Usually the transfer of forces in a elastic analysis is made by the following criteria:
- The stiffer the object the more force will attract to its element
So you are not crazy getting these results, but there is a catch:
When the structure get into an non linear domain, that knee braced...
There are some thoughts I want say:
-For slabs on the ground, in general the major restriction for lateral movements is the soil friction.
-The edge thickening in the slab may provide some degree of lateral restriction but shouldn't be taken into account unless the friction is overloaded, which...