The east side of Shenzhen-Zhongshan Bridge Project of Guangdong-Hong Kong-Macao Greater Bay Area（The S08 contract of Shenzhen-Zhongshan Bridge Project）E-24 pipe has completed docking on July 22nd, which symbols that just in 11months, Guangzhou Salvage Bureau has completed all 9 pipes sections floating installation tasks. The high accuracy of this docking is up to millimeter, the horizontal deviation of the plane axis is 0 mm, and the absolute and related deviation of the installation fully meet the requirements of the design and evaluation standards.
The contract involves all the non-standardized piping compound in this projects, with the world-class technical difficulties such as ultrawidth, variable-pitch, deep-bury, large intensity of back silting and unsteadiness of operational areas. The bureau work together with other institutes through independent innovation has discovered the first autonomous underwater 3D printer which has discrete shipway in the world ——The high-accuracy knife holder Dredger “Zhong Ren 801”， which can create plat bottom for pipes’ subside.
Besides, there are also two station towers and two new winch pontoons domestically built by the bureau, such auxiliary equipment will precisely control the longitudinal and lateral movement position by using cable. Coordinated with Tianjin Research Institute for Water Transport Engineering Ministry Of Transport to build an auxiliary decision-making system for immersed tube tunnel construction, the situation of immersed tube is able to give real-time visualization in two and three dimensions to successfully overcome the difficulties caused by the center asymmetry of ultrawidth and variable-pitch pipes and overlong and overweight standard pipe sections.
Translated from: Traffic News in China