Hong Kong - Zhuhai - Macao Bridge Monitoring
The Hong Kong–Zhuhai–Macau Bridge (HZMB), officially the Hong Kong–Zhuhai–Macao Bridge, is a 55-kilometre (34 mi) bridge-tunnel system consisting of a series of three cable-stayed bridges, an undersea tunnel, and four artificial islands. It is both the longest sea crossing and the longest fixed link on earth. The HZMB spans the Lingding and Jiuzhou channels, connecting Hong Kong, Macau, and Zhuhai—three major cities on the Pearl River Delta. With a total length of 55 km, the Hong Kong-Zhuhai-Macao Bridge is regarded as the longest sea bridge in the world.
One part of this monument’s structural health monitoring system is the measurement of tri-axial accelerometers at the navigation spans. The purpose is to detect the occurrence of the ship impacting as well as to determine the global dynamic characteristics of the structure’s viaduct bridges.
200 highest precision acceleration channels are needed, distributed over several kilometers. These channels are clustered into six independent data acquisition subsystems. The data of each subsystem are stored locally and in parallel to a database engine running on a central server.
See the complete case study.