Shenzhen Metro construction and promotion of prefabricated station technology

September 2022 marks the 45th National Quality Month. The reporter learned from Shenzhen Railway Group that in recent years, in order to reduce the impact of subway construction on ground traffic and the environment, and to create high-quality and high-standard subway construction quality, Shenzhen Railway Group has focused on green, energy-saving and environmentally friendly assembly technology research. It took the lead in carrying out pilot construction at 7 stations in the fourth phase of the adjustment line, and is committed to implementing high-quality development and achieving results.

The reporter learned that "prefabricated technology" is the full name of prefabricated assembly construction technology, which refers to the production of components or components in the factory, transporting the prefabricated components to the project site, and then performing "building blocks" assembly on the site. After the introduction of prefabricated technology into subway construction, the process of industrialization, intelligence, green and low-carbon development of subway construction has been accelerated with one click.

It is reported that on August 15 this year, the Shapu Station of the second phase of Metro Line 12 was capped, realizing the first successful application of the prefabricated subway station technology in Shenzhen. On September 23, the fourth phase of Pingxi Station of Metro Line 3 was fully assembled, and its fully assembled assembly process of "internal support system + dry rigid connection" is of great significance to the subsequent construction of the prefabricated station.

The person in charge of Shenzhen Railway Group explained that the promotion and application of prefabricated technology in subway construction has many advantages: One is to improve efficiency. For a standard open-cut station, the use of prefabricated construction technology can save 1/4 to 1/3 of the construction period, while shortening the road occupation time of the project and reducing the impact on the surrounding environment. The second is to improve the quality. The components are standardized and mechanized in the factory, and the quality is not affected by factors such as time, space, environment, and personnel quality, and the later operation and maintenance costs are also greatly reduced. The third is to reduce manpower input and ensure safety. Traditional cast-in-place construction requires 180-200 people to concentrate on construction, and the use of prefabricated construction site requires only 20-30 people to assist in the operation, which reduces the labor input by about 85%, and the labor intensity is also greatly reduced. Due to the elimination of a large number of risky operations, the accident rate is also greatly reduced. Fourth, environmental protection and carbon reduction, the prefabricated construction greatly reduces material waste, energy consumption and environmental pollution, and has less vibration and noise pollution along the line.

The application of Shenzhen Railway Group's prefabricated subway stations can not only effectively achieve green environmental protection, reduce costs and increase efficiency, but also help optimize and upgrade urban industries while improving project quality and construction efficiency. In the future, Shenzhen Railway Group will continue to focus on quality improvement, promote and apply prefabricated construction technology in more stations, and create a Shenzhen Railway brand of prefabricated stations with ingenious products.