Core walls for lateral stability

[marte.oline.bodal]

Hi, I'm trying to make a model where all the lateral stability is located in a central core. I've handcalculated the displacement of the building and my robot answer is quite off... It lookes like som other part are providing stiffening to the building as well, the model is attached. 

[Rafacascudo]

Zip it before attaching

[marte.oline.bodal]

I did  that, don't know why it didn't get attached, but I'll try again 🙂

[Rafacascudo]

You have many columms ,but all your horizontal force is being resisted by the core wall

Columms are helping with the overturning moment (vertical reactions binary forces

[marte.oline.bodal]

Okey, so I've modelled it correctly ? I was expecting the displacement to be around 30 mm.

(I have to do some kind of calculation showing that alle the lateral stability is provided by the core in the model) 

[marte.oline.bodal]

How did you find those reaction forces ? I've tried checking the reactionforces myself, but I get different values. 

[Rafacascudo · Accepted solution]

[marte.oline.bodal]

Thanks! I tried making the model without the beams, columns and slabs, if the model work the way I want I should get the same maximum deflection as this model, but at the moment I don't get that.

I have modeled the releases of the beams and columns as pinned-pinned, i do not want them to contribute to the buildings stiffness. I want the floor to act as a rigid diaphragm, so that it just transfer the lateral load to the core. 

Should I use slab - rigid diaphragm og just rigid diaphragm ?