| 摘要 |
PROBLEM TO BE SOLVED: To improve durability by improving rigidity and modulus of elasticity of a body of an FRP pipe, and preventing a ply separation at an end connected to another connecting member. SOLUTION: Connecting portions 2b in which base ends of yokes 3 are inserted are formed at both ends of a body 2a of the FRP pipe 2, and Vf of a portion of the portion 2b side is formed lower than Vf of the body 2a. In the pipe 2, as a reinforcing fiber, a carbon fiber is used, and as a matrix resin, an epoxy resin is used. The reinforcing fibers are formed as a helical winding layer 4 wound so that an angle to an axial direction of the pipe becomes substantially±10 deg. and a hoop winding layer 5 wound so that a winding angle is near 90 deg.. The layer 5 is formed only at the portion 2b, and disposed in the state interposed between the layers 4. A layer of an organic fiber having a heat shrinkage factor and wound in such a state that a winding angle is near 90 deg. is formed at an outside of the layer 4. |
