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Experimental Case Studies about Uniplanar SHS Joints with Full-Overlapped Top Connection
Patrick Heinemann1, Dorina-Nicolina Isopescu1
1Department of Civil and Industrial Engineering, Faculty of Civil Engineering and Building Services, "Gheorghe Asachi" Technical University of Iasi, 1, Prof. Dr. Docent Dimitrie Mangeron Blvd., No. 59A, 700050 Iasi, Romania.
The inclination angle significantly impacts the load-bearing capacity of squared hollow section joints, with a 46% reduction observed between the steepest and most obtuse angles. Squared profiles offer higher joint strength compared to circular ones.
Area of Science:
- Structural Engineering
- Materials Science
Background:
- Squared hollow steel profiles are vital in offshore and facade construction.
- Welded joints in these profiles exhibit reduced resistance due to geometric and stress complexities.
- Current standards inadequately address full-overlapped, on-top joints with squared hollow sections.
Purpose of the Study:
- To investigate the influence of inclination angles on the resistance of full-overlapped squared hollow section joints.
- To compare the load-bearing capacity of squared versus circular hollow section joints.
Main Methods:
- Experimental and numerical studies were conducted.
- Analysis focused on four common inclination angles for squared hollow section joints.
- Comparative analysis included squared and circular profiles of similar thickness.
Main Results:
- A 46% decrease in load-bearing capacity was observed between the steepest and most obtuse inclination angles.
- Joint behavior is non-linear and angle-dependent.
- Squared hollow section joints demonstrated superior bearing capacity over circular profiles.
Conclusions:
- Inclination angle is a critical factor affecting the structural integrity of these joints.
- Squared hollow sections provide enhanced joint performance compared to circular ones.
- Further research and standardization are needed for these specific joint configurations.
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