Blast and Impact Loading and Response of Structures
NEW: This paper presents experimental tests performed to estimate the strength and deformations capabilities of wood components and connections for disproportionate collapse preventions. This study helps expanding the application of mass-timber to constructions such as post-disaster, military/federal, and high-rise buildings.
The recognition of wood as a viable option for sustainable construction has promoted the use of Engineering Wood Products, such as mass-timber panels, from low-rise single occupancy houses to high-rise residential and commercial buildings. To safely expand the application of mass-timber to constructions such as post-disaster, military/federal, and high-rise buildings, studies with respect to disproportionate collapse prevention are required. The ASCE/SEI Disproportionate Collapse Technical Committee is currently developing guidelines to help designing structures that can bridge over damages caused by abnormal loads without propagation. Being a new method of construction, mass-timber buildings are not included; studies on this topic are scarce and limited to numerical investigations only.
This paper presents experimental study to understand possible resistance mechanisms for disproportionate collapse preventions of mass-timber buildings. Herein, testing is performed at scaled component level, with conventional and novel connection detailing. The results estimate the strengths and deformations capabilities to ensure adequate load distribution while undergoing large deformations without failure. As this study defines the disproportionate collapse acceptance criteria for mass-timber construction, it helps setting practical and economic collapse-thresholds which can be utilised to determine the potential for disproportionate collapse and ensure structural safety after extreme loading events.