| 摘要 |
PURPOSE:To permit tightening work to be easily further simply performed by drilling a through hole tilting, inserting a connecting bolt penetrating through the through hole and connecting the bolt to be screwed to an insert nut embedded tilting. CONSTITUTION:Connection end surfaces are placed facing of both concrete segments 2, 4 of large bore providing a dislocation preventing reinforcement plate 7 therebetween. Next, a through hole 5 for a connecting bolt is drilled tilting in a direction of internal peripheral surface from the central part in a width direction of the segments 2, 4, inserting the connecting bolt 6. And the connecting bolt 6 is screwed to an insert nut 3 embedded tilting in the peripheral direction from the central part in the width direction of the segments 2, 4. In this way, tightening work can be performed in a short time while enabling the tightening work to be performed not in the inside position but in the internal peripheral surface position of the segments 2, 4. |
