Seismic Behavior of Reduced Beam Section Moment Connections to Deep Columns
Publication: Journal of Structural Engineering
Volume 132, Issue 3
Abstract
An analytical study was conducted to investigate the seismic behavior of reduced beam section (RBS) moment connections to a deep wide flange column. Calibrated three-dimensional finite element models of RBS connections in perimeter special moment resisting frames with deep columns were used to perform parametric studies under inelastic monotonic and cyclic loading. The parameters in the study included: beam-to-column connection type, column section, composite floor slab, panel zone strength, and beam web slenderness. The results from the parametric study show that a composite floor slab provides restraint to the top flange of 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 effect of beam web slenderness contributing to an increase in the lateral movement of the beam flange in the RBS and column flange is significantly reduced when a composite floor slab is present. A weaker panel zone results in higher potential for ductile fracture in the connection region. An RBS connection to a deep column is shown to have less potential for ductile fracture in the connection region than a welded unreinforced flange connection. The potential for fracture is increased in RBS connections when the column section properties are reduced, leading to larger stress and strain.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The research reported herein was supported by a grant from the American Institute of Steel Construction (Mr. Tom Schlafly program manager) and from the Pennsylvania Department of Community and Economic Development through the Pennsylvania Infrastructure Technology Alliance (PITA) program. The support provided by these funding agencies is greatly appreciated.
References
ABAQUS user’s manual, Ver 6.1. (2001). Hibbit, Karlsson & Sorenson, Pawtucket, R.I.
AISC. (2001). Manual of steel construction-load and resistance factor design, 3rd Ed., Chicago.
AISC. (2002). Seismic provisions for structural steel buildings, Chicago.
Chen, S.-J., Yeh, C. H., and Chu, J. M. (1996). “Ductile steel beam-to-column connections for seismic resistance.” J. Struct. Eng., 122(11), 1292–1299.
Chi, B., and Uang, C.-M. (2002). “Cyclic response and design recommendations of reduced beam section moment connections with deep columns.” J. Struct. Eng., 128(4), 464–473.
El-Tawil, S., Mikesell, T., Vidarsson, E., and Kunnath, S. (1998). “Strength and ductility of FR welded-bolted connections.” Rep. No. SAC/BD-98/01, SAC Joint Venture, Sacramento, Calif.
Engelhardt, M. D. (1999). “The 1999 T. R. Higgins lecture: Design of reduced beam section moment connections.” Proc.: 1999 North American Steel Construction Conf., American Institute of Steel Construction, Toronto, Canada, 1-1–1-29.
Engelhardt, M. D., Winneberger, T., Zekany, A. J., and Potyraj, T. J. (1997). “Experimental investigation of dogbone moment connections.” Proc., 1997 National Steel Construction Conf., AISC, Chicago.
Federal Emergency Management Agency (FEMA. (2000). “Recommended seismic design criteria for new steel moment-frame buildings.” Rep. No. FEMA 350, Washington, D.C.
Hancock, J. W., and MacKenzie, A. C. (1976). “On the mechanisms of ductile failure in high-strength steels subjected to multi-axial stress-states.” J. Mech. Phys. Solids, 24, 147–169.
Jones, S. L., Fry, G. T., and Engelhardt, M. D. (2002). “Experimental evaluation of cyclically loaded reduced beam section moment connections.” J. Struct. Eng., 128(4), 441–451.
Lee, S., and Lu, L. (1989). “Cyclic tests of full-scale composite joint subassemblages.” J. Struct. Eng., 115(8), 1977–1998.
Lemaitre, J. (1996). A course on damage mechanics, Springer, Berlin.
Mao, C., Ricles, J., Lu., L. W., and Fisher, J. (2001). “Effect of local details on ductility of welded moment connections.” J. Struct. Eng., 127(9), 1036–1044.
Plumier, A. (1997). “The dogbone: Back to the future.” Eng. J., 34(2), 61–67.
Ricles, J. M., Mao, C., Lu, L.-W., and Fisher, J. W. (2000). “Development and evaluation of improved details for ductile welded unreinforced flange connections.” Rep. No. SAC/BD-00/24, SAC Joint Venture, Sacramento, Calif.
Ricles, J., Zhang, X., Lu, L. W., and Fisher, J. W. (2004). “Development of seismic guidelines for deep-column steel moment connections.” Rep. No. 4–13, ATLSS Engineering Research Center, Lehigh Univ., Bethlehem, Pa.
Seaburg, P., and Carter, C. (1997). “Torsional analysis of structural steel members.” Steel design guide series 9, AISC Chicago.
Tremblay, R., Tchebotarev, N., and Filiatrault, A. (1997). “Seismic performance of RBS connections for steel moment resisting frames: Influence of loading rate and floor slab.” Proc., Stessa ’97, Kyoto, Japan, 664–671.
Tsai, K. C., Chen, W. Z., and Lin, K. C. (1999). “Experimental responses of steel reduced beam section to weak panel zone moment connections.” Proc., Workshop on Design Technologies of Earthquake-Resistant Moment-Resisting Connections in Steel Buildings, National Taiwan Univ., Taipei, Taiwan.
Uang, C.-M., and Fan, C.-C. (2001). “Cyclic stability criteria for steel moment connections with reduced beam section.” J. Struct. Eng., 127(9), 1021–1027.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 3 • March 2006
Pages: 358 - 367
Copyright
© 2006 ASCE.
History
Received: Nov 22, 2004
Accepted: Jun 3, 2005
Published online: Mar 1, 2006
Published in print: Mar 2006
Notes
Note. Associate Editor: Gregory A. MacRae
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.