THE RELIABILITY ANALYSIS OF EXISTING REINFORCED CONCRETE PILES IN PERMAFROST REGIONS

• Published in: International Journal for Computational Civil and Structural Engineering
• Main Authors: Vladimir S. Utkin, Leonid A. Sushev
• Format: Article in Journal/Newspaper
• Language: English; Russian
• Published: Publishing House ASV 2017
• Subjects: permafrost; foundation; reinforced concrete piles; compression; theory of possibility; evidence theory; buildings; construction; Materials of engineering and construction. Mechanics of materials; TA401-492
• Online Access: https://doi.org/10.22337/2587-9618-2017-13-2-64-72; https://doaj.org/article/06ec89399c7b40cc93abdde0639ab0ea

The article describes the general problem of safe operation of buildings and structures with the dynamics of permafrost in Russia and other countries. The global warming on Earth will lead to global disasters such as failures of buildings and structures. The main reason of these failures will be a reduction of bearing capacity and the reliability of foundations. It is necessary to organize the observations (monitoring) for the process of reducing the bearing capacity of foundations to prevent such accidents and reduce negative consequences, to development of preventive measures and operational methods for the piles reliability analysis. The main load-bearing elements of the foundation are reinforced concrete piles and frozen ground. Reinforced concrete piles have a tendency to decrease the bearing capacity and reliability of the upper (aerial) part and the part in the soil. The article discusses the problem of reliability analysis of existing reinforced concrete piles in upper part in permafrost regions by the reason of pile degradation in the contact zone of seasonal thawing and freezing soil. The evaluation of the probability of failure is important in itself, but also it important for the reliability of foundation: consisting of piles and frozen soil. Authors offers the methods for reliability analysis of upper part of reinforced concrete piles in the contact zone with seasonally thawed soil under different number of random variables (fuzzy variables) in the design mathematical model of a limit state by the strength criterion.