Abstract:
The goals of this research are to gain a better understanding of the mechanics of timber moment-frame connections during two different fire scenarios: fire and post-earthquake fire. This research will develop the testing methodologies and benchmark data required to develop design for the fire and post-earthquake performance of timber moment resisting frame connections.
 
Project Duration:
2019 - 2022 
 
Funding:
Agricultural Research Services (ARS)
 
Research Team:
Erica Fischer, Arijit Sinha
 
Background:
There is limited data on the seismic and fire performance of moment resisting frame connections for mass timber structures, which promise a viable alternative to other timber lateral force resisting systems (LFRS) such as post-tensioned rocking shear walls. Because moment resisiting frames provide significant redundandcy between the LFRS and the gravity load path systems, it is critical that during a fire, the beam-to-column moment resisting frame connections maintain gravity load carrying capacity.
 
Project Overview:
WIll test two moment resisting frame connections under fire and post-earthquake fire loading scenarios.
  • Full scale monotonic and cyclic loading tests on sub-assemblies for both connection types at the Emmerson lab.
  • Fire testing of structurally tested and un-tested specimens at the National Research Council (NRC) of Canada. These tests will occur under service loading conditions and will measure temperature gradients through the cross section of the connection, as well as displacements between the beam and column and residual cross section dimensions.
  • Data will be used to benchmark numerical models in order to perfom a parametric study that allows for varying of geometric parameters such as connection geometry and fastener configurations.