System-Level Seismic Damage Assessment Methodology for Reinforced Masonry Shear Wall Buildings
Publication: Journal of Structural Engineering
Volume 144, Issue 8
Abstract
Damage state (DS) assessment of reinforced masonry shear wall (RMSW) building systems is key for developing simulation tools for pre- and post-earthquake risk-assessment frameworks. However, the majority of available RMSW damage models are generated based on DSs that are identified from component testing and/or modeling. Recent system-level studies showed that individual wall (component-level) responses might vary significantly from those observed when similar components are tested within an RMSW building (i.e., at the system level). Subsequently, in working toward more representative damage models for the next generation of seismic risk assessment standards, the current study focuses on developing a system-level-based damage state (SDS) assessment methodology as an alternative to the currently adopted component-level-based damage state (CDS) assessment approaches. Within this focus, and based on the available building response knowledge levels and expected component damage sequence, four SDS assessment methods, linked to different system-level damage indicators, are proposed. To demonstrate the application of the proposed methodology, the experimental results of a two-story RMSW building tested under simulated seismic loading are adopted in the current study. The results show that response predictions based on the CDS might be unconservative due to possible unexpected system-level failure modes and load-resisting mechanisms. The study shows that some RMSW system-level mechanisms (e.g., wall–diaphragm coupling), and the subsequent damage, cannot be evaluated through component-level testing.
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Acknowledgments
The financial support for this project was provided by the Natural Sciences and Engineering Research Council (NSERC) of Canada, and the Canada Masonry Design Centre (CMDC). Support was also provided by the McMaster University Centre for Effective Design of Structures (CEDS), funded through the Ontario Research and Development Challenge Fund (ORDCF) of the Ministry of Research and Innovation (MRI). Provision of mason time by the Ontario Masonry Contractors Association (OMCA) is appreciated. The provision of the scaled blocks and the continued financial support of the Canadian Concrete Masonry Producers Association (CCMPA) are gratefully acknowledged.
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Published In
Journal of Structural Engineering
Volume 144 • Issue 8 • August 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Jun 10, 2017
Accepted: Jan 25, 2018
Published online: Jun 11, 2018
Published in print: Aug 1, 2018
Discussion open until: Nov 11, 2018
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