raft flooring floor safety negative

[sadikcafer]

Hello, I made a raft foundation in a 13-storey building, but I got a negative ground safety error. I have a few questions; 1-) I made a continuous foundation of 100cm(height)-100cm(width) around the foundation and placed a 100cm raft slab on the inside and since my floor class is Z3, I chose the superstructure interactive solution and had it analyzed. The building has made a huge deformation in one direction (it was officially overturning), it doesn't see the foundations all the time. 2-) In the perspective region, it shows the foundation displacement as 13.44mm in red and this happens under the elevator curtains in the core of the building, can I build a continuous foundation only on the underside of the curtains (by laying 100cm raft on the rest of the walls)? 3-) There is a 100cm thick raft floor in the picture and there are 1.50 protrusions from all over the building, still the same problem, the biggest displacement under the elevator curtains

 

[Levent Özpak]

1-) I made a continuous foundation of 100cm(height)-100cm(width) around the foundation and placed a 100cm raft slab inside and since my floor class is Z3, I chose the superstructure interactive solution and had it analyzed. It made a big deformation in the direction (it was officially overturning), it doesn't see the foundations all the time, I don't understand what exactly is wrong here.

Hello, As you stated, the foundation design is definitely wrong in terms of program data entry. In the beamless raft foundation system, the borders of the raft slab must be created using only the slab edge. It can be defined continuously only from the outside or only under the elevator. In the case of creating a raft floor under other elements, the columns that fit on the raft floor The impact of the bee is not transmitted to the raft.

3-) There is a 100cm thick raft floor in the picture and there is 1.50 protrusions from all over the building, there is still the same problem, the biggest displacement under the elevator curtains

If the ground safety stresses exceed in the middle region, it will not help much to enlarge the foundation area. If you attach the project file, we can examine whether there is a problem in terms of data entry. Good work