Sorry, it's my mistake. The model were meshed but it's too rough. when you mesh the model, the load will be transfer to the beams. you may try to increase the number of the mesh to see the differences. and about the end fixed beam, I see your point. Though, it has nothing to do with the issue.
I have run your attached file.
What I see in your model are:
one beam has both end released and the other is fixed.
also the ramps were not meshed.
I suggest you select both the ramps then go to the assign menu ->shell/area -> area oblect mesh options.
under ramp and wall meah options, select...
