PURPOSE:To enable a steel pipe sheet pile wall to be easily jointed to a reinforced concrete floor slab by fixing the main reinforcement of the slab to a reinforcement jointing member, and connecting the member to the side of the wall via a plurality of connection members laid at a gap in a vertical direction. CONSTITUTION:The lower side of a lower reinforcement jointing member body 22 having a preliminarily welded lower connection member 6, is fastened to the steel pipe 17 of a steel pipe sheet pile 4 by welding the member 6 to the steel pipe 17. Thereafter, an upper member 6 is fastened to the upper side of another body 22 and the steel pipe 17, and the lower reinforcement 22 is passed through the reinforcement through-hole 8 of a side plate 7. Also, an anchor plate 9 is coupled to the end of the main reinforcement 22 and an engagement nut 12 is screwed into the end thereof. Also, a cover plate 13 is fixed to the upper side of the body 22, thereby constituting a reinforcement jointing member 3. Then, a spacer is fixed to the upper side of the member 3, and an upper jointing member 3 is constituted via a similar work. Thereafter, the internal space of the upper and lower jointing members 3 is filled with a solidifying agent 10, the steel pipe 17 is filled with concrete 18, and floor slab concrete 19 is placed.
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