How do i export individual assets from blender but make it keep the shape and structure when in UE4

I want to create a watch tower that can break. I’ve created all the single parts for the tower and i created the tower on blender. but when i add the tower to UE4. It imports as single assets. which is what i want but i don’t want to recreate the complex tower as it contains 61 assets (some of which is small like Pegs). However, i don’t want it to be a single object too as i want it to be capable of being broken by the player using Engine Physics. Please help ASAP. :frowning: