COMPOSITE MATERIALS IN METRO STRUCTURES: THE EXPERIENCE OF TOKYO METRO

This paper analyzes the structural, technological, and operational advantages of composite materials used in metropolitan infrastructure. Utilizing the Tokyo Metro in Japan - a region of high seismic activity - as a primary case study, the practical application of fiber-reinforced polymers, including GFRP, CFRP, and BFRP, was investigated. The findings indicate that composite materials substantially enhance the seismic stability, corrosion resistance, and overall service life of metro structures.