Time-dependent probabilistic capacity degradation assessment of prestressed concrete piles in marine environment

Schmuhl, Daniel T; Loos, Sabine; Hur, Jae Kyun; Shafieezadeh, Abdollah

doi:10.1080/15732479.2018.1442483

Cited by 11 publications

(6 citation statements)

References 18 publications

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“…Allaix et al [60] and Schmuhl et al [88] used a similar one-dimensional displacement-based finite element model, with a beam element representing the concrete, and a truss element, representing the reinforcement, the first study to analyze RC beams and the second one for PSC pile. Tu et al [16] adopted a grillage model to analyze a multi-girder prestressed concrete bridge.…”

Section: Structural Modelingmentioning

confidence: 99%

Probabilistic assessment of corroded concrete structures – systematic literature review

Moreira,

Bittencourt,

Carvalho

et al. 2024

Rev. IBRACON Estrut. Mater.

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The evaluation of service conditions of concrete structures has still been carried out through implicit knowledge based on the expertise and knowledge of inspectors, who classify structures based on subjective criteria. The main degradation mechanism of reinforced and prestressed concrete structures is the corrosion of steel reinforcements, with expressive maintenance and repair costs. The phenomenon of corrosion in concrete structures has a complex behavior and presents several uncertainties, and deterministic analyzes can produce very conservative responses, which can unnecessarily increase maintenance costs, thus justifying probabilistic approaches. This article then presents a systematic literature review of articles that address the evaluation of concrete structures under reinforcement corrosion using a probabilistic approach. In this regard, 94 journal articles obtained through an appropriate review protocol were reviewed. Thus, the summary of the main proposed methodologies was carried out, as well as the identification of research gaps on the subject.

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Section: Structural Modelingmentioning

confidence: 99%

Probabilistic assessment of corroded concrete structures – systematic literature review

Moreira,

Bittencourt,

Carvalho

et al. 2024

Rev. IBRACON Estrut. Mater.

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“…The seismic response and service life assessment of corroded pile foundation structures have been extensively studied by researchers [14][15][16][17][18]. For instance, Seung et al [14] predicted the service life of corroded RC columns based on diffusion coefficients of chloride.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Seung et al [14] predicted the service life of corroded RC columns based on diffusion coefficients of chloride. Schmuhl et al [15] proposed a residual strength model suitable for corroded RC pile foundations and effectively simulated the cracking failure of the foundation under reinforcement corrosion. Mirzaeefard et al [16] obtained a time-dependent brittleness curve using incremental dynamic analysis and concluded that seawater erosion considerably exacerbated the fragility of pile foundations.…”

Section: Introductionmentioning

confidence: 99%

Seismic Fragility Analysis of Steel Pipe Pile Wharves with Random Pitting Corrosion

Zhao,

Liao,

et al. 2023

Buildings

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This paper investigates the seismic damage behavior of steel pipe pile wharves after pitting corrosion. The seismic intensity is treated as random, and a probabilistic strength model for randomly pitting corroded steel is utilized to assess the seismic response of a typical steel pipe pile wharf. By analyzing the internal force response of each pile and the deformation response of the deck and soil slope, the process of seismic failure in steel pipe pile wharves with different pitting corrosion ratios is investigated. The results demonstrate that pitting corrosion amplifies the internal force within the steel pipe piles, leading to more severe seismic damage. Additionally, probabilistic seismic demand functions are established for the most vulnerable row of piles affected by random pitting corrosion, and the seismic fragility of the pipe pile wharves considering different pitting corrosion ratios is evaluated. These findings provide valuable insights for the design and strengthening of steel pipe pile wharves.

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“…These are then used to calculate the forces and rigidities along the length of structural members using finite element interpolation functions that satisfy equilibrium and compatibility conditions [17]. However, only a few studies [18,19] have employed FB-FEA for the nonlinear seismic analysis of corroded PSWs, as numerical corrosion simulations are time-consuming and require high-performance software. Schmuhl et al [18] investigated the effect of chloride corrosion on the lateral force capacity and ductility of PSWs using FB-FEA in the OpenSees platform [20].…”

Section: Introductionmentioning

confidence: 99%

“…However, only a few studies [18,19] have employed FB-FEA for the nonlinear seismic analysis of corroded PSWs, as numerical corrosion simulations are time-consuming and require high-performance software. Schmuhl et al [18] investigated the effect of chloride corrosion on the lateral force capacity and ductility of PSWs using FB-FEA in the OpenSees platform [20]. The results indicated that the failure frequency of concrete piles aged between 25 and 75 years increased significantly due to stress corrosion cracking and brittle fracture.…”

Section: Introductionmentioning

confidence: 99%

Simplified Method for Nonlinear Seismic Response Analysis of Corroded Pile-Supported Wharf

Refani,

Nagao

2023

Applied Sciences

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Fiber-based finite element analysis (FB-FEA) has been widely recognized for its ability to reproduce experimental results and is also a reliable method for evaluating the nonlinear seismic response of pile-supported wharves (PSWs). Design practice often employs frame analysis (FA) due to its easy implementation. To precisely reproduce the nonlinear seismic response of PSW using FA, it is necessary to configure mechanical properties such as the hinge property correctly. However, it is unclear whether the hinge properties proposed in previous studies can be applied to PSWs with spun piles. In this study, a novel FA method was developed to investigate the nonlinear seismic response of PSWs with corroded spun piles considering PC bar area reduction, deteriorated material properties, the bending stiffness reduction factor, and the moment–curvature relationship of the spun pile. The nonlinear seismic response of corroded PSWs was determined by performing pushover analysis using three methods: FA using the method of the previous study (FA-1), the proposed FA method (FA-2), and FB-FEA. As regards PSW foundations, vertical pile and batter pile configurations were considered. The pushover analysis results were compared in terms of several parameters, such as the natural period, plastic hinge formation, and load capacity of the corroded PSWs. The FA-2 results agreed very well with the FB-FEA results, while the FA-1 results were less precise with respect to the natural periods and load capacities of corroded PSWs. The results indicated that the bending stiffness reduction factor, moment–curvature relationship, and axial load–bending moment (P–M) capacity of the corroded spun piles should be appropriately defined. Corrosion had greater negative impacts on the compressive axial load and bending moment capacities of the spun pile than on its tensile axial load capacity.

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Time-dependent probabilistic capacity degradation assessment of prestressed concrete piles in marine environment

Cited by 11 publications

References 18 publications

Probabilistic assessment of corroded concrete structures – systematic literature review

Probabilistic assessment of corroded concrete structures – systematic literature review

Seismic Fragility Analysis of Steel Pipe Pile Wharves with Random Pitting Corrosion

Simplified Method for Nonlinear Seismic Response Analysis of Corroded Pile-Supported Wharf

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