Predictive Models for the Median and Variability of Building Period and Damping
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Volume 135, Issue 5
Abstract
There are two goals in this paper: (1) the presentation of a comprehensive database of over 4,000 fundamental period and damping measurements from nearly 1,000 buildings; and (2) the derivation of predictive models for period and damping. The modeling approach presented in the companion paper, which accounts for the statistically nonconforming properties that characterize building data, is used herein to derive models which include two intrinsic sources of variability: that associated with multiple measurements from different excitations on the same building and variability between buildings that are nominally identical. The period models are in general agreement with those currently used, with model parameters that are in terms of height, material, and lateral force resisting system. The damping models show a decrease in damping as building height increases and, for steel and reinforced structures, a twofold increase in damping for earthquake excitations as opposed to other, lower amplitude excitations.
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Acknowledgments
This material is based upon work partially supported by the National Science Foundation at Johns Hopkins University under Grant No. NSFDMI-0087032. This research support is gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 135 • Issue 5 • May 2009
Pages: 576 - 586
Copyright
© 2009 ASCE.
History
Received: Feb 1, 2007
Accepted: Nov 5, 2008
Published online: May 1, 2009
Published in print: May 2009
Notes
Note. Associate Editor: Sankaran Mahadevan
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