A study on the influence of the loading hysteresis upon the deformation properties of RC columns subjected to bi-axial cyclic loading

Abstract

In the present paper, the bi-axial cyclic loading test of RC columns with the different intervals of lateral hoop tie has been performed under the different loading histories. By comparing the results obtained from the uniaxial cyclic loading tests which had been so far performed by the authors, the influence of loading direction and interval of lateral hoop tie on the deformational performance, such as the lateral strength and ductility of RC columns, and on the buckling behavior of re-bar has been examined in details. Furthermore, the loading-path dependency has been discussed with the comparison of the buckling behavior of re-bars and damage inside the RC column induced by the different loading paths up to the same displacement level.