| 摘要 |
A shell for an outer LNG containment tank and a method of making the shell from a plurality of precast reinforced concrete shell elements are described. The shell elements having a precast concrete body to which are anchored a radially inwardly facing liner plate and a pair of circumferentially spaced apart side plates which depend radially outwardly from the liner plate. The shell elements can be arranged upon a ring beam with side plates abutting one another. The side plates are welded together to form radially and vertically extending stiffener ribs which are circumferentially spaced around the shell. As these stiffener ribs provide great structural support, the shell can be constructed with minimal or no cast in place structural joints being needed to construct the shell. Ideally, the shell elements have bottom base plates welded to a ring beam or foundation and top end plates that are welded together to form an annular ring thus enhancing the structural strength of the shell. A roof can be mounted to the shell to create an outer LNG containment tank.
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