Dynamic Mechanical Model Identification and Seismic Response Prediction for a Full-Scale Five-Story Steel Structure with Oil Dampers

Abstract

The difference between the vibration control performance assumed in the structural design and the actual performance is not always minor. In order to predict the seismic response of buildings against future earthquakes more accurately, it is desirable to reduce this difference. In this paper, a dynamic mechanical model identification is performed on a shaking table test for a full-scale five-story steel-frame building with oil dampers, and the accuracy of the response prediction is discussed. As a result, the identified values of the damper characteristics differ from one excitation level to another, and it is not easy to mention in terms of evaluating the damping member's characteristics. However, the applicability is suggested when estimating responses at the floor level. In particular, a significant difference from the initial model (before identification) is confirmed for the maximum story drift, demonstrating that the proposed identification process improves response estimation accuracy.