| 摘要 |
PROBLEM TO BE SOLVED: To provide the cut-off structure of a joint part frame body in an underground structure for obtaining high cut-off performance by closing a clearance between a joint frame body and a concrete base body. SOLUTION: The structure 10 is integrally provided with the frame body 12 at the inner peripheral side corner part of a connection end face of the concrete base body 11. The cut-off structure is constituted by interposing a water absorptive swelling material 31 provided with a high water absorptive resin 31A, between the frame body 12 and the concrete base body 11, and interposing an inner peripheral side flow impeding material 32 on the inner side and an outer peripheral side flow impeding material 33 on the outer side respectively. COPYRIGHT: (C)2005,JPO&NCIPI
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