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    • 6. 发明专利
    • Joint Gap for a water stop device and the shuttering board
    • JP5306590B2
    • 2013-10-02
    • JP2006318349
    • 2006-11-27
    • ニッタ株式会社
    • 佳宏 宮城翼 近藤隆文 石塚
    • E01C11/02E01D19/06
    • PROBLEM TO BE SOLVED: To increase the efficiency of expansion gap treating work in the construction work of mounting an extending and contracting device in an expansion gap, and to improve the strength for supporting the extending and contracting device. SOLUTION: Anchor bolts 22A (22B) are attached to an anchor 26A (26B) provided on a floor system 25A (25B) in a box removing part 24A (24B) formed in an end part of a bridge girder. Tips of the anchor bolts 22A (22B) project slightly into the expansion gap 20, and the sheathing board 11A (11B) is attached to the tips. The sheathing board 11A (11B) is composed of a sheathing board body 110A (110B) made of a hard material and a flexible part 111A (111B) made of a soft material. The flexible part 111A (111B) is obliquely extended from a lower side part of the sheathing board body 110A (110B). The flexible part 111A (111B) is pressed against a side wall in the end part of the bridge girder 21A (21B) forming the expansion gap 20 and adheres closely to the side wall in the end part where unevenness exists to prevent leakage of concrete when placing concrete. COPYRIGHT: (C)2008,JPO&INPIT