LARGE-SIZED COLUMNAR BODY MADE OF FIBER-REINFORCED PLASTIC

摘要

PROBLEM TO BE SOLVED: To provide a large-sized columnar body made of an FRP (fiber- reinforced plastic), whose compression strength is improved and which is lighter in weight and has high safety. SOLUTION: A large-sized columnar body 1 made of a fiber-reinforced plastic has at least three layers of an [A] 2, a [B] 3 and a [C] 4 which are adjacent to one another and are formed of a fiber-reinforced plastic composed of continuous reinforcing fibers and resin. The reinforcing fibers of the [B] 3 are carbon fibers arranged in the longitudinal direction of the columnar body 1, and the reinforcing fibers of the [A] 2 and the [C] 4 are carbon fibers or glass fibers arranged at±50-±70 degrees in the longitudinal direction of the columnar body 1.