RHS Cross-Connections with Fully Offset Branches in Tension
Publication: Journal of Structural Engineering
Volume 150, Issue 8
Abstract
This paper primarily presents an investigation into rectangular hollow section (RHS) cross- (or X-) connections with the branches fully laterally offset and loaded in axial tension. A set of 10 full-scale experimental specimens, carefully fabricated with noncritical welds, are tested in the laboratory, and the results are used to validate nonlinear finite-element models. To enhance the range of available data, the calibrated models are varied in an expanded parametric numerical study. A chord failure limit-state model based on a yield-line mechanism, which was identified in prior research on branch compression loading, is verified herein for branch tension loading. Furthermore, the limit state of branch failure is investigated by means of the combined experimental and numerical database produced. Design recommendations for laterally offset cross-connections loaded under branch tension, based on chord and branch failure modes, are presented. The application of current design recommendations for traditional cross-connections (with centered branches) to connections with full-width branches and laterally offset branches is also evaluated.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
Financial support for this project was provided by the Canadian Institute of Steel Construction (CISC), the Natural Sciences and Engineering Research Council of Canada (NSERC) and the UofT-Tsinghua Joint Research Fund. Hollow structural sections were generously donated by Atlas Tube, Harrow, Ontario, Canada. The authors are grateful for assistance from Mr. Dillon Rudman with regard to test specimen design and fabrication.
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© 2024 American Society of Civil Engineers.
History
Received: May 8, 2023
Accepted: Mar 29, 2024
Published online: Jun 11, 2024
Published in print: Aug 1, 2024
Discussion open until: Nov 11, 2024
ASCE Technical Topics:
- Analysis (by type)
- Connections (structural)
- Continuum mechanics
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Failure analysis
- Failure loads
- Finite element method
- Lateral loads
- Material mechanics
- Material properties
- Materials engineering
- Methodology (by type)
- Numerical analysis
- Numerical methods
- Solid mechanics
- Static loads
- Statics (mechanics)
- Strength of materials
- Structural dynamics
- Structural engineering
- Structural members
- Structural systems
- Tensile strength
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