…e prediction models for compressive strength (CS) and electrical resistance (ER) of concrete are then developed by applying the response surface method [14][15][16] based on two parameters of the percentage of recycled coarse aggregate and recycled fine aggregate. In the end, these models are applied as optimization problem constraints to reach reliable values of RA for a green concrete in a probabilistic optimization procedure by coupling two algorithms, namely, weighted simulation method and estimate distribution algorithm (MOEDA − WSM) in a multiobjective mode [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. In short, the results of analyses indicate different ranges of using RA for environmental conditions with different corrosion risk levels (low, medium, and high) and different safety levels or target reliability index (β t ).…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Reliability‐Based Design Optimization of Recycled Aggregates Used in Corrosive Environment Based on Response Surface Modelling

Dehvari

Khazaei

Sohrabi

et al. 2022

Advances in Civil Engineering

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In this study, durability properties of concrete samples including rapid chloride migration and electrical resistance as corrosion evaluation indicators were tested. The effects of some environmental parameters including humidity percentage, temperature, and chloride concentration were also examined on concrete electrical resistance. The prediction models for mechanical and durability parameters of concrete were obtained using the response surface method. These models were then evaluated using a metaheuristic optimization algorithm coupled with a simple and fast usability new method of reliability evaluation. Eventually, the probabilistic optimal values of using recycled aggregates were calculated for achieving environmentally friendly concrete. Probabilistic multiobjective optimization results revealed that, in an environment with humidity of 70%, temperature of 23°C, and chloride ion concentrations of 3%, 5%, and 8%, use of recycled aggregates for above different chloride ion concentrations was limited to (33.56%, 13.23%), (32.14%, 5.56%), and (13.23%, 2.86%), recycled coarse and fine aggregates, respectively. Furthermore, optimization procedures were performed for the environment or precontaminant recycled aggregate with the chloride concentration of 10%, but the analysis procedure did not converge to an optimum design point.

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“…In recent decades, these structures rapidly improved and resulted in obvious economic benefits (Chafaie and Portier, 2004). However, the durability of composite bridges is facing significant challenges, such as fatigue under vehicle induced vibration (Zhang et al, 2016), concrete carbonization (Tesfamariam et al, 2018), and chloride-induced corrosion of the steel rebar (Marsavina et al, 2009;OŽbolt et al, 2010;Sajedi et al, 2016). Many studies have attempted to improve the serviceability of composite beams.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Bending Behavior of Reinforced Ultra-High-Performance Concrete Decks

Wang

Deng

Zhao

et al. 2019

Front. Built Environ.

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Ultra-high-performance Concrete (UHPC) has a wide range of potential civil engineering applications, owing to its excellent mechanical properties and durability. To investigate the bending behavior of reinforced UHPC components, nine reinforced UHPC deck specimens were tested by conducting four-point bending experiments. The crack development, load-carrying capacity, and strain distribution were observed, and the tests results revealed that the introduction of steel fibers into UHPC obviously improved the structure's toughness and crack resistance. Based on the tests results, a theoretical formula was derived for calculating the bending stiffness of the UHPC decks during the entire loading process, which was divided into three representative stages based on the initial cracking and yielding. The results for the load-deflection response obtained by the formulas are in good agreement with the experimental results.

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Reliability-Based Multiobjective Design Optimization of Reinforced Concrete Bridges Considering Corrosion Effect

Cited by 14 publications

References 45 publications

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

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

Multiobjective Reliability‐Based Design Optimization of Recycled Aggregates Used in Corrosive Environment Based on Response Surface Modelling

Experimental Investigation of Bending Behavior of Reinforced Ultra-High-Performance Concrete Decks

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