Abstract
The seismic response of traditional steel structures is inherently linked to permanent plastic deformations and to damage to the main structural elements. In this paper, results from extensive numerical analyses are presented which indicate that the expected residual deformations in steel frame structures designed according to the latest codes are significant and could potentially render buildings a total loss even though they are not at imminent risk of collapse. New systems, that address these drawbacks and that have been proposed and developed in the past few years are then presented. These include moment-resisting frames and eccentrically braced frames with replaceable nonlinear links as well as a new family of self-centering systems for steel structures.
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References
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Acknowledgements
The work that is summarized in this paper has been carried out in close collaboration with a number of researchers in Canada. The closest collaborators that the author wishes to acknowledge are: Professor Robert Tremblay from Ecole Polytechnique in Montreal, Dr. Hyung-Joon Kim from the University of Seoul in Korea (formerly a Ph.D. student at the University of Toronto), Dr. Hyunhoon Choi from Sungkyunkwan University in Korea (formerly a Postdoctoral Fellow at the University of Toronto), as well as Nabil Mansour and Jeff Erochko who are currently Ph.D. students at the University of Toronto. The Financial support of the Natural Sciences and Engineering Research Council of Canada, which has supported most of the work that was outlined in this paper, is also gratefully acknowledged.
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Christopoulos, C. (2010). High Seismic Performance Systems for Steel Structures. In: Fardis, M. (eds) Advances in Performance-Based Earthquake Engineering. Geotechnical, Geological and Earthquake Engineering, vol 13. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-8746-1_25
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DOI: https://doi.org/10.1007/978-90-481-8746-1_25
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