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New Durability Assurance Technologies for the Shenzhen–Zhongshan Cross-Sea Bridge
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(1.Shenzhen–Zhongshan Link Administration Center, Zhongshan 528400, Guangdong Province, China; 2.Guangdong Highway Construction Co., Ltd., Guangzhou 510699, Guangdong Province, China; 3.CCCC Highway Consultants Co., Ltd., Beijing 100010, China)

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    Abstract:

    The Shenzhen–Zhongshan Link (Shenzhong Link) is the world's first integrated cross-sea cluster project featuring a "bridge-island?tunnel-undersea interchange", and it is a key national project. The main structures include a 17-kilometer-long sea-crossing bridge and a 6.8-kilometer-long submarine tunnel. The project officially opened to traffic on June 30, 2024, with an average daily traffic volume of approximately 90,000 vehicles. Owing to the alternating loads from vehicles as well as wind, waves, and currents, fatigue issues are prominent. Moreover, the structures are exposed long-term to a marine environment characterized by high temperature, high humidity, and high salinity (fog), leading to severe corrosion problems. Considering that both corrosion and fatigue, as well as their coupled effects, significantly impact structural durability, this paper conducts research on key technologies for ensuring the durability of the Shenzhen–Zhongshan Cross-Sea Bridge, with a particular focus on marine concrete, steel beams, and main cables.

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引用本文

Huanyong Chen, Di Wang New Durability Assurance Technologies for the Shenzhen–Zhongshan Cross-Sea Bridge. Prestress Technology 2025,3(01):35-47. 10.59238/j. pt.2025.01.003

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History
  • Received:November 26,2024
  • Revised:January 22,2025
  • Adopted:
  • Online: March 29,2025
  • Published: