Compression Field Modeling of Reinforced Concrete Subjected to Reversed Loading Formulation

The need for improved methods of analysis and modeling
of concrete subjected to reversed loading has been brought to
the fore by the seismic shear wall competition conducted by
the Nuclear Power Engineering Corporation of Japan.
1
The
results indicate that a method for predicting the peak strength
of structural walls is not well established. More important, in
the case of seismic analysis, was the apparent inability to
accurately predict structure ductility. Therefore, the state of
the art in analytical modeling of concrete subjected to general
loading conditions requires improvement if the seismic response
and ultimate strength of structures are to be evaluated with
sufficient confidence.
This paper presents a unified approach to constitutive
modeling of reinforced concrete that can be implemented
into finite element analysis procedures to provide accurate
simulations of concrete structures subjected to reversed
loading. Improved analysis and design can be achieved by
modeling the main features of the hysteresis behavior of
concrete and by addressing concrete in tension.
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