In order to complete the construction of the Shenzhen-Zhongshan Link subsea tunnels with higher efficiency and quality,the high-precision and rapid docking of subsea tunnels has become a major challenge.Taking into account the characteristics of the ultra-wide steel-shell immersed tube tunnels,a high-precision and rapid docking technology for the Shenzhen-Zhongshan Link tunnels,and a set of positioning control systems for the head and tail locations of the immersed tubes was proposed,which includes multi-system linkage technologies such as mooring system,Beidou positioning and measurement control technology,and integrated barge control system.Through practical application,the maximum absolute deviation of the central axis and the maximum lateral relative deviation of the immersed tube tunnel of the Shenzhen-Zhongshan Link were both controlled within the design deviation of±5 cm.The results indicates that the integrated barge for transportation and installation has significant advantages during the high-precision docking process,which provides strong support for the construction of immersed tube tunnels in China.
Shenzhen-Zhongshan Linkimmersed tube tunnelhigh-precision dockingintegrated barge for transportation and installationconstruction technology
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