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Performance of Two 18-Story Steel Moment-Frame Buildings in Southern California During Two Large Simulated San Andreas Earthquakes

Krishnan, Swaminathan and Komatitsch, Dimitri and Tromp, Jeroen (2006) Performance of Two 18-Story Steel Moment-Frame Buildings in Southern California During Two Large Simulated San Andreas Earthquakes. Earthquake Spectra, 22 (4). pp. 1035-1061. ISSN 8755-2930. doi:10.1193/1.2360698. https://resolver.caltech.edu/CaltechAUTHORS:KRIes06

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Abstract

Using state-of-the-art computational tools in seismology and structural engineering, validated using data from the Mw=6.7 January 1994 Northridge earthquake, we determine the damage to two 18-story steel moment-frame buildings, one existing and one new, located in southern California due to ground motions from two hypothetical magnitude 7.9 earthquakes on the San Andreas Fault. The new building has the same configuration as the existing building but has been redesigned to current building code standards. Two cases are considered: rupture initiating at Parkfield and propagating from north to south, and rupture propagating from south to north and terminating at Parkfield. Severe damage occurs in these buildings at many locations in the region in the north-to-south rupture scenario. Peak velocities of 1 m.s−1 and 2 m.s−1 occur in the Los Angeles Basin and San Fernando Valley, respectively, while the corresponding peak displacements are about 1 m and 2 m, respectively. Peak interstory drifts in the two buildings exceed 0.10 and 0.06 in many areas of the San Fernando Valley and the Los Angeles Basin, respectively. The redesigned building performs significantly better than the existing building; however, its improved design based on the 1997 Uniform Building Code is still not adequate to prevent serious damage. The results from the south-to-north scenario are not as alarming, although damage is serious enough to cause significant business interruption and compromise life safety.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1193/1.2360698DOIArticle
ORCID:
AuthorORCID
Krishnan, Swaminathan0000-0002-2594-1523
Tromp, Jeroen0000-0002-2742-8299
Additional Information:©2006 Earthquake Engineering Research Institute (Received 5 August 2005; accepted 10 February 2006) We wish to thank John F. Hall, Thomas Heaton, and Hiroo Kanamori of the California Institute of Technology for their input during the course of this study, and the Earthquake Spectra editor and reviewers for valuable comments that enhanced the article. The numerical simulations were performed on the Division of Geological & Planetary Sciences Dell cluster at the California Institute of Technology and the Seawulf cluster at the University of Toronto.
Subject Keywords:reinforced concrete; structural engineering; earthquakes; seismology
Issue or Number:4
DOI:10.1193/1.2360698
Record Number:CaltechAUTHORS:KRIes06
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:KRIes06
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6292
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:01 Dec 2006
Last Modified:08 Nov 2021 20:32

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