| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure for concrete forms which can allowably correct an error at a joining part when a concrete form is deformed and displacement occurs in concrete form installation positions at the construction of a tunnel, and joint holes do not coincide with each other, and can adjust the allowable error, and a joining method.SOLUTION: A protection sleeve 1 is inserted into a joint hole 39-(n+1) formed at an inter-ring joint plate 37-(n+1), and a protection sleeve 3 is inserted into a joint hole 39-n formed at an inter-ring joint plate 37-n. Next, the most suitable tapered sleeve 5 is selected out of a plurality of tapered sleeves, and installed in a space which is formed by the communication of the inside of the protection sleeve 1 and the inside of the protection sleeve 3. After that, a machine bolt 11 is inserted into a bolt hole 21 of the tapered sleeve 5 from the protection sleeve 1 side via a washer 7, a nut 13 is screwed to an end 51 of the protection sleeve 3 side via a washer 9, and the protection sleeve 1 and the protection sleeve 3 are fixed to each other, thus completing a joint structure 2a. |
