COLUMN BASE SYSTEM OF STEEL STRUCTURES EMPLOYING STEEL FIBER REINFORCED CEMENTITIOUS COMPOSITE AND DEFORMATION CHARACTERISTICS : Evaluation of joint-deformation based on mechanical model for shear failure

Abstract

The objective of this paper is to develop a joint-spring model at a simple column base in steel structures to identify the deformation characteristics of the framing system. The column base is encased by filling steel fiber reinforced cementitious composites. A mechanical model for the macroscopic shear failure of concrete is applied to the joint-configuration. Based on the numerical simulation by the mechanical model, a joint-spring model is developed and applied to the structural experiments under cyclic loading. It is concluded that the prediction with the joint-spring model gives relatively a good agreement with the deformation characteristics observed in the experiments.