The application discloses a large-scale LNG ship
bilge strong frame structure, which comprises an upper small group, a central group and a lower small group, the upper end of the central group is provided with the upper small group, the lower end of the central group is provided with the lower small group, the central group comprises a strong frame knee plate, a large rib plate opening and a partition rib, the middle part of the end face of the strong frame knee plate is provided with the large rib plate opening, the end face of the strong frame knee plate around the large rib plate opening is provided with the annular partition rib, and the strong frame knee plate is integrally formed. The strong frame structure is integrally manufactured, the large-hole structure is adopted on the strong frame, the design can reduce the panel between the upper rib plate and the lower rib plate, the structure is simpler, and the production cost is reduced.