Concrete structures under combined mechanical and environmental actions: Modelling of durability and reliability

Dita Vořechovská; Martina Šomodíková; Jan Podroužek; David Lehký; Břetislav Teplý

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자료유형: 학술저널

저자정보: Dita Vořechovská (Brno University of Technology) Martina Šomodíková (Brno University of Technology) Jan Podroužek (Brno University of Technology) David Lehký (Brno University of Technology) Břetislav Teplý (Brno University of Technology)

저널정보: 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.20 No.1

발행연도: 2017.1

수록면: 99 - 110 (12page)

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연구주제

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연구배경

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연구방법

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Service life assessments which do not include the synergy between mechanical and environmental loading are neglecting a factor that can have a significant impact on structural safety and durability assessment. The degradation of concrete structure is a result of the combined effect of environmental and mechanical factors. In order to make service life design realistic it is necessary to consider both of these factors acting simultaneously. This paper deals with the advanced modelling of concrete carbonation and chloride ingress into concrete using stochastic 1D and 2D models. Widely accepted models incorporated into the new fib Model Code 2010 are extended to include factors that reflect the coupled effects of mechanical and environmental loads on the durability and reliability of reinforced concrete structures. An example of cooling tower degradation by carbonation and an example of a bended reinforced concrete beam kept for several years in salt fog are numerically studied to show the capability of the stochastic approach. The modelled degradation measures are compared with experimental results, leading to good agreement.

참고문헌 (48)

참고문헌 신청

Andrade, C. / 2015 / Procedure for calculating the chloride diffusion coefficient and surface concentration from a profile having a maximum beyond the concrete surface / Mater. Structs. 48(4):863~869

Ang, A. H. S. / 1975 / Probability Concepts in Engineering Planning and Design, V. I, Basic Principles / John Wiley and Sons

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Audenauert, K. / 2009 / Influence of cracks on chloride penetration and corrosion initiation time / Proceedings of the 2nd International RILEM Workshop on Concrete Durability and Service Life Planning

Bažant, Z. P. / 1984 / Bayesian statistical prediction of concrete creep and shrinkage / ACI J. 81(4):319~330

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