Conical concrete column with an annular cross-section

[Anonymous]

Hello. I am testing the software with a conical concrete column with an annular cross-section (CHS concrete cross-section) and I have a few questions.
1) is it possible to analyze such section in RC module with prestressing reinforcement (prestressing tendons) and transverse spiral reinforcement?
2) If I will have RC module, can I e.g. use nominal curvature method in 2nd order effects (EC2: 5.8.8)?
3) is it possible to add a point load in the beam/column using coordinates without creating a node? When I test the free version, I have to divide the conical column into several parts (nodes where point loads are applied), then I turn on the static calculation and have an ‘error’ – so I go back to partial non-conical sections.

I would appreciate your help, I attach a sample file.

[NextFEM Admin]

Hello,
please find below:
1. we support prestressing on cross-section checking and during analysis by using a pretension load (see Assign / Loads / Pretension load mask).
2. what do you need nominal curvature method by EC2 for? we provide directly the numerical moment-curvature curve. If you need 2nd order effects in analysis, activate P-Delta or “2nd order” options for non-linear analysis
3. We don’t support directly a point load without a supporting node; however in the model you attached you get errors because you need the command Edit / Check model / Check line mesh, otherwise your model has free nodes.
The suggested way is to remove the free nodes, and to apply a distributed non uniform load instead of the point load.
You’re dealing with a tapered section (conical), hence it’s best to have a single element without further splitting.

regards

[Anonymous]

Thank you for the information.
My Best Regards!

[Author]

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