Issue |
MATEC Web Conf.
Volume 230, 2018
7th International Scientific Conference “Reliability and Durability of Railway Transport Engineering Structures and Buildings” (Transbud-2018)
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Article Number | 02025 | |
Number of page(s) | 8 | |
Section | Structures, Buildings and Facilities | |
DOI | https://doi.org/10.1051/matecconf/201823002025 | |
Published online | 16 November 2018 |
The improved technique for calculating the concrete elements strength under local compression
Poltava National Technical Yuri Kondratyuk University, Pershotravneviy sq., 24, Poltava, 36011, Ukraine
* Corresponding author: o.o.dovzhenko@gmail.com
The central one-sided concrete element crushing is considered when the loading platform width is less than the element width (in three-dimensional stress state conditions). A variational method in the concrete plasticity theory, which is developed in the Poltava National Technical Yuri Kondratyuk University, is proposed to calculate the strength. The formula for determining the ultimate load is based on the destruction kinematics, which is observed in the experiments, and takes into account the loading platform size ratio and the element, both concrete strength characteristics, the frictional forces between the support surface and the element. The calculation dependence is rather precise during the cubes central crushing when the element height ratio and the loading platform greater than 4. With other geometric parameters the kinematic scheme changes, which must be taken into account when deriving the formulas for calculating the strength by the variational method. The proposed method allows considering all possible calculation schemes and determining its application limits.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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