Seismic Performance of Post-tensioned Steel Moment Resisting Frames With Friction Devices
Publication: Journal of Structural Engineering
Volume 131, Issue 4
Abstract
A post-tensioned friction damped connection (PFDC) for earthquake resistant steel moment resisting frames (MRFs) is introduced. The connection includes friction devices on the beam flanges with post-tensioned high strength strands running parallel to the beam. The connection minimizes inelastic deformation to the components of the connection as well as the beams and columns, and requires no field welding. Inelastic analyses were performed on a six-story, four-bay steel MRF with PFDCs to study its response to strong ground motions. The PFDC–MRF was designed using a performance based design approach. Results show the MRF with PFDCs has good energy dissipation, self-centering capability, and strength. Variability in the maximum friction forces that develop in the friction devices was determined not to have a significant effect on the MRF performance. The analyses indicate that the seismic performance of a MRF with PFDCs can exceed that of a MRF with conventional moment resisting connections.
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Acknowledgments
The research reported herein was supported by a grant from the Ecuadorian government through a fellowship to the first author, and by a grant from the Pennsylvania Department of Community and Economic Development through the PITA program. The opinions expressed in this paper are those of the writers and do not necessarily reflect the views of the sponsors. The writers would like to thank Professor Maria Garlock of Princeton University for her contributions to the research that this paper is based upon.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 4 • April 2005
Pages: 529 - 540
Copyright
© 2005 ASCE.
History
Received: Jun 12, 2003
Accepted: Mar 15, 2004
Published online: Apr 1, 2005
Published in print: Apr 2005
Notes
Note. Associate Editor: Michael D. Symans
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