SandorR
Student
- Dec 17, 2020
- 17
Hello!
I'm interested in how trusses built from hollow sections are designed to Eurocode. The final chapter of Eurocode 3 (steel connections) gives formulae how to calculate the axial resistance of connections between CHS and RHS sections, but does not give information on how to calculate their rotational stiffness. Often when we determine the loads on a truss structure (using Finite Element analysis for example) the connections are modeled as pinned. But often I see the hollow sections connected with welded joints. I would assume a joint made with around-welds would have a significant amount of stiffness, so that the joint could no longer be modeled as pinned. So I'm interested, when can the welded joint between hollow sections be considered pinned and do we need to consider the stiffness of such a join?
I'm interested in how trusses built from hollow sections are designed to Eurocode. The final chapter of Eurocode 3 (steel connections) gives formulae how to calculate the axial resistance of connections between CHS and RHS sections, but does not give information on how to calculate their rotational stiffness. Often when we determine the loads on a truss structure (using Finite Element analysis for example) the connections are modeled as pinned. But often I see the hollow sections connected with welded joints. I would assume a joint made with around-welds would have a significant amount of stiffness, so that the joint could no longer be modeled as pinned. So I'm interested, when can the welded joint between hollow sections be considered pinned and do we need to consider the stiffness of such a join?
