Shear force and axial force distribution to bolt group

[BendingMoment123]

Hi guys

I have beam (beam 2) bolted to the underside of beam 1. Beam 1 is welded to a 30 mm plate which has 10 bolts (5 on either side) anchored into the rock above. The shear fore (V) is eccentric to the centroid of the bolt group, so it would put some bolts in tension. But i'm not worried about that, as the axial force (C) is a very large compressive force.

- Is it safe to assume that force V can be distributed equally among the 10 bolts (V/10)? All bolts and holes are the same size.
- What dispersion angle would you assume for the axial force (45 degrees?)

 

[BridgeSmith]

Theoretically, there will be greater compression at some locations than others, but I don't see how that would affect the distribution of the shear forces, so yes, I would think you could distribute the shear force equally to the bolts.

Rod Smith, P.E., The artist formerly known as HotRod10

 

[rb1957]

I would follow the loadpath.

what are the loads in the bolts joining 2 to 1 ?

then look at the load in 2 being applied to the bolt group center (direct load and moment).

then can beam 1 redistribute the loads 2-1 to the loads to ground ? What are the internal loads in 1 like ? Is 1 flexible so that the bolt group reactions are unlikely ?

Why not align beam 2 and the bolt group center ?

another day in paradise, or is paradise one day closer ?