Damage Modeling and Damage Limit State Criterion for Wood-Frame Buildings Subjected to Seismic Loads
Publication: Journal of Structural Engineering
Volume 137, Issue 1
Abstract
Current research trends in residential construction focus on the development of performance-based design methodologies for wood structures. As one key prerequisite to the implementation of such design concept, the performance objectives and their corresponding limit state criteria must be properly defined first. So far, the displacement-based limit state criterion, such as the one proposed in ASCE 41, is the only type of standard available for wood structures. In this paper, damage index-based limit state criterion is proposed for wood-frame buildings. The Park-Ang damage model is used to estimate damage to the wood structures caused by seismic loads. An incremental dynamic analysis-based approach is developed to calibrate the damage model parameter for wood shear wall. To predict the potential damage of wood-frame buildings under future earthquakes, the relationship between calculated damage index and observed building damage is established and validated by experimental test data. The results of this research show that displacement alone may not be a reliable indicator for seismic performance of wood structures and damage index-based criterion allows a more realistic performance evaluation.
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Acknowledgments
The writers would like to thank Dr. Phillip Paevere of CSIRO for providing the technical details and results of CSIRO whole house test.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 137 • Issue 1 • January 2011
Pages: 41 - 48
Copyright
© 2011 ASCE.
History
Received: Oct 15, 2009
Accepted: Jul 10, 2010
Published online: Dec 15, 2010
Published in print: Jan 2011
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