An Ambient Vibration Test of an R/C Wall of an 18-Story Wood Building at the UBC Campus

This paper is part of long-term research project, and the main intension of this paper to estimate the stiffness of a concrete core wall of 18-story timber based structure. The 53-meter tall structure has been constructed at the campus of the University of British Columbia in 2016, and it is currently used as a student resident. The building is the tallest timber-based structure in North America. An Ambient Vibration Test (AVT) was conducted on one of the concrete walls to estimate the modal properties of the concrete wall (e.g., modal frequency, modal damping ratio, and mode shape). The construction of the two concrete walls was finished at the time of the AVT, but not the entire structure; therefore, the AVT was conducted only on one of the concrete walls. The modal properties of the Bernoulli Euler and Shear beam are previously used in the literature to estimate the structural response; therefore, they are now used in this study to match the extracted modal response of the concrete wall to estimate the stiffness of the concrete wall. The preliminary results are presented in the paper, but still this work is in progress, and more results will be published in the future.