ESTIMATE OF RELIABILITY FOR REINFORCED-CONCRETE OFF-CENTRE COMPRESSIVE PILLARS DURING EFFECT OF LOW-CYCLE LOADS WITH ALTERNATING ECCENTRICITIES

Abstract

The applicable normative documents for defining of bearing capacity, cracking resistance, deformation, and reliability nohow take into account the behaviour of off-centre compressive elements, which are in conditions of low-cycle alternating loads, during exploitation. However, as the results of experiments showed, the behaviour of off-centre compressive elements during effect of low-cycle alternating loads is distinctly different from behaviour of elements, that experience the effect of univalent static loads. The low-cycle alternating loads influence on bearing capacity, cracking resistance, and deformability that ought to be taken into account during design of mentioned constructions. The accounting of this factor characterizes the real behaviour of such construction and allows to estimate straightly the off-centre compressive elements. Using the experimental and theoretical data, the numerical example of estimate determination for reliability of reinforced-concrete off-centre compressive pillars, which experience the effect of low-cycle alternating loads, was made. During estimating the reliability of pillars, it was used the existed methods of calculation for engineer construction during the effects of single-valued static loads with adherence to applicable normative documents.