RAILWAY SLEEPER MADE OF COMPOSITE MATERIAL AND MANUFACTURING METHOD THEREFOR

摘要

Disclosed are a railway sleeper made of a composite material and a manufacturing method therefor. The railway sleeper comprises a basic section bar extending in the longitudinal direction. The basic section bar is provided with a cavity passing through the basic section bar in the longitudinal direction. The basic section bar is made of a fiber-reinforced resin matrix composite material. The fiber-reinforced resin matrix composite material comprises resin and a fiber-reinforced material. The fiber-reinforced material comprises fiber felt and fiber yarn. The fiber felt is laid around the cavity in the basic section bar. A plurality of pieces of fiber yarn exist and are distributed nearby the fiber felt in the longitudinal direction. Moreover, the fiber felt is laid into a unit in the basic section bar or a plurality of units arranged in sequence from the inner layer to the outer layer of the basic section bar. Each unit of the fiber felt comprises a plurality of pieces of fiber felt that are laid around the cavity.