Using of deformation-strength model at calculation of normal sections of concrete and reinforced concrete elements by the first group of limited states
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2017, Vol 1, Issue 66
Abstract
This work spotlights the main dependences, conditions and hypotheses of reinforced concrete structures calculation by the first group of limited states, i. e. at determining the strength of the normal cross sections of these elements at their bending, tension or compression, based on deformation approach. Particularly, the authors give calculated expressions for determination of reinforced concrete elements ultimate forces at the flat bending with double or multi reinforcement using deformation method in sufficient detail and also authors give formulas for finding the limited and critical stresses and strain of concrete and reinforcement structure. As noted in the article, deformation of reinforcement in the ultimate stage can occur in three different schemes, which in turn affects on final value of cross section strength. Material is supplied with two figures that reflect change nature of strain in averaged cross section of reinforced concrete element and show the stress-strain state of reinforced concrete element with double reinforcement. As mentioned in conclusions, the application of strain approach to calculation of reinforced concrete structures bearing capacity uniquely gives more accurate and reasonable value of the specified characteristic by the means of clear and accurate understanding of deformation as concrete and reinforcement by the way of real stress-strain state materials diagrams using.
Authors and Affiliations
V. M. Karpiuk, A. I. Kostiuk, Yu. A. Somina, D. S. Danilenko
Keywords
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