| 摘要 |
PROBLEM TO BE SOLVED: To easily set a form, in particular, to improve work efficiency relating to form setting in a tunnel curved part and to suppress reduction in quality of lining concrete.SOLUTION: A telescopic form is provided which comprises: a chamfer strip member 6 which is provided in an articulated section T between arch forms 3A, 3B disposed in a front-back direction and includes: a second chamfer strip body 62A of a second chamfer strip material 62 with which a smooth face 62a is provided of which a tunnel cavity-side surface becomes flush with a surface of lining concrete 2; and a second protruding rib 62B which protrudes from the smooth face 62a of the second chamfer strip body 62A to a tunnel cavity side and can be locked through a first protruding rib 61B of a first chamfer strip material 61 to a front end plate 35A of the second arch form 3B. In a state where the chamfer strip member 6 is locked to the second arch form 3B, the first arch form 3A is overlapped to the smooth face 62a, and a gap is formed between the second arch form 3B and the first arch form 3A. |
