Experimental Evaluation of Reduced Beam Section Connections to Deep Columns
Publication: Journal of Structural Engineering
Volume 132, Issue 3
Abstract
An experimental study was conducted to investigate the seismic behavior of reduced beam section (RBS) moment connections to a deep wide-flange column. The test matrix for the experimental program consisted of six full-scale interior RBS connections, where the column for the specimens ranged in depth from a W24 to a W36 wide flange section. Five of the specimens had a composite floor slab, with the remaining specimen having no floor slab and a supplemental lateral brace at the end of the RBS. The results from the study show that a composite floor slab provides restraint to the beams, reducing the magnitude of beam top and bottom flange lateral movement in the RBS, column twist, and strength degradation due to beam instability in the RBS. The performance of each of the test specimens was found to meet the seismic connection qualification criteria in Appendix S of the AISC seismic provisions. The results of the experimental study were used to develop a procedure for predicting the torque applied to a column from an RBS connection.
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Acknowledgments
The research reported herein was supported by grants from the American Institute of Steel Construction (Mr. Tom Schlafly, program manager) and the Pennsylvania Dept. of Community and Economic Development through the Pennsylvania Infrastructure Technology Alliance (PITA) program. Arcelor International America of New York, NY (steel sections), Nucor Vulcraft Group of Chemung, NY (metal decking), and the Lincoln Electric Company of Cleveland, Ohio (welding wire), donated materials used in the fabrication of the test specimens. The support provided by the funding agencies and companies is greatly appreciated. The Project Oversite Committee for this project included: Mr. Richard Drake; Mr. Lanny Flynn; Mr. Jim Malley; Mr. Hank Martin; Mr. Steven Powell; and Mr. Tom Schlafly. The input from the committee members and of that provided by Dr. Chi-Ming Uang, Dr. Michael Engelhardt, and Mr. Georges Axmann, is greatly appreciated. The authors would also like to acknowledge the valuable discussions and advice received from Professor John W. Fisher and Professor Le-Wu Lu from Lehigh University.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 3 • March 2006
Pages: 346 - 357
Copyright
© 2006 ASCE.
History
Received: Feb 7, 2005
Accepted: Jun 2, 2005
Published online: Mar 1, 2006
Published in print: Mar 2006
Notes
Note. Associate Editor: Rakesh K. Goel
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