Steel collar on a concrete column carrying an HEB 400 beam
Steel plates wrap a reinforced concrete column, tied with rods through the concrete, and carry an HEB 400 beam. Plates 15–40 mm; bolts, anchors and the concrete under the plates are all checked.
Connection library · Special and multi-member nodes · multi-storey building
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The 3D model is the connection as it was checked: members, plates, welds and bolts. Drag to rotate, scroll or pinch to zoom, tap a part type to hide it.
- Members
- HEB 400 (S275)
- Plates
- 15–40 mm thick
- Bolts and anchors
- M24 8.8, M30 5.8
- Welds
- fillet, throat 7.1–10 mm
- Design code
- AISC 360-16
- Method
- Component-based finite element model (CBFEM)
How it was checked
Every plate, bolt and weld in one model
The joint is modelled with shell elements for the plates and member ends, and with nonlinear springs for bolts, welds and anchors (the component-based finite element method). The member forces are applied at the member ends and the model is loaded step by step to the full design load.
Plates pass when the plastic strain stays below the limit of the code; bolts, welds and anchors are checked against the component resistances of AISC 360-16. The bars above show each component’s utilisation for the governing load case.
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