Influence of Cross-Laminated Timber Floors and Their Connections on the Robustness of Mass-Timber Building: A Case Study on a Midrise Building
Publication: Journal of Performance of Constructed Facilities
Volume 37, Issue 6
Abstract
Mass-timber construction is becoming more prevalent in Australia and around the world. However, as these mass-timber buildings become taller, it is important to consider robust detailing against accidental damages to major load-bearing elements and thereby avoid potential progressive collapse scenarios. In order to better understand the robustness of typical mass-timber buildings, this study analyzed a typical 10-story midrise mass-timber building subjected to different progressive collapse scenarios. A scenario-independent approach was considered in the analysis, which includes the sudden removal of a load-bearing glulam column from the midrise mass-timber building. It was observed that when internal ties and bracings were provided, the robustness of the building was not affected as there was an alternative load path created. The orthogonal tie beam and diagonal bracing can transfer about 60% and 20% of the axial loads of the removed column to the adjacent columns, respectively. It was found that the building becomes vulnerable when no internal tie or bracing is available to transfer the accidental load. In this scenario, higher stiffness of the cross-laminated timber panel-to-panel joint can be adopted to improve the robustness of mass-timber building.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work was funded by the 2022–2023 Fellowship of the Coalition for Disaster Resilient Infrastructure (CDRI), 210927702.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 37 • Issue 6 • December 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jun 5, 2023
Accepted: Jul 24, 2023
Published online: Sep 19, 2023
Published in print: Dec 1, 2023
Discussion open until: Feb 19, 2024
ASCE Technical Topics:
- Axial loads
- Bracing
- Building materials
- Buildings
- Connections (structural)
- Construction engineering
- Construction methods
- Engineering materials (by type)
- Engineering mechanics
- Failure modes
- Forensic engineering
- Laminating
- Materials engineering
- Materials processing
- Progressive collapse
- Static loads
- Statics (mechanics)
- Structural engineering
- Structural members
- Structural systems
- Structures (by type)
- Wood and wood products
- Wood structures
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