REINFORCEMENT MEMBER AND REINFORCEMENT METHOD OF WATER AREA STRUCTURE

To provide a reinforcement member and a reinforcement method of a water area structure which easily perform reinforcement of a water area structure compared with conventional ones and which can reduce work labor.SOLUTION: A reinforcement member of a water area structure comprises: a plurality of strut members 11 having an expansion and contraction function serving to reinforcement of a lower structure and being connected, in a lower space of an upper structure and underwater; and connection portions 12 respectively provided at both end portions of the strut member 11 and capable of being respectively connected with a plurality of piles 20 of a pile group. Since the plurality of strut members 11 is made to be an integrated strut member 16 capable of rotating around a hinge portion 15 as an axis by connecting the connection portions 12 with each other at a joining portion by the hinge portion 15, the plurality of strut members 11 can be installed by installing one reinforcement member 10. Thus, since it can reduce a labor for installing all the strut members 11 by more than a half compared with conventional ones, reinforcement of a water area structure becomes easier compared with conventional ones.SELECTED DRAWING: Figure 5 【課題】水域構造物の補強が従来に比して容易でかつ作業負担を軽減できる水域構造物の補強部材および補強工法を提供する。【解決手段】上部構造物の下部空間および水中で、下部構造物の補強に供する伸縮機能を有し、かつ連結された複数のストラット部材１１と、ストラット部材１１の両端部にそれぞれ設けられて、杭群の複数の杭２０にそれぞれ結合可能な結合部１２とを備え、複数のストラット部材１１は、連結部において結合部１２どうしをヒンジ部１５によって結合することによって、ヒンジ部１５を軸として回動可能な一体化ストラット部材１６となっているので、１つの補強部材１０を設置することによって、複数のストラット部材１１を設置することができる。したがって、従来に比して、全てのストラット部材１１を設置する手間を半分以上軽減できるので、水域構造物の補強が従来に比して容易となる。【選択図】図５