Corner structure of liquefied gas storage tank

A corner structure disposed at a corner of a liquefied gas storage tank and supporting a sealing wall adapted to prevent leakage of liquefied gas, the corner structure comprising:

• a stationary member secured to an inner surface of a hull structure wall;
• a movable member disposed on the stationary member such that the sealing wall is joined to the movable member;
• and
• an insulating member interposed between the sealing wall and the hull structure wall,
• wherein the stationary member comprises a stationary member body bent at a curved portion thereof in an opposite direction to the movable member and the movable member comprises a movable member body bent at a bent portion thereof in an opposite direction to the stationary member;
• and
• wherein the stationary member is coupled to the movable member by a fastening member penetrating the curved portion and the bent portion,
• wherein one movable member is coupled to the hull structure wall through multiple stationary members, and wherein:
• the stationary members are coupled to a central portion and opposite ends of the movable member, respectively;
• the movable member body is formed at the central portion and the opposite ends with coupling holes through which fastening members pass, respectively, for coupling between the stationary members and the movable member;
• and
• the coupling hole formed at the central portion of the movable member body has a circular shape and the coupling holes formed at the opposite ends of the movable member body have an elongated-hole shape extending in a longitudinal direction of the movable member body.