The Hong Kong-Zhuhai-Macao Bridge Island tunneling immersed tube precast model S1 segment pouring

In February 10th, the Hong Kong-Zhuhai-Macao Bridge Island tunneling immersed tube precast model S1concrete pouring completed successfully.

The sinking pipe prefabricated model is 5.8 meters long,37.95 meters wide,11.4 meters high, floor, roof, side walls are 1.5 meters thick, partition wall0.8 meters thick, concrete pouring volume for the854.5 party. Concrete pouring with conveyer belt and belt conveyor system fabric, in the mixing machine installed at the outlet of buffer tank, a buffer tank top storage cement, below the feeding system to belt feeder. As a result of various embedded parts, dense steel bars concrete vibrating difficulty big, high quality requirements, as well as to prevent the template deformation, lateral mode folding factors such as project department, optimize the whole casting process, shorten the casting time, did a large number of preparatory work, the construction of personnel training, technical details and work arrangements, on duty at the scene logistic support for a thorough deployment, the successful completion of the sinking pipe prefabricated model S1section concrete tasks, for immersed tube precast production and laid a solid foundation.

The Hong Kong-Zhuhai-Macao Bridge Island tunneling immersed tunnel tube section adopts segmental type flexible pipe segment, segment length of 22.5 meters, the 8 pipe sections to form a standard pipe, standard pipe section of concrete is about 27000 cubic meters, weighing 70000 tons, is 180 meters long, a total of33 sections, the total length of 5664 meters, is so far the world's largest offshore island of immersed tube tunnel engineering.