Double-raft structure of LNG storage tank foundation

The utility model relates to the field of LNG (liquefied natural gas) storage tanks, and discloses a double-raft structure of an LNG storage tank foundation, which comprises a first raft, a plurality of pile foundations are uniformly mounted on the first raft and penetrate through the first raft, and the pile foundations are arranged at the lower end of a second raft. A plurality of second supporting columns are evenly and fixedly installed at the lower end of the second raft plate, the bottoms of the second supporting columns are sleeved with first supporting columns, the lower ends of the first supporting columns are fixedly connected with the upper end face of the first raft plate, two fixing side plates are symmetrically and fixedly installed at the upper end of the second raft plate, and installation screw rods penetrate through the two fixing side plates in a threaded mode; the mounting screws are parallel to the horizontal line, twisting handles are fixedly mounted at the ends, away from each other, of