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Seismic assessment of pre-Northridge welded steel moment frame buildings and implications on community resilience Galvis, F. A.; Deierlein, G. G.; Molina Hutt, Carlos; Issa, O.; Baker, J. W.; Zsarnóczay, A.

Abstract

Many tall office buildings in high seismic areas along the west coast of the United States rely on older, seismically deficient, welded steel moment frames (WSMFs) of the kind that experienced sudden brittle fractures during the 1994 Northridge earthquake. Despite the known vulnerability of these buildings, policymakers lack robust and reliable metrics to quantify risk and support decision-making regarding mitigation actions. This paper summarizes a project that tackles impediments to robust quantification of risk and post-earthquake consequences in tall WSMFs. This project contributes by developing (1) a highfidelity model for fracture-critical connections, (2) a detailed database of tall WSMFs with their unique structural attributes, (3) an efficient damage indicator for post-earthquake re-occupancy decisions, and finally (4) an approach to quantify earthquake recovery time and economic loss for tall buildings and their neighboring structures.

Item Metadata

Title
Seismic assessment of pre-Northridge welded steel moment frame buildings and implications on community resilience
Creator
Galvis, F. A.; Deierlein, G. G.; Molina Hutt, Carlos; Issa, O.; Baker, J. W.; Zsarnóczay, A.
Contributor
National Conference on Earthquake Engineering (12th : 2022 : Salt Lake City (Utah))
Date Issued
2022-06
Description
Many tall office buildings in high seismic areas along the west coast of the United States rely on older, seismically deficient, welded steel moment frames (WSMFs) of the kind that experienced sudden brittle fractures during the 1994 Northridge earthquake. Despite the known vulnerability of these buildings, policymakers lack robust and reliable metrics to quantify risk and support decision-making regarding mitigation actions. This paper summarizes a project that tackles impediments to robust quantification of risk and post-earthquake consequences in tall WSMFs. This project contributes by developing (1) a highfidelity model for fracture-critical connections, (2) a detailed database of tall WSMFs with their unique structural attributes, (3) an efficient damage indicator for post-earthquake re-occupancy decisions, and finally (4) an approach to quantify earthquake recovery time and economic loss for tall buildings and their neighboring structures.
Genre
Conference Paper
Type
Text
Language
eng
Date Available
2023-09-15
Provider
Vancouver : University of British Columbia Library
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International
DOI
10.14288/1.0435906
URI
http://hdl.handle.net/2429/85930
Affiliation
Applied Science, Faculty of; Non UBC; Civil Engineering, Department of
Citation
Galvis F. A., Deierlein G. G., Molina Hutt C., Issa O., Baker J. W., Zsarnóczay A. Seismic assessment of preNorthridge welded steel moment frame buildings and implications on community resilience. Proceedings of the 12th National Conference in Earthquake Engineering, Earthquake Engineering Research Institute, Salt Lake City, UT. 2022.
Peer Review Status
Unreviewed
Scholarly Level
Faculty; Researcher; Graduate
Rights URI
http://creativecommons.org/licenses/by-nc-nd/4.0/
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Attribution-NonCommercial-NoDerivatives 4.0 International