Abstract
Influences of various factors which consist of restoreing force characteristics of reinforced concrete on earthquake response, especially on the maximum displacement are discussed using the NCL model given in the former report. Steady-state responses to sinusoidal excitation are preliminary stated. Factors of the restoreing force characteristics examined in this paper are expressions to modelize the skeleton curve, maximum shear force level, the area and the figure of normalized characteristic loop. Maximum shear force level and the area of normalized characteristic loop are most important facters which influence on the maximum displacement response. At the same time it is difficult to judge generally whether the response values are safety side or not if the model hysteretic curves do not resemle to those of real structures.
