Separated rod type overhead line system support structure

The utility model provides a split rod type catenary support structure. The construction structure comprises a plurality of overhead line system support structures distributed along a straight line, a positioning line parallel to a positive feeder line and a carrier cable, wherein each overhead line system support structure comprises a base, a supporting column, a flat cantilever, an inclined cantilever and a branch rod mechanism; during construction, each catenary support is independently constructed according to positioning, specifically, construction of a base and a supporting column, installation of an inclined cantilever and a flat cantilever and installation of a rod separating device are included, the rod separating device is connected with a positive feeder line and an auxiliary feeder line through two supporting rods, and the two supporting rods are connected with the inclined cantilever through positioning rods; the positioning line is suspended below the carrier cable through a plurality of dropper