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Case studies of damage to 19-storey irregular steel moment-frame buildings under near-source ground motion

Krishnan, Swaminathan (2007) Case studies of damage to 19-storey irregular steel moment-frame buildings under near-source ground motion. Earthquake Engineering and Structural Dynamics, 36 (7). pp. 861-885. ISSN 0098-8847. doi:10.1002/eqe.657. https://resolver.caltech.edu/CaltechAUTHORS:20130305-075249536

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Abstract

This paper describes the three-dimensional nonlinear analysis of six 19-storey steel moment-frame buildings, designed per the 1997 Uniform Building Code, under strong ground motion records from near-source earthquakes with magnitudes in the range of 6.7–7.3. Three of these buildings possess a reentrant corner irregularity, while the remaining three possess a torsional plan irregularity. The records create drift demands of the order of 0.05 and plastic rotation demands of the order of 4–5% of a radian in the buildings with reentrant corners. These values point to performance at or near ‘Collapse Prevention’. Twisting in the torsionally sensitive buildings causes the plastic rotations on the moment frame on one face of the building (4–5% of a radian) to be as high as twice of that on the opposite face (2–3% of a radian). The asymmetric yield pattern implies a lower redundancy in the lateral force-resisting system as the failure of the heavily loaded frame could result in a total loss of resistance to torsion.


Item Type:Article
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http://dx.doi.org/10.1002/eqe.657 DOIUNSPECIFIED
http://onlinelibrary.wiley.com/doi/10.1002/eqe.657/abstractPublisherUNSPECIFIED
ORCID:
AuthorORCID
Krishnan, Swaminathan0000-0002-2594-1523
Additional Information:© 2006 John Wiley & Sons, Ltd. Received 14 December 2005; Revised 30 September 2006; Accepted 2 October 2006. Article first published online: 14 Nov. 2006. I wish to gratefully acknowledge the support and guidance provided by my Ph.D. advisor Dr John F. Hall, Professor of Civil Engineering at the California Institute of Technology, during the course of this study. This study was funded in part by the California Institute of Technology. I wish to thank the editor and reviewers for valuable comments that enhanced the article.
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CaltechUNSPECIFIED
Subject Keywords:tall buildings; moment-frames; near-source ground motion; irregularity
Issue or Number:7
DOI:10.1002/eqe.657
Record Number:CaltechAUTHORS:20130305-075249536
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130305-075249536
Official Citation:Krishnan, S. (2007), Case studies of damage to 19-storey irregular steel moment-frame buildings under near-source ground motion. Earthquake Engng. Struct. Dyn., 36: 861–885. doi: 10.1002/eqe.657
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37285
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:06 Mar 2013 16:29
Last Modified:09 Nov 2021 23:28

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