CONSTRUCTION METHOD OF REINFORCEMENT STRUCTURE FOR EROSION CONTROL DAM, AND REINFORCEMENT STRUCTURE OF EROSION CONTROL DAM

To provide a construction method of a reinforcement structure for an erosion control dam that enhances abrasion resistance and impact resistance of a top edge surface of the erosion control dam and is compatible with unmanned construction.SOLUTION: A reinforcement structure 3 includes a first steel member 61 and first elastic members 51a, 51b that form a dam-like body, the first steel member being installed on a top edge surface 37 of an erosion control dam 5 and the first elastic members surrounding a side surface of the first steel member 61. The reinforcement structure further includes concrete 91 placed on the top edge surface 37, and a protection member 8 installed on the concrete 91. The protection member 8 comprises a second steel member 15 made of an L-shaped member, and a second elastic member 52 fixed on the second steel member 15. The protection member 8 is installed by descending onto the first steel member 61 and the concrete 91 before curing, from a position indicated by a two-dot chain line. The configuration enables installation of the protection member 8 using a helicopter and the like, at the same time enhancing safety and reliability of construction work for the reinforcement structure 3, and making the construction method compatible with unmanned construction.SELECTED DRAWING: Figure 9 【課題】 砂防堰堤の天端面の耐摩耗性及び耐衝撃性を向上させると共に、無人化施工に対応することの出来る砂防堰堤の補強構造体の施工方法を提供する。【解決手段】 補強構造体３は、堰状体を構成する、砂防堰堤５の天端面３７上に設置された第１鋼製部材６１と、第１鋼製部材６１の側面を囲う第１弾性部材５１ａ、５１ｂとを備えている。更に、天端面３７上に設置されたコンクリート９１と、コンクリート９１に設置された保護部材８とを備えている。保護部材８は、Ｌ型部材よりなる第２鋼製部材１５と、第２鋼製部材１５上に固定された第２弾性部材５２とから構成されている。そして、保護部材８は、第１鋼製部材６１及び硬化前のコンクリート９１に、二点鎖線で示した位置から降下させて設置する。従って、ヘリコプター等での保護部材８の設置が可能となり、補強構造体３の施工の安全性及び信頼性が向上すると共に、無人化施工に適した施工方法となる。【選択図】 図９