How to calculate shearing force of the bolt?

Hello...everyone,
Could you teach me how to calculate shearing force of the bolt in this figure?
shear_force.jpg

Unusual pipe joint (for engineering purposes).
Before applying, try to improve a connection: perhaps using a flange-shaped connection (to avoid a shear stress in bolts from axial force N and becoming a better bending rigidity).
If necessary, check a general stability of pipe (under simultaneusly consideration of all loadings).

Best regards!

congestus