Temporary cut-off structure used for bridge pier repair and reinforcement work

摘要

To provide a cofferdam structure used for maintenance and reinforcement work of a bridge pier on a complete water cut-off structure.SOLUTION: A plurality of divided wall members 2 form a cofferdam structure A used for bridge pier maintenance and reinforcement work, which is configured in a cylindrical body surrounding the outer periphery of a bridge pier 1, by being connected in the circumferential direction and the height direction of the bridge pier 1 via a water cut-off member 4. The water cut-off member 4 interposed between the adjacent divided wall members 2 is the cofferdam structure used for bridge pier maintenance and reinforcement work, and is composed of a three-layer structural material with a water-swelling seal 6 attached to the front and back surfaces of a packing 5.SELECTED DRAWING: Figure 2