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Characterizing Ground Motions That Collapse Steel Special Moment-Resisting Frames or Make Them Unrepairable

Olsen, Anna H. and Heaton, Thomas H. and Hall, John F. (2015) Characterizing Ground Motions That Collapse Steel Special Moment-Resisting Frames or Make Them Unrepairable. Earthquake Spectra, 31 (2). pp. 813-840. ISSN 8755-2930. doi:10.1193/102612EQS318M.

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This work applies 64,765 simulated seismic ground motions to four models each of 6- or 20-story, steel special moment-resisting frame buildings. We consider two vector intensity measures and categorize the building response as “collapsed,” “unrepairable,” or “repairable.” We then propose regression models to predict the building responses from the intensity measures. The best models for “collapse” or “unrepairable” use peak ground displacement and velocity as intensity measures, and the best models predicting peak interstory drift ratio, given that the frame model is “repairable,” use spectral acceleration and epsilon (ϵ) as intensity measures. The more flexible frame is always more likely than the stiffer frame to “collapse” or be “unrepairable.” A frame with fracture-prone welds is substantially more susceptible to “collapse” or “unrepairable” damage than the equivalent frame with sound welds. The 20-story frames with fracture-prone welds are more vulnerable to P-delta instability and have a much higher probability of collapse than do any of the 6-story frames.

Item Type:Article
Related URLs:
URLURL TypeDescription Material
Heaton, Thomas H.0000-0003-3363-2197
Hall, John F.0000-0002-7863-5060
Additional Information:© 2015 Earthquake Engineering Research Institute. Received 19 January 2012; accepted 9 September 2013. This research was supported by the Southern California Earthquake Center (SCEC). SCEC is funded by NSF Cooperative Agreement EAR-0106924 and USGS Cooperative Agreement 02HQAG0008. The SCEC contribution number for this paper is 1529. The building response simulations were run at the University of Southern California Center for High Performance Computing and Communications under an agreement with the SCEC Community Modeling Environment project. We thank Shiyan Song for providing a physical explanation for the V-shaped contours of the probabilities of “collapse” and “unrepairable.” Also, we appreciate reviews of or comments on this paper by Nicolas Luco, Farzin Zareian, Terrence Paret, and six anonymous reviewers. Their comments greatly improved this paper.
Group:Seismological Laboratory
Funding AgencyGrant Number
Southern California Earthquake Center (SCEC)UNSPECIFIED
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Other Numbering System NameOther Numbering System ID
Southern California Earthquake Center1529
Issue or Number:2
Record Number:CaltechAUTHORS:20150625-084904354
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Official Citation:Characterizing Ground Motions That Collapse Steel Special Moment-Resisting Frames or Make Them Unrepairable Anna H. Olsen, Thomas H. Heaton, and John F. Hall Earthquake Spectra 2015 31:2, 813-840
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58594
Deposited By: Tony Diaz
Deposited On:25 Jun 2015 17:49
Last Modified:10 Nov 2021 22:07

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