How is load transfered?

[n3jc]

Im wondering how is load stransfered here.
RC beam is partly integrated into RC slab. There is a bearing masonry wall on top of RC beam (over entire lenght of the beam). Since beam is almost 6 m in span, but distance from slab to wall is only 0,80 m, does that mean that load gets transfered through slab too since distance from beam to wall is short and loads always took the shortest path?

Im asking this because I get so much different results when calculating this as 2d problem in FEM software comparing to hand calculation where I only consider beam and a load on it.

 

[DETstru]

RE: your post edit.

Re-looking at the details, both the wall and the slab seem to be discontinuous at the intersection, so it may be quite flexible. In that case i would probably just ignore the wall as support

Agreed!

 

[hokie66]

I think you have misinterpreted my comments about load taken by the wall. I was talking about the wall above, the one on top of the beam, spanning between the columns. If that wall is reinforced appropriately, it would act as a deep beam.

 

[AaronMcD]

"Not sure I understand what you're getting at here."

Well, since we are now discarding any cantilever action, which is definitely the easiest way to analyze the problem at hand, nothing apparently.

But in general, that's one of the first things I notice when designing cantilevers for strength. Backspan/connection may have some flexibility which is important for deflection and in this case to determine load path, but an ideal (fixed end) cantilever is just half of a simple span (inverted of course). So if I have typical simple span sizes, loads, and spans on a project, I know the same size member can cantilever half the distance for strength.

-----

Hokie66, yeah I understood what you meant. The OP was considering the concrete wall. I agree with you that the wall above may take some load. I would not design it as such, but considering it will be in compression (assuming the dowels act in shear) my guess is that it will provide significant strength and stiffness.

 

[hokie66]

Ideal, fixed end, cantilevers are rare in concrete structures due to the difficulty of chasing the stress around the corner. Even when detailing and construction are carefully done, efficiency of these corners does not approach 100%.