PLASTIC COLLAPSE BEHAVIOR OF MULTISTORY MULTIBAY PLANAR FRAMES SUBJECTED TO REPEATED HORIZONTAL LOADING : Part II Verification of the symmetry limit theory and clarification of collapse behavior by means of numerical response analysis

Abstract

Clarification of the collapse behavior of building frames under repeated horizontal loading is necessary for developing a more rational and reliable method of earthquake resistance design. In the previous part of this paper, it has been predicted by applying the symmetry limit theory that an unknown type of overall collapse behavior is possible to occur in multistory multibay planar frames subjected to repeated horizontal top displacement. In the present part of this paper, the numerical response analysis of the frames is performed to verify the theoretical predictions. The existence of the symmetry limits is confirmed and the features of the deterioration process characterized by cyclic growth of a bow-like-shaped overall mode of frame deflection is revealed.