ANCHORAGE DEVICE FOR FRP TENDON

PROBLEM TO BE SOLVED: To anchor a plurality of FRP tendons applied with tensioning force in a small space without damaging an FRP tendon with a wedge.SOLUTION: An anchorage device for FRP tendon has: a plurality of grip members 2 which are pressed against outer peripheral surfaces of the plurality of FRP tendons 1 at end parts along axes; an outer pipe 3 having end parts of the plurality of FRP tendons, against which the grip members are pressed, inserted into a through hole 3a; and a wedge 4 which is pressed in between the grip members and an inner peripheral surface of the through hole. The plurality of FRP tendons 1 are held between pluralities of grip members at mutually separate positions, respectively, and the wedge 4 is pressed in between the inner peripheral surface of the through hole and an outer peripheral part of the grip members 2 bundled with the FRP tendons held therebetween. The grip members 2 have a length of projection in a direction in which the FRP tendons are extended from a range in which the wedge is pressed, and also have tip parts coupled by a steel plate 5. The part where a grip member 2 projects is gradually reduced in press-contact force to an FRP tendon 1 when the wedge 4 is pressed.SELECTED DRAWING: Figure 1 【課題】くさびによってＦＲＰ緊張材を損傷することなく、少ないスペースで緊張力が導入された複数のＦＲＰ緊張材を定着する。【解決手段】複数のＦＲＰ緊張材１の軸線に沿って端部の外周面に圧接される複数の把持部材２と、把持部材が圧接された複数のＦＲＰ緊張材の端部が貫通孔３ａに挿通される外管３と、把持部材と貫通孔の内周面との間に圧入されるくさび４と、を有する。複数のＦＲＰ緊張材１のそれぞれは、互いに分離した位置で複数の把持部材間に挟み込まれ、ＦＲＰ緊張材を挟み込んで束ねられた把持部材２の外周部と貫通孔の内周面との間にくさび４が圧入される。把持部材２は、くさびが圧接される範囲からＦＲＰ緊張材が伸長される方向に突き出す長さを有し、先端部が鋼プレート５で連結されている。この把持部材２の突き出した部分は、くさび４が圧接されたときにＦＲＰ緊張材１に対する圧接力が徐々に低減される。【選択図】図１