DOUBLE SHEET PILE-TYPE AQUATIC STRUCTURE, AND CONSTRUCTION METHOD OF THE SAME

To provide a double sheet pile-type aquatic structure which is excellent in workability and can shorten a construction period.SOLUTION: A double sheet pile-type aquatic structure comprises: wall bodies 3, 3 disposed at both sides in a width direction and comprising a steel pipe sheet pile wall 2 in which steel pipe sheet piles 12 are continuously installed; a precast concrete floor slab 4 stretched between upper parts of the wall bodies 3, 3 at both sides in the width direction; and a primary concrete installation portion 5 and a secondary concrete installation portion 6 formed by installing concrete between an upper part of the wall body 3 and an end face 4T in a longer direction of the floor slab 4. A vertical perforated dowel steel plate 11 mounted on an upper face of the wall body 3 is provided at the end face 4T in the longer direction of the floor slab 4, and a plurality of perforated dowel steel plates 11 are provided with an interval in the width direction of the floor slab 4, so the floor slab 4 and the secondary concrete installation portion 6 are integrated by the perforated dowel steel plate 11. A workability is improved and a construction period can be shortened by using the precast concrete floor slab 4.SELECTED DRAWING: Figure 1 【課題】施工性に優れ、工期の短縮が可能な二重矢板式水上構造物を提供する。【解決手段】幅方向両側に配置され、鋼管矢板１２を連続して打設した鋼管矢板壁２を備えた壁体３，３と、幅方向両側の壁体３，３の上部間に架け渡されたプレキャストコンクリート製の床版４と、壁体３の上部と床版４の長さ方向端面４Ｔとの間にコンクリートを打設して形成した一次コンクリート打設部５及び二次コンクリート打設部６とを備える。床版４の長さ方向端面４Ｔに、壁体３の上面に載置する縦方向の孔あきジベル鋼板１１を設けると共に、この孔あきジベル鋼板１１は床版４の幅方向に間隔を置いて複数設けられているから、孔あきジベル鋼板１１により床版４と二次コンクリート打設部６との一体化を図ることでき、プレキャストコンクリート製の床版４を用いることにより、施工性が向上し、工期の短縮が可能となる。【選択図】図１