Base plate watertightness device is worn to pre -buried festival of tower crane

The utility model provides a base plate watertightness device is worn to the pre -buried festival of tower crane, includes tower crane basis, graded sand and stone backfill layer, bottom plate bed course, soleplate, pre -buried festival of tower crane and waterproof layer and the waterproof additional layer of building at the successive layer base. The utility model discloses an it has the angle steel to bond all around at pre -buried section stand on the tower crane, turn over on the waterproof layer and use polyurethane sealant to seal between all mouthful of partial upper end and pre -buried section stand on the tower crane, polyurethane sealant seal and the opposite joint of angle steel between be equipped with and meet sealing rod under the water inflation, be equipped with in angle steel plane upper end and meet the water inflation and go up the way extension groundwater of sealing rod and permeate the route, increase the infiltration degree of difficulty, to groundwater infiltration carrying on effecti