Abstract
The Taizhou Yangtze River Bridge (TZB), located in China, is the first three-pylon suspension bridge with the main spans over two kilometers in the world. After its construction in 2012, a heterogeneous structural health monitoring system (HSHMS) combining wireless and wired techniques was implemented for the structural health assessment of the bridge. A total of 275 sensors comprising of accelerometers, strain sensors, three-dimensional ultrasonic anemometer, thermo-hygrometer, global positioning system and temperature sensors were installed to collect structural and environmental parameters for the assessment. In this paper, the structural uniqueness of the TZB and its HSHMS were introduced first. As a landmark project, wireless smart sensors were adopted in the vibration monitoring of the suspension cables. Critical structural parameters variations were obtained based on the data analyses. The results show that HSHMS and wireless smart sensors are promising for the structural health assessment of the unique suspension bridge.
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