THE ANALYTICAL CORE MODEL FORMATION OF THE NONLINEAR PROBLEM BOND ARMATURE WITH CONCRETE
Abstract
It is proposed a nonlinear analytical model of the pivotal bond between the reinforcement
and the concrete. It is established, that at the design of this process it is important to reach the
level of engineering visibleness of the used dependences, dropping not essential features, while
at the same time to get a reasonably accurate solution. In such search authors were stopped for
the analytical model of nonlinear task of bond armature with a concrete, allowing to take into
account elastic-plastic work of concrete, and also non-linearity of contact armature with a
concrete. It is revealed that analytically the rod model of bond reinforced concrete bar is
designed by the system, consisting of four equalizations, two from which are differential
equalizations of first order. Nonlinear contact interaction of two materials is approximately
examined as mutual relative displacements of armature and concrete. It is shown that the
proposed model undoubtedly requires experimental confirmation by testing and numeral design
more high level and degrees of working out in detail.
Keywords: analytical model, bond armature with concrete, reinforced concrete
constructions, physical nonlinearity, mutual relative displacement of reinforcement and concrete.
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