2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference

Post-Tensioned Timber Wall-Frame System

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Dr. Asif Iqbal, University of Northern British Columbia (Presenter)
Mr. Kai-Yi Wu, University of Northern British Columbia

For timber structures above mid-rise it is inefficient to use lightweight frames and shearwall systems. It is often necessary to add individual or groups of shear walls to complement the lateral load capacities of frame systems. Structural walls and frames with prefabricated members made of timber and connected with unbonded post-tensioning have recently been developed for buildings. Prefabricated post-tensioned timber members can be designed to have excellent lateral load resistance with the post-tensioning providing self-centering capacity. Numerical model of building structure has been developed to investigate the effects of interaction between the frames and shear walls under gravity and lateral load conditions. Combinations of different types and arrangements of frames and shear walls are investigated to compare their efficiencies. Based on the findings, recommendations on the optimum solutions as well as practical limits of this type of application are presented. The developments in the concept and understanding are expected to help in more efficient and thereby economic designs of tall wood building structures.