Offsets and compatible nodes
Accepted solution
@Anonymous wrote:
Hello,
I have a problem with modelling properly offsets. Basically, this is a small tank supporting frame.
- Tank is supported on 9 beams
- 9 beams are supported on two larger beams
- 2 larger beams are supported over the columns
How to model it properly?
If you really need them I suggest using rigid links or short vertical bar elements.
The bracings are to be bolted in their mid-span. I read some topics and in general it was agreed that this approach is reproduced in a proper manner by compatible nodes (what I applied). Could someone confirm please?
I'd use compatible nodes too.
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Artur Kosakowski
@Anonymous wrote:
Could you also help on the following?
The bending moment from beams (extreme marked with green) is not transferred to the column? I want to design it as a rigid connection.
Thank you again.
J
I can see that you removed the releases which were excessive in your previous model. The bending is not transferred as you released rotation in the definition of the rigid link. In case you want it to be transferred from the beam to the column you should either block this d.o.f in the definition of the release or just extend the column to the level of the beam removing rigid link with no release defined for the column.
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
Artur Kosakowski
Thank you once more!
In the attached model (test6) my problem is that these two alerts are not shown for all angular profiles I defined but only for a few. I have 16 bars that imitate bracings and would expect to see all of them here?
Now I have a bit different issue. In the next attached model (test7) I can not generate hydrostatic load even though I have added it and is visible in a load table. What might be the problem? In general does this pressure only apply to wall or also to flooring? Or perhaps flooring needs a separate definition?
Kind regards,
J
Accepted solution
In the attached model (test6) my problem is that these two alerts are not shown for all angular profiles I defined but only for a few. I have 16 bars that imitate bracings and would expect to see all of them here?
The class of the L section depends both on its arms height to thickness ration and stress distribution there. For the upper list the sections meet the class 4 criteria but they were calculated as class 3 as angles of class 4 are not supported in Robot. For the bottom they meet the either class 1 or 2 criteria but they were calculated as class 3 following the indicated recommendations of British NAD for EC3.
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
Artur Kosakowski
Accepted solution
Now I have a bit different issue. In the next attached model (test7) I can not generate hydrostatic load even though I have added it and is visible in a load table. What might be the problem? In general does this pressure only apply to wall or also to flooring? Or perhaps flooring needs a separate definition?
If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.
Artur Kosakowski