Vacuum preloading drainage structure

The utility model relates to the technical field of soft soil foundation treatment devices, in particular to a vacuum preloading drainage structure. According to the technical scheme, the drainage device comprises a connecting pipe fitting, vacuum filter pipes and a drainage belt, the two ends of the connecting pipe fitting are fixedly connected with the ends, at the corresponding positions, of the vacuum filter pipes, the side wall of the connecting pipe fitting is fixedly connected with a second connecting pipe head, and the end of the drainage belt is fixedly connected with a drainage belt connector capable of being fixedly connected with the second connecting pipe head. The outer wall of the drainage belt is sleeved with an armor, and the end of the armor is fixedly connected with an armor connector which can be detachably and fixedly connected with the drainage belt connector. Through the armored design, the drainage belt can be protected, the drainage belt is prevented from being corroded by sludge, and