Double-hoop support structure

The utility model discloses a double-hoop support structure which comprises a supporting column, an upper hoop, a lower hoop and two connecting supporting pieces. Each of the upper hoop and the lower hoop comprises two clamping pieces clamped on the two sides of the supporting column, and the ends, in the same direction, of the clamping pieces of the upper hoop and the lower hoop are locked and fixed to the upper portion and the lower portion of the connecting supporting piece through bolt sets respectively; the connecting and supporting piece comprises a connecting plate for locking the clamping piece and a supporting plate vertically connected to the upper end of the connecting plate, and the supporting plate is used for installing a frame of the cast-in-place box girder. According to the utility model, the upper hoop and the lower hoop are fixed by using the connecting support piece, the relative fixation of the upper hoop and the lower hoop is realized by the connecting plate, and the holding force of the