A common method of repairing old riveted structures is to replace any damaged rivets with new high strength bolts.
When this is done, the new bolts are typically installed like they would be on a new structure which results in a bolt pretension. My concern is that the one bolt location might be effectively slip-critical while the rest of the existing rivets are something less than slip-critical. This may concentrate stresses on the one bolt.
When new high strength bolts are installed within an array of existing rivets, is there a concern with stress concentrations resulting from the increased clamping force from the bolt?