| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flexible joint formation method for a concrete box body, which easily can secure a joint between the concrete box bodies, even when a reaction force of jack thrust is received.SOLUTION: A concrete box body 4 includes right and left side wall panels and upper and lower floor panels, and front and rear end surfaces are opened as openings. The concrete box bodies 4 are arranged in file to receive a reaction force of jack thrust. A gap holding material plate 15 is arranged between end surfaces of the concrete box bodies, so that the concrete box bodies 4 can be arranged. The gap holding material plate 15 is extracted from the inside of the concrete box body 4 later.</p> |
