Influence of variability of deformation characteristics of concrete on the reliability of compressed reinforced concrete structures

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Resumo

The statistical patterns of the distribution of the bearing capacity of compressed short reinforced concrete elements at different levels of symmetrical reinforcement with A500 class reinforcement are analyzed. A numerical modeling methodology is used with an estimate of the distribution parameters of 5,000 pseudo-realizations under the assumption of their normal distribution. The ratio of the element strength values of the required (99.86%) security and calculated according to regulatory conditions is considered. Their discrepancy has been established at high levels of reinforcement, the need to take into account the variability of the ultimate deformations of concrete as a criterion parameter of the design resistance of reinforcement to compression. It is recommended to conduct additional research in this direction.

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Sobre autores

V. Popov

Saint-Petersburg State University of Architecture and Civil Engineering

Autor responsável pela correspondência
Email: popov_vladimir_m@mail.ru

Candidate of Sciences (Engineering), Docent

Rússia, 4, 2nd Krasnoarmeyskaya Street, Saint Petersburg 190005

B. Pinus

Irkutsk National Research Technical University

Email: pinus@istu.edu

Doctor of Sciences (Engineering), Professor

Rússia, 83, Lermnontov Street, Irkutsk, 664074

M. Plyusnin

Kostroma State Agricultural Academy

Email: apraiser3@yandex.ru

Candidate of Sciences (Engineering), Docent

Rússia, 34, Uchebny gorodok Street, Karavaevo settlement, 156530

L. Kondratyeva

Saint-Petersburg State University of Architecture and Civil Engineering

Email: kondrateva.l.n@lan.spbgasu.ru

Doctor of Sciences (Engineering), Professor

Rússia, 4, 2nd Krasnoarmeyskaya Street, Saint Petersburg 190005

Bibliografia

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2. Fig. 1. Probability density curves of bearing capacity distributions

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3. Fig. 2. Calculated values of bearing capacity

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4. Fig. 3. Dependence of the coefficient of bearing capacity on the concrete class and the percentage of longitudinal reinforcement

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