Performance of Steel Moment Connections under a Column Removal Scenario. I: Experiments
Publication: Journal of Structural Engineering
Volume 139, Issue 1
Abstract
This paper presents an experimental study of two full-scale steel beam-column assemblies, each comprising three columns and two beams, to (1) define their response characteristics under a column-removal scenario, including the capacity of the beams and their connections to carry loads through catenary action, and (2) provide experimental data for validation of beam-to-column connection models for assessing the robustness of structural systems. The assemblies represent portions of the exterior moment-resisting frames of two 10-story steel-frame buildings. One test specimen had welded unreinforced flange, bolted web connections, and the other had reduced beam–section connections. When subjected to monotonically increasing vertical displacement of the unsupported center column, both specimens exhibited an initial elastic response dominated by flexure. With increased vertical displacement, the connections yielded, and axial tension developed in the beams. The axial tension in the beams increased until the connections failed under combined bending and axial stresses. The test results show that the rotational capacities of both connections under monotonic column displacement are about twice as large as those based on seismic-test data.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This experimental study was conducted at the Engineer Research and Development Center of the U.S. Army Corps of Engineers and was supported by the National Institute of Standards and Technology, the American Institute of Steel Construction, the Air Force Research Laboratory, and the Defense Threat Reduction Agency.
References
AISC. (1999). Load and resistance factor design specifications for structural steel buildings, Chicago.
AISC. (2002). “Seismic provisions for structural steel buildings.” ANSI/AISC 341-02, Chicago.
ASCE. (2002). “Minimum design loads for buildings and other structures.” SEI/ASCE 7-02, Reston, VA.
ASCE. (2007). “Seismic rehabilitation of existing buildings.” ASCE/SEI 41-06, Reston, VA.
ASCE. (2010). “Minimum design loads for buildings and other structures.” SEI/ASCE 7-10, Reston, VA.
Chen, S. J. (1996). “A simple and effective retrofit method for steel beam-to-column connections.” 7th US-Japan Workshop on the Improvement of Structural Design and Construction Practices, Applied Technology Council, Redwood City, CA.
Department of Defense (DoD) (2009). “Design of buildings to resist progressive collapse.” Unified Facilities Criteria (UFC) 4-023-03, Dept. of Defense, Washington, DC.
Engelhardt, M. D., Winneberger, T., Zekany, A. J., and Potyraj, T. J. (1998). “Experimental investigation of dogbone moment connections.” Engl. J., 35(4), 128–139.
FEMA. (2000a). “Recommended seismic design criteria for new steel moment-frame buildings.” FEMA 350, SAC Joint Venture and FEMA, Washington, DC.
FEMA. (2000b). “State of the art report on connection performance.” FEMA 355D, SAC Joint Venture and FEMA, Washington, DC.
Friedman, A. D. (2009). “Axial, shear and moment interaction of WT connections.” M.S. thesis, Milwaukee School of Engineering. Milwaukee.
General Services Administration (GSA). (2003). Progressive collapse analysis and design guidelines for new federal office buildings and major modernization projects, General Services Administration, Washington, DC.
Iwankiw, N. R., and Carter, C. J. (1996). “The dogbone: A new idea to chew on.” Modern Steel Construction, 36(1), 18–23.
Karns, J. E., Houghton, D. L., Hall, B. E., Kim, J., and Lee, K. (2007). “Analytical verification of blast testing of steel frame moment connection assemblies.” Proc., Research Frontiers Sessions of the 2007 Structures Congress, ASCE, Reston, VA.
Liang, X., Shen, Q., and Gosh, S. K. (2008). “Assessing ability of seismic structural systems to withstand progressive collapse: Design of steel frame buildings.” Rep. Submitted to the Building and Fire Research Laboratory, National Institute of Standards and Technology, Gaithersburg, MD.
Sadek, F., et al. (2010). “An experimental and computational study of steel moment connections under a column removal scenario.” NIST Technical Note 1669, National Institute of Standards and Technology, Gaithersburg, MD.
Sadek, F., Main, J. A., Lew, H. S., and Bao, Y. (2011). “Testing and analysis of steel and concrete beam-column assemblies under a column removal scenario.” J. Struct. Eng., 137(9), 881–892.
Sadek, F., Main, J. A., Lew, H. S., and El-Tawil, S. (2013). “Performance of steel moment connections under a column removal scenario. II: Analysis.” J. Struct. Eng., 139(1), 108–119.
Thompson, S. L. (2009). “Axial, shear and moment interaction of single plate ‘shear tab’ connections.” M.S. thesis, Milwaukee School of Engineering. Milwaukee.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 139 • Issue 1 • January 2013
Pages: 98 - 107
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Aug 5, 2011
Accepted: Mar 30, 2012
Published online: Apr 3, 2012
Published in print: Jan 1, 2013
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.