In coastal regions spanning bays,the marine climate is prominent,and the overhead contact system,installed along lengthy sea-crossing bridges with no redundancy,is constantly exposed to severe conditions such as strong typhoons,intense corrosion from salt spray,and the expansion,contraction,and displacement of the long-span bridge.These challenging circumstances pose numerous difficulties and obstacles for the overhead contact system.Based on the construction and operational experience of southeast coastal high-speed railways in China,this paper,grounded in the service characteristics of the overhead contact system,investigated a series of critical technologies addressing wind resistance,corrosion prevention,and compatibility with expansion,contraction,and displacement mechanisms of long-span bridges,and examined the challenges posed by strong typhoons,severe corrosion,and the unique environments presented by long-span bridge structures.Furthermore,it proposed targeted,specific measures and solutions for these issues to guide the construction and maintenance of coastal electrified railway systems.
NETL
NSTL
维普
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