Conceptual Seismic Design of Regular Frames Based on the Concept of Uniform Damage
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VIEW THE REPLYPublication: Journal of Structural Engineering
Volume 133, Issue 7
Abstract
The objective of this study was to propose a seismic design methodology for moment-resisting frames to limit the extent of structural damage and distribute this damage uniformly along the height. This permits the efficient utilization of the energy dissipation capacity of most structural members to avoid undesirable dynamic responses, e.g., the formation of story mechanisms and/or the amplification of story drifts caused by –delta effect. The proposed methodology is based on the utilization of seismic design lateral load patterns to obtain a uniform distribution of story ductility ratios along the height. It is demonstrated that, on average, frame structures designed based on the proposed approach exhibit a more uniform distribution of story ductility and story drift ratios when compared to the distributions obtained using current U.S. seismic code provisions. Designs based on the proposed approach are expected to provide increased protection against global collapse and loss of life during a strong earthquake event.
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Copyright
© 2007 ASCE.
History
Received: Dec 28, 2005
Accepted: Dec 8, 2006
Published online: Jul 1, 2007
Published in print: Jul 2007
Notes
Note. Associate Editor: Rakesh K. Goel
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