The improved technique for calculating the concrete elements strength under local compression
| Autor: | Iryna Kuznietsova, Oksana Dovzhenko, Dmytro Usenko, Volodymyr Pohribnyi |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry lcsh:TA1-2040 021105 building & construction 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Structural engineering business Compression (physics) lcsh:Engineering (General). Civil engineering (General) 0201 civil engineering |
| Zdroj: | MATEC Web of Conferences, Vol 230, p 02025 (2018) |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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