METHOD FOR UNIFORMIZING MAXIMUM INTER-STORY DRIFT ANGLE OF MULTIPLE SEISMIC RESPONSES IN ELASTO-PLASTIC EQUIVALENT SHEAR-SPRNG MODEL AND APPLICATION TO ELASTO-PLASTIC DAMPER PLACEMENT METHOD

Abstract

In this paper, a method of uniform inter-story drift angle of elasto-plastic equivalent shear-spring model in seismic response is discussed. The main contents are as follows. (1) A method to achieve a uniform inter-story drift angle response that envelops the maximum response values of multiple seismic motions is shown by setting the primary mode form, updating and adjusting the stiffness and the skeleton curve, and repeating the process. (2) Applying the response uniformity method for elasto-plastic buildings, a method of placing elasto-plastic dampers in each story with the goal of uniform response is proposed. Good results are obtained in time history analyses, confirming effectiveness of these methods.