Etabs Load case Question

[hkngrdk]

I want to create two different load cases within the same ETABS model, both for seismic conditions:

In Case 1, loads will be transferred from the slab to both columns and shear walls.

In Case 2, loads from the slab should only be transferred to the shear walls, meaning the columns should act as pinned supports (moment release at the slab-column connections).


I want to compare the internal forces for both cases within the same model. The reason for this approach is that sometimes Case 1 results in the most unfavorable forces for a column, while Case 2 is the most unfavorable for a beam. Additionally, I need to create load combinations based on these internal forces for design purposes.

This approach is described in the Turkish Seismic Code (TSC-2018) Section 4.3.4.4 (last paragraph).

How can I implement this in ETABS? Is there a step-by-step method to set up these load cases properly? Any references or literature recommendations would also be appreciated

 

[Luceid]

These are not "load cases" by the ETABS definition, these are different member releases on the model, specifically the releases of the columns.

As far as I know, there isn't a way to do this in the same model simultaneously. Most folks that I've interacted with will make a copy of the model and apply releases to the columns in one and no releases in the other to envelope in the manner you are asking about. Annoying, but that's what I've seen

 

[hkngrdk]

Thank you for the information.