Time-variant finite element reliability analysis – application to the durability of cooling towers

Sudret, Bruno; Defaux, Gilles; Pendola, Maurice

doi:10.1016/j.strusafe.2004.05.001

Cited by 31 publications

(14 citation statements)

References 21 publications

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“…This highlights the benefits that can be achieved by using significant quantities of GGBS, but also the sensitivity of the GGBS hydration reactions at high replacement levels. Effective chloride diffusion coefficient, based on [27] Varies, based on data from Table 6 0.2 Normal CO 2 concentration, based on [32] 0.05% 0.25 Lognormal Effective CO 2 diffusion coefficient, based on [27] Varies, based on data from Table 6 0.2 Normal…”

Section: Discussionmentioning

confidence: 99%

Probability-based assessment of the durability characteristics of concretes manufactured using CEM II and GGBS binders

McNally

Sheils

2012

Construction and Building Materials

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Section: Discussionmentioning

confidence: 99%

Probability-based assessment of the durability characteristics of concretes manufactured using CEM II and GGBS binders

McNally

Sheils

2012

Construction and Building Materials

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“…The design concept for the upper graph with two distributions represents the service life period design concept, while the lower graph with one distribution represents the lifetime design concept [1]. Recently, many research approaches have been proposed that include spatial variation through random field generation of design parameters such as the diffusion coefficient and surface chloride content [57][58][59][60]; however, these techniques have not been attempted for actual durability design.…”

Section: Source Of Uncertaintymentioning

confidence: 99%

Current Trends of Durability Design and Government Support in South Korea: Chloride Attack

Kwon

2017

Sustainability

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Abstract:Concrete is considered to be a construction material with high durability and excellent fire resistance. However, degradation occurs, leading to structural safety problems and expensive maintenance costs. Currently, durability design and its concepts are provided in the concrete specifications and structural design codes in many countries, but they vary in terms of the design methodologies and users' demands. Reinforced concrete (RC) structures based on a reasonable durability design with a quantitative procedure can prevent unnecessary maintenance expenses and reduce environmental loads. This paper presents the current trends of durability design in South Korea and government support for infrastructure. In this work, the two representative durability design philosophies (deterministic and probabilistic approaches) are briefly summarized, and the current guidelines and related requirements for durability design in several countries are investigated. Durability design is now changing from simple material requirement control to performance-based design with quantitative parameters considering various exposure classifications and evaluation processes. RC structures based on reasonable durability design can make a great contribution to reducing maintenance costs and environmental effects like CO 2 emissions.

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“…(8) can be calculated in the range of 95~145 kg/m 3 when cement content varies within 300~450 kg/m 3 . Carbonatable material of 100 kg/m 3 and 0.2 of COV in Table 2 is reasonable assumption for material properties (KCI, 2001;Sudret et al, 2005). Random variables regarding cover depth are assumed based on the field investigation results (Kwon et al, 2007;KCI, 2001).…”

Section: Identification Of Random Variablesmentioning

confidence: 99%

“…During past years, substantial efforts have been made in applying various probabilistic methods to the service life prediction and durability assessment of RC structures (Khatri and Sirivivatnanon, 2004;Gulikers, 2006;Stewart and Rosowsky, 2004;Sudret et al, 2005;CEB, 1997;Duprat and Sellier, 2006;Kong et al, 2002;Rovnanik, 2006). Concrete degradation models considering chloride penetration inducing corrosion have already been studied with reliability concepts by introducing uncertainties like concrete properties, environmental parameters, and geometry.…”

Section: Introductionmentioning

confidence: 99%

“…The generated sample functions have to accurately describe the probabilistic characteristics of the stochastic processes. For a target deterioration, many researches are preformed on chloride induced-steel corrosion considering random field simulation (Stewart and Rosowsky, 2004;Stewart and Mullard, 2006;Sudret et al, 2005), however, very few studies are focused on carbonation. In this study, a computational model for predicting stochastic service life considering the spatial variation of material, geometrical properties of the RC structures, and environmental factors has been developed through Monte Carlo simulation method.…”

Section: Introductionmentioning

confidence: 99%

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Stochastic model for service life prediction of RC structures exposed to carbonation using random field simulation

Na¹,

Kwon

Chaudhuri

et al. 2011

KSCE J Civ Eng

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Deterioration of Reinforced Concrete (RC) structures is related to the corrosion of reinforcement since it propagates to structural degradation. In urban or underground conditions, carbonation-initiated corrosion in reinforcement is reported. In this paper, a stochastic model for predicting service life of RC structure subjected to carbonation is proposed through Monte Carlo simulation method with the spatial variation of material, geometric properties of RC structures, and environmental factors. This model can take into account the spatial variation of uncertain parameters by generating non-Gaussian and multi-dimensional random fields using spectral representation method. To estimate the temporal variation of the probability to exceed a pre-defined serviceability, timedependent reliability analyses are performed. Spatial reliability indicators such as the mean and standard deviation of the area are calculated through 20-sample with 4-variable full-factorial realization. It is evaluated that there exists large variation in predicted service life and quality control for concrete is required during construction for the service life. Based on these results, design and construction considerations are provided.

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Time-variant finite element reliability analysis – application to the durability of cooling towers

Cited by 31 publications

References 21 publications

Probability-based assessment of the durability characteristics of concretes manufactured using CEM II and GGBS binders

Probability-based assessment of the durability characteristics of concretes manufactured using CEM II and GGBS binders

Current Trends of Durability Design and Government Support in South Korea: Chloride Attack

Stochastic model for service life prediction of RC structures exposed to carbonation using random field simulation

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