CHS 914 and CHS 711 struts on a plate girder with M52 bolts
Large tubular struts, CHS 914×25 and CHS 711×25, seated on a 100 mm plate over a deep plate girder and fixed with M48 and M52 grade 10.9 bolts. The bolts govern at 95 % of capacity.
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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
- CHS 914×25 (S275), CHS 711×25 (S275)
- Plates
- 100 mm thick
- Bolts
- M48 8.8, M52 10.9
- Welds
- fillet, throat 25 mm
- Design code
- EN 1993-1-8
- 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 EN 1993-1-8. The bars above show each component’s utilisation for the governing load case.
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