Abstract
Deterioration due to corrosion of the main cables on long-span suspension bridges is a worldwide concern. As part of an ongoing project, wireless sensors have been installed in the north anchorage of the Humber Bridge, which is the UK’s longest suspension bridge with a total length of approximately 2 km. The wireless sensor network (WSN), which consists of ten relative humidity and temperature sensors, allows the environmental conditions in the north cable anchorage to be assessed in real-time from anywhere via an internet portal. The sensors were deployed in a variety of locations including next to the main cable strands, providing an improvement over the existing wired system. The installation was not flawless, however, as difficulties with radio transmission meant that the full system was not operational until these problems were overcome. When developing a WSN, careful consideration needs to be given to the choice of software and hardware so that the deployment is efficient and robust in terms of communication and battery life. The network has demonstrated it is capable of capturing the environmental conditions both in terms of daily variations and critical events. These data can be analysed and presented in a concise and customisable fashion, allowing for future savings on energy, maintenance and inspection costs.
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Schedule a callMore From: Proceedings of the Institution of Civil Engineers - Bridge Engineering
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