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This study is to propose a method to evaluate cumulative damage of steel buildings under plural strong seismic actions. A series of time history analyses on a one degree-of-freedom non-linear system are conducted for three strong ground motions simulated for Nagoya district. Comparing the results of the analyses, a method to predict the maximum and cumulative response values for successive action of the three motions from those of one single motion is proposed. Time history response analyses of thirty (30) storied steel building models with and without response control systems are conducted to verify the proposed method. In addition, seismic performances of these model buildings are evaluated based on “JSCA Performance Menu”. Finally, the method and procedure to evaluate seismic performances of buildings for strong motions that act on the buildings one after one are proposed.

A PROPOSAL FOR CUMULATIVE DAMAGE EVALUATION METHOD FOR LONGEVITY LIFE STEEL BUILDINGS CONSIDERING PLURAL STRONG GROUND MOTIONS