Cast Modular Panel Zone Node for Steel Special Moment Frames. I: Analytical Development
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Volume 133, Issue 10
Abstract
A panel zone dissipator modular node (PZ-MN) has been developed for use in seismic-resistant steel moment frames. The PZ-MN is configured directly for optimal seismic performance through a casting process. The PZ-MN dissipates energy through stable yielding of the panel zone. This objective is accomplished by mitigating the effects of panel zone distortion on surrounding members and connections. Field welds are removed from critical cross sections and demands are redirected in noncritical paths. A cast piece easily accommodates the geometries and features to meet this objective. The PZ-MN was developed through a comprehensive analytical research program and verified through full-scale experimentation. This paper describes the analytical development stage. Investigation of trial configurations, key parameters, and enhancements resulted in a prototype design for the PZ-MN. The PZ-MN prototype shows the potential for excellent seismic performance, including under the combined effects of lateral and gravity load. This performance is experimentally verified in a companion paper.
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Acknowledgments
This research was supported by NSF CAREER Award Grant No. NSFCMS-01-96120. Supplemental funds were provided by the American Institute of Steel Construction (AISC) and the Steel Founder’s Society of America (SFSA). Industry Partners Varicast, Inc. and Able Steel created the prototype specimens. The reaction frame was provided through a donation by ConXtech, Inc.; the computer laboratory through a grant from Intel, Inc.; finite-element software was donated by industry partner Swanson, Inc. (ANSYS). The writers are grateful for this support. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the writers and do not necessarily reflect the views of the National Science Foundation.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 133 • Issue 10 • October 2007
Pages: 1393 - 1403
Copyright
© 2007 ASCE.
History
Received: May 24, 2005
Accepted: Oct 9, 2006
Published online: Oct 1, 2007
Published in print: Oct 2007
Notes
Note. Associate Editor: Sherif El-Tawil
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