How to give stability to a simple shed in the pinned direction? 1

[T2ioTD]

I am new to steel design, I have background in reinforced concrete and geotechnic. I am studying a simple shed in Robot software. Since there is no connection that will transfer a moment between a beam and the WEB of a I column (red beams in the y direction with the yellow columns) I had to release the beams in the y direction to be pinned pinned. As a result, I had to make the supports rigid. Is there another (better) way to achieve stability in the y direction?

 

[KootK]

You can do a weak axis moment connection into a WF column web. Something like this:

 

[rb1957]

is the OP talking about limitations of "robot" software ? (rather than the practicalities of how to do it ?

"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.

 

[T2ioTD]

OP here. It seems the bracing (very light cyan color in the picture) are not working properly as they were assigned a property Flexion Only. If I remove this property and make them Pinned Pinned, the instability disappears.
Thank you all for your replies.

 

[BulbTheBuilder]

Looking at the left frame only (since both cyan braces have opposing direction). The brace will be in tension if the lateral force is Y+ but compression in Y-. If the applied load is Y- and you've a rod defined, then you literally have "no bracing" and vice-versa for the right frame. That is probably why you are getting instabilities. Green arrow says OK, Red not good

 

[Tomfh]

Why not just a beam end plate to the column? There's various ways you can do it.