Karapetyan S. Strength and stability eccentrically loaded reinforce-concrete bars under nmultiple repeated loadings

The dissertation is devoted experimental and theoretical research of work of eccentrically of reinforce-concrete bars at the unmultiple repeated loadings of high levels and development of their calculation method. It is set that the unmultiple repeated loadings of high levels result in the increase of deformations of concrete and bendings due to the remaining increase of initial excentricity of appendix of force, and also to diminishing of height of the compressed zone of concrete, module of resiliency of concrete and bearing strength of chimneys. Differential equalizations are got for determination of dependence between tensions and deformations of concrete of eccentric of reinforce-concrete bars.The developed method of calculation eccentrically the compressed reinforce-concrete bars in the conditions of the unmultiple repeated loadings and mathematical finite-element models of estimation of bearing capacity of these bars have been worked out. Keywords: reinforce-concrete стойка|стойка|, eccentricallyloaded, unmultiple repeated loading, durability, firmness, deformation, finite-element models.