DEVELOPMENT OF EMBEDDED MESNAGER HINGE RC STRUCTURE CAPABLE OF PREDICTING BEHAVIOR QUALITATIVELY FOR BEYOND DESIGN BASIS EVENTS

In this study, we propose a RC structure reinforced by Mesnager hinge and spiral reinforcements, and performed cyclic loading test. This structure has an insensitive structural system that keeps the uncertainty of the behavior of the column to minimum even when earthquake beyond design basis occurred. As a result, the RC column embedded with Mesnager hinge suppressed axial deformation and shear deformation of the base of column and formed a hinge structure at the base of the column even when large deformation beyond design basis occurred. Hence, it was found that the RC column embedded with Mesnager hinge has the structure that declines the uncertainty of the behavior because of the hinge mechanism of Mesnager hinge as the damage of the column become serious. Therefore, it is possible to predict the behavior of columns, and this structure can be said to be one approach toward improving anti-catastrophe.