Screw pile type jacket device for offshore booster station and construction method of screw pile type jacket device

The invention discloses a screw pile type jacket device for an offshore booster station and a construction method of the screw pile type jacket device. The screw pile type jacket device comprises a jacket unit, a screw pile unit and a middle connecting pile shoe unit. Each jacket unit comprises a vertical chord member and an inclined chord member; each spiral pile unit comprises a straight part located on the upper portion and a spiral part located on the lower portion, and the spiral pile units are detachably and fixedly arranged at the ends of the middle connecting pile shoe units; the middle connecting pile shoe unit comprises a plurality of sets of pile shoe clamping plates and hoop structures which are horizontally arranged at intervals and connected in a hinged mode. According to the jacket device, the middle connecting pile shoe unit is arranged to facilitate connection and installation of the jacket unit and the spiral pile unit, in addition, the spiral pile is adopted to replace an existing pile leg,