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The Structural Engineer, Volume 65, Issue 15, 1987
A mathematical model, based on the physical properties of nominally ‘pinned’ column-bases and intended to describe the moment-rotation characteristics for given eccentricity of axial load, is presented. The model uses three main parameters to describe the characteristic: elastic stiffness, strain hardening stiffness, and plastic moment capacity. In addition, an empirically determined ‘shape’ factor allows for the transition from elastic to inelastic behaviour. K.K. Hon and Professor R.E. Melchers
Dr. P. S. Chana (Cement & Concrete Association): It is encouraging to see a paper which aims to clarify the fundamental behaviour of reinforced concrete T-beams in shear. Owing to the difficult nature of the problem, research in this area has been largely restricted to empirical studies. I would like to make some comments regarding some of the basic assumptions and the significance of the results on present design methods.