I am trying to get a turret to stay on a platform that is comprised of many small func_physbox's. when I start the level, the turret is tipped over, or tipping over. How can I get it to stay there and stand upright (just for the start of the level, I still want physics applied) there are env_explosions and env_physexplosions underneath the platform set to go off, but I dont think that would effect anything

Use a phys_keepupright with the turret, and then disable it after a second or two, once the turret has settled into position.

Phys_keepupright and a phys_constraint to "weld" it to something else then disable them after a few seconds.