Cyclic Response of Composite Steel Gravity Framing Connections in Multibay System-Level Tests
Publication: Journal of Structural Engineering
Volume 150, Issue 3
Abstract
This paper presents an experimental study of the seismic behavior of steel gravity frames with concrete on metal deck floor systems using multibay test specimens subjected to cyclic lateral loads. Fully bolted double-angle connections were used for the primary gravity connections under investigation. Key design variables and construction details under investigation include metal deck orientation, positioning of metal deck seams, and increased deck reinforcing ratios around the columns. Test specimens were simultaneously subjected to gravity loads and quasi-static displacement-controlled cyclic lateral loads. Results show that composite gravity connections exhibit substantial flexural stiffness, strength, and ductility, with some differences in response depending on connection design variables and construction details. Results from the system-level experiments using multibay test specimens demonstrate significant differences compared to previous subassembly tests, which indicates that the moment-resisting capacity of connections may potentially be underestimated in subassembly level tests.
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Data Availability Statement
The full details and experimental results for this test program have been archived at the DesignSafe website (https://doi.org/10.17603/ds2-xa1b-ac84).
Acknowledgments
This research was supported by the National Science Foundation (NSF) under Award No. CMMI-1825691. The financial support is gratefully acknowledged. The authors gratefully acknowledge the generous donation of structural steel from the American Institute of Steel Construction (AISC) and steel floor deck from New Millennium Building Systems. The authors also gratefully acknowledge the comments and feedback provided by an industry advisory group that included Tom Sputo, Larry Kruth, and Pat McManus. Any opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the National Science Foundation or the individuals noted above.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 150 • Issue 3 • March 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Jul 17, 2023
Accepted: Oct 24, 2023
Published online: Jan 5, 2024
Published in print: Mar 1, 2024
Discussion open until: Jun 5, 2024
ASCE Technical Topics:
- Connections (structural)
- Continuum mechanics
- Cyclic loads
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Frames
- Gravity loads
- Lateral loads
- Load tests
- Seismic loads
- Seismic tests
- Solid mechanics
- Static loads
- Statics (mechanics)
- Steel frames
- Structural dynamics
- Structural engineering
- Structural members
- Structural systems
- Tests (by type)
Authors
Metrics & Citations
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