A new processing method of ground acceleration data for fast and accurate evaluation of maximum seismic structural response

Abstract

A new processing method of ground acceleration data is proposed for the fast and accurate evaluation of the maximum seismic structural responses. The proposed method consists of a trimming method and a down-sampling method. The proposed trimming method is based on ground acceleration power and contains compensation procedures for the trimmed ground acceleration. The proposed down-sampling method effectively uses FIR filter, whose weight coefficients are derived from the correspondence between the responses under a triangular wave and the equivalent impulse input. It is demonstrated through numerical examples for response spectrums and a full-scale high-rise building model that the proposed method enables fast and accurate evaluation of the maximum seismic structural responses.