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Effect of soil-building resonance on the seismic structural vulnerability of schools designated as post-disaster shelters in Montréal

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Damaj, Ghaleb, Assi, Rola et McClure, Ghyslaine. 2019. « Effect of soil-building resonance on the seismic structural vulnerability of schools designated as post-disaster shelters in Montréal ». In 12th Canadian Conference on Earthquake Engineering = 12ème Conférence Canadienne du Génie Parasismique (Québec, QC, Canada, June 17-20, 2019)

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Abstract

This paper presents an on-going research project that aims to study the effects of soil-building resonance on the seismic structural vulnerability of sixteen schools designated as post-disaster shelters in Montréal by the Civil Safety Department of the City of Montreal (Centre de sécurité civile de Montréal). The assessment of the structural seismic vulnerability of these schools builds upon a previous study conducted at McGill University using a seismic screening method adapted from the American standard FEMA 154 (Federal Emergency Management Agency) and New Zealand guidelines. The method did not take into consideration possible soil-building resonance as a parameter contributing to the structural vulnerability. In the current study, a coefficient of soil-building resonance (C.R) is estimated based on the dynamic characteristics extracted from ambient vibration measurements (AVM) in the school buildings and outside on the adjacent local soil. The main structural vulnerability parameters are taken directly from the previous McGill study and they include the type of lateral load resisting system, building height, construction year, site seismicity, structural irregularities (vertical and in-plane) and local soil class defined in the seismic provisions of the National Building Code of Canada. A deterministic structural vulnerability index (VI) of these school buildings is calculated based on the Analytical Hierarchy Process (AHP). The AHP is applied to estimate a weight factor for each of the parameters via pairwise comparison of their relative contribution to the structural vulnerability. The new proposed deterministic VI is classified into four classes: low, moderate, high and very high. The results obtained with this improved assessment procedure are compared to those obtained from the previous study, and the comparison shows that in some cases the addition of the soil-building resonance parameter increases the seismic vulnerability class of the building.

Item Type: Conference proceeding
Professor:
Professor
Assi, Rola
Affiliation: Génie de la construction
Date Deposited: 01 Mar 2021 20:48
Last Modified: 26 Mar 2021 15:42
URI: https://espace2.etsmtl.ca/id/eprint/22311

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