Not architectural.
Pieces held in place by a shear pin or hard pin, 1 & 1/8" bore, definite wear patterns on one edge as if used as some type of cam, piece with welded on rounds has obvious wear (sloppy welds and probably put on unevenly which caused a lot of wear in high ones), no sign of having a nut on a threaded rod as use for building supports (wouldn't have used a pin to hold). Welded on rounds appear to have been put on a star type piece, also small part is a match to a tooth on the star.