Definition of carrying capacity of concrete columns based on different deformation techniques
A. A. Shkurupiy, P. B. Mitrofanov
Poltava National Technical University named after Yuri Kondratyuk
Annotation: This article analyzes the methods of calculating the bearing capacity of reinforced concrete columns subjected to central and eccentric compression, based on the methodologies (deformation models) Eurocode 2, DBN V.2.6-98:2009 and the deformation model (DM) based on extreme strength criterion (ESC). Depending on the nature of the criterion of normal section strength, distinguish DM with empirical criterion of strength and DM with extreme (optimization) strength criterion. The most common are DM with empirical strength criterion, which also differ significantly, for example DM adopted standards Eurocode 2, DBN V.2.6-98:2009 and SP 63.1330.2012 (updated edition SNiP 52-01-2003). DM allows determining more precisely the boundary re-reinforcement strength or bearing capacity and parameters stress-strain state (SSS) concrete structures and their elements, and considering the nature of comprehesive diagrams for concrete and reinforcement. Existing DM, except DM with ESC need experimental determination of the ultimate strain compressed concrete parameters for the calculation of SSS in limiting stage. Shows comparative calculations of bearing capacity of reinforced concrete columns, calculated according to the methods mentioned above standarts, as well as the results determine their SSS limiting step procedure based on the ESC. It is proved, that the results of calculations of bearing capacity of compressed concrete columns based on DM with ESC more accurately coincide with the experimental data in comparison with the DM of the above standarts.
Keywords: concrete, reinforcement, strength, bearing capacity, reinforced concrete column, the maximum deformation, deformation model, extreme criterion, normal section.
Pages: 49-56.
Link for citation: Shkurupiy, A. A.; Mitrofanov, P. B. Definition of carrying capacity of concrete columns based on different deformation techniques. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2014. – Vol. 10, N 1. – Р. 49-56. – URL: https://donnasa.ru/publish_house/journals/spgs/2014-1/06_shkurupiy_mitrofanov.pdf (date of access: 16.09.2024). (in Russian)
Vol. 10, N 1 (2014)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture