| 摘要 |
PROBLEM TO BE SOLVED: To provide a cut-off joint for an element, which can cope with a construction error and which does cause a problem such as rolling in excavation using the element, and a construction method for the cut-off joint. SOLUTION: A joint structure of the element is used for constructing an underground structure by inserting a plurality of elements into natural ground by juxtaposing them, while a male joint 32 and a female joint 31, provided in the axial direction of each of the elements, are fitted together between the adjacent elements 21 and 22. In a joint part 30, a fixed gap 40 is made between an inner surface of the female joint 31 and the male joint 32 in a fitted state, and a cut-off material 50 composed of a flexible material is arranged in the gap 40, so as to prevent leakage of water from between the adjacent elements 21 and 22. COPYRIGHT: (C)2005,JPO&NCIPI
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