Question:
When modeling a wall, lifting forces that we cannot explain arise in the support area. Once the wall is not modeled and the slab is supported directly, we obtain plausible support forces. What is the error?
Answer:
Simply use the result evaluation for deformations in this case. Since the deformations are very small, increase the number of decimal places for the display of the deformation first.
If you display the deformation in global Y for the wall pillar and increase the display factor, you can clearly see how the wall is bent. The support reaction counteracts this deformation as a restraint.
If you define a line support directly on the slab edge, the flexibility of the wall surface is not applicable.