| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the need for temporary receiving of an arch girder by a bent. SOLUTION: Attachment parts 20, 20 each provided with an arcuate arch rib base part 21 are constructed on arch abutments 2, 2, respectively, and an arch girder 10 provided with an arcuate arch rib part 11 is lowered between both the attachment parts 20, 20 by a crane C. This work is so set that a clearance w1 is formed between each of both ends 11a, 11a of the arch rib parts 11 and each of both upper ends 21a, 21a of the arch rib base parts 21, 21. A reception part 32 provided in the arch rib part 11 is pressed by axial force transmitting means 30 provided in the arch rib base part 21, and the arch rib part 11 and the arch rib base part 21 are connected together in a state that axial force transmission is possible in an axial direction to construct an arch structure 3. The clearance w1 is set between the arch rib part 11 and the arch rib base part 21, and while the arch girder 10 is suspended by the crane C, the arch rib part 11 and the arch rib base part 21 can be connected together by pressing the reception part 32 by the axial force transmitting means 30. Therefore, the need for temporary receiving of the arch girder 10 by a bent B can be eliminated. COPYRIGHT: (C)2012,JPO&INPIT |
