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The precast immersed tube tunnel for the Hongkong-Zhuhai-Macao Bridge island and tunnel project has 22.5 m length, 37.95 m width, 11.4 m height, and the steel weight is 1 100 t, used the factory method for flow construction. The steel was partitioned banding in banding pedestal and was pushed in turn. It is different from the steel construction of general projects that, the steel cage accuracy of prefabricated immersed tube depends on the accuracy of binding, and also has closely related with the stiffness of steel cage, pushing and the accuracy of system conversion, and the deformation control during the process. The deformation control measures were adopted for the quality control of the prefabricated immersed tube steel cage in the Hongkong-Zhuhai-Macao Bridge island and tunnel project, and have achieved good results. [ABSTRACT FROM AUTHOR]

In order to meet the large-scale, industrialized, standardized construction concepts of the Hongkong-Zhuhai-Macao Bridge, through introducing advanced foreign equipment, improving construction technologies, using new technological inventions reasonably, we achieved the optimization of steel construction technology. The immersed tube tunnel prefabricated steel was processed by automatic steel processing lines, the steel cage construction used the streamlined regional banding process. This paper mainly introduces the construction techniques and deformation control for the immersed tube steel cage of the Hongkong-Zhuhai-Macao Bridge. [ABSTRACT FROM AUTHOR]