2025 Volume 4 Issue 1 Pages 85-94
The center stays are a component that are designed to allow for damage during large-scale earthquakes; however, at the 1st Kurushima Kaikyō Bridge, damage due to fatigue has also occurred. Therefore, regular inspections are carried out using visual checks and ultrasonic testing. However, these intermittent inspections make it challenging to detect early stages of crack formation, propagation, or fracture. Recently, methods utilizing IoT technology and wireless strain measurement devices have been proposed for monitoring fatigue cracks. To establish a continuous remote monitoring method, wireless strain measurement devices were installed on the actual center stay rods of the bridge, and monitoring was conducted via a web platform. As a result, a fracture of the center stay rods occurred during monitoring, and it was confirmed that monitoring for signs of fracture and detection of the fracture are possible.
