| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure of a lining body, its execution method, and a flexible cut-off plate in a cast-in-place lining shielding construction method for forming a tunnel as a flexible structure. SOLUTION: Ring-shaped steel plates 2a and 2b are arranged on both sides of a position desired to arrange a joint 5 on an outer peripheral surface of an inner form, lining concrete is placed, and when stainless steel packing 24 passes through the ring-shaped steel plate 2b, the ring-shaped steel plate 2b is fixed to the lining body 1b by using an anchor bolt 8. When an end frame reaches a position of a spacer, placing of the lining concrete is temporarily interrupted. After solidifying the lining concrete, a water cutoff seal 11 is embedded in the joint 5, the placing of the lining concrete is resumed, and another one ring-shaped steel plate 2a is fixed to the lining body 1a by using the anchor bolt 8. After separating the inner form, an omega cutoff seal 3 is fixed to the fixed paired ring-shaped steel plates 2a and 2b to form the flexible cut-off plate 6.
|
