MAXIMUM DISPLACEMENT RESPONSE ESTIMATION FROM ACCERELATION RECORD FOR RANDOM EXCITATION

Abstract

  Maximum displacement under actual loading is an essential indicator for performance evaluation of existing structures. However, direct measeurement of displacement requires fixed reference point, and its implementation in actual civil structures are generally difficult and costly, while acceleration can readily be measured for wide variety of situations. Hence, fast evaluation method for maximum displacement response from acceleration response based on random vibration theory is proposed in this paper. First, arithmetric equations to express relationship between response acceleration and response displacement is derived from response statistics in random vibration theory. Then, the accuracy of the method is evaluated through numerical simulations and actual measurement data at the Akashi-Kaikyo Bridge, and its applicability is verified.