Mechanical characteristics of thin PC decks using carbon fiber tendons

Abstract

In 2023, there are approximately 730,000 bridges nationwide in Japan. Of these, 477,000 bridges are managed by local municipalities. Many of these smaller bridges are structurally degraded, and these bridges often lack seismic resilience. Problems arise in replacing bridges due to densely populated areas and narrow surroundings. To address this, our study focuses on PC decks using carbon fiber tendons that are premanufactured and cut as needed, aiming to minimize burden on local residents and speed up construction. However, mechanical characteristics for thin PC decks remain uncertain. Therefore, it was clarified the mechanical characteristics and replaced the PC decks on an actual bridge.