OPTIMUM STRENGTH DISTRIBUTION OF STRUCTURAL MEMBERS IN STEEL FRAMES

Abstract

The deformation concentration into a relatively weak story often causes the collapse of the structure and must be carefully prevented in design practice. In this paper, we proposed a simple method to modify the member strengths in order to make the story drift angles uniform over the building height. This method is based on the optimum story shear force coefficient proposed by us in a previous paper. The applicability of the method was confirmed by numerical results of a nonlinear earthquake response analysis for four example frames.