| 摘要 |
PURPOSE:To prevent the delayed destruction of an FRP reinforcing material and maintain a stabilized anchoring state more than 24 hours by connecting with couplers wedge sleeves wherein wedge angles are make larger from the tops to the ends step by step. CONSTITUTION:Wedge sleeves 3a and 3b externally fitted on an FRP reinforcing material A are connected with couplers 5a internally fitting elastic bodies 6a, and wedges 4a of the wedge sleeves 3a are pushed from the rear. The wedges 4a divided into a plurality of wedges are pushed inside the wedge sleeves 3a to adhere the surface of an inside diameter to the FW reinforcing material A. When pressed concrete is manufactured, the combinations of the wedge sleeves 3a, wedges 4a and couplers 5a are connected in series, and a tensionning tension bar is connected to the endmost coupler 5a to pull. By making an angle of the wedge larger from the top to the end successively, anchoring force corresponding to tension of the FRP reinforcing material A is equally distributed to the wedges 4a, and concentrated stress generated in the front end of each of the wedges 4a is reduced. |
