2013 Volume 38 Issue 2 Pages 35-49
Damping measurements on a 200m-high steel office building show an increase and then decrease of damping with amplitude. But current damping predictors for such a building does not account for the decreasing part. There is thus a big discrepancy between the predictor model and actual conditions that implicate unreliability in wind-resistant design. Meanwhile, damping is said to be based on stick-slip phenomenon. This study shows results of theoretical derivations and nonlinear time-history analysis of a one-degree-of-freedom system model with varying stick-slip components. Comparisons of damping estimates are then made between current damping predictor models and the stick-slip damping model.
