| 摘要 |
PROBLEM TO BE SOLVED: To provide a rainwater storage structure which is high in strength as a structure, and excellent in transportability, compactness, and workability. SOLUTION: The rainwater storage structure 1 is implemented by a skeleton structure 2 constructed by accumulating a plurality of block layers on each other, which block layers are each obtained by horizontally arranging a plurality of skeleton blocks side by side under the ground. Rainwater is stored in spaces defined by the skeleton blocks of the skeleton structure 2. The skeleton blocks include conical full-size blocks 11 and conical half-size blocks 12. Each skeleton block is formed of a substrate 20, and a plurality of conical frame bodies 21 erected on an upper surface of the substrate 20 at intervals, and fitting grooves formed in a lower surface of the substrate 20. When the conical full-size blocks 11 and the conical half-size blocks 12 vertically adjoining each other are accumulated on each other, a top portion of the conical frame body 21 of each of the conical full-size blocks 11 and the conical half-size blocks 12 in a lower layer is fitted into the fitting groove of each of the conical full-size blocks 11 and the conical half-size blocks 12. COPYRIGHT: (C)2007,JPO&INPIT
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