| 摘要 |
PROBLEM TO BE SOLVED: To provide an antiseismic joint structure of segments capable of imparting earthquake resistance without changing the tunnel axial length of a male side engaging member. SOLUTION: The male side engaging member 6 comprises a locking member 3 having a locking protrusion 4 at the tip, and a case member 36 with a guide part fixed to the side face of one segment 2 while biasing the locking member 3 by a spring in the tunnel axial direction to support the locking member 3 in a forward movable manner. A female side engaging member 5 comprises a slide stopper holding frame 20 fixed to the side face of the other segment 1, and a slide stopper 12 supported movably in the radial direction of the tunnel by the holding frame 20, biased by a spring in a direction to close an entry part of the locking member 3 and capable of locking the locking protrusion 4. COPYRIGHT: (C)2005,JPO&NCIPI
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