PIPE AND METHOD FOR MANUFACTURING PIPE

摘要

A pipe includes a tubular reinforced fiber structure, and a tubular matrix resin pipe main body centered on the central axis, together with a reinforced fiber structure, covering an internal side of the reinforced fiber structure on the central axis side, and an external side. An external end surface of the pipe main body has an inclined surface whose diameter is gradually reduced toward the end face, which connects the pipe main body to another pipe main body, with the main body inclined surface coupled to a substantially tubular-shaped coupling. A portion of the reinforced fiber structure near the main body inclined surface has a plurality of fiber bundles extending in parallel to the central axis. This prevents a shear failure of the fiber bundles of the reinforced fiber structure of the main body inclined surface.

主权项

1. A pipe comprising:
a reinforced fiber structure that has a tubular shape; and a matrix resin that covers an internal side, which is a central axis side of the reinforced fiber structure, and an external side of the reinforced fiber structure, thereby constituting, together with the reinforced fiber structure, a pipe main body that has a tubular shape centered on the central axis, wherein an external surface of an end portion of the pipe main body has a main body inclined surface whose diameter is gradually reduced toward an end face, when the pipe main body is connected to another pipe main body, the main body inclined surface is coupled to a coupling that has a substantially tubular shape, and the reinforced fiber structure includes: a first portion that is constituted by a plurality of fiber bundles extending in parallel with the central axis or by a woven structure of a plurality of fiber bundles, and that is arranged near the main body inclined surface; and a second portion that has a structure different from the structure of the first portion, and is arranged apart from the main body inclined surface.