Technical Challenges in the Artificial Island and Immersed Tunnel Works of Hong Kong-Zhuhai-Macao Bridge Project
The artificial island and immersed tunnel works of the Hong Kong-Zhuhai-Macao Bridge project is the controlling works of the entire bridge project,facing various difficulties such as poor geological conditions,high off-shore operations risks,high construction standards,and tight schedules.It has become the longest highway im-mersed tunnel in the world after completion.The Hong Kong-Zhuhai-Macao Bridge was officially opened in 2018,and the main project passed the completion acceptance in 2023.This paper re-examines the difficulties and technical challenges faced during the construction of the Hong Kong-Zhuhai-Macao Bridge.Adhering to the construction con-cept and focusing on scientific and technological management,the bridge builders formed several key technologies through research and practice,such as rapid artificial island formation in the sea,foundation treatment and settle-ment control of immersed tunnel in deep soft soils,and prefabrication of tunnel elements in factory.These achieve-ments have strongly supported the construction of the artificial island and tunnel project,laid the foundation for sub-sequent large-scale river and sea-crossing artificial island and tunnel projects,and contributed Chinese wisdom to the construction of sea-crossing artificial island and tunnel projects in the world.
Hong Kong-Zhuhai-Macao BridgeImmersed tunnelArtificial islandTechnical challengesFactory production
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