Nanmen station of Xicheng line S1 won the “precast building demonstration project”
On December 30, 2021, Nanmen station of Xicheng line S1 successfully passed the acceptance of 2021 construction industry modernization demonstration project by Jiangsu Provincial Department of housing and urban rural development, and was awarded the honorary title of “precast building demonstration project”, becoming the first subway project in Jiangsu Province to win this honor.
The technology of assembled and superimposed integrated underground station in Nanmen station conforms to the development concept of green intelligent construction.
Precast components can realize factory standardized and industrialized production, ensure quality control, green, energy-saving, low-carbon, environmental protection, high efficiency and intelligence, which is conducive to saving resources and energy, improving labor production efficiency and promoting the deep integration of construction industry and information industry, Promote the transformation and upgrading of the construction industry, with remarkable social benefits.
Nanmen station is the first assembled and laminated integrated station in China.
The design and construction scheme of the station can be popularized in water rich areas and conventional foundation pit with support, and has a wide range of application.
Photo / text: Gao Yue, Xu Lin, Fu Zhongxiang reviewed by: Liu Meng, Liang Ruilong released by: Sheng Mengting.
The use of the assembly and superposition integral underground station technology greatly reduces the on-site formwork erection and reinforcement binding process, greatly reduces the on-site construction workload compared with the cast-in-situ station, greatly reduces the construction waste and dust, has a high degree of mechanized operation and small on-site labor demand, reduces the labor cost and safety production risk, effectively reduces the adverse impact of construction on the urban environment and shortens the construction period, Reduce the impact of subway construction on urban traffic.
The bottom plate of the project is cast-in-situ concrete, the middle column is concrete-filled steel tubular column, and the outer wall, top plate, middle plate and longitudinal beam are precast composite components.
The bottom plate and side wall, middle plate and side wall, side wall and side wall of the station are connected by new ring buckle connection joints, the plate is pretensioned prestressed members, and the beam is of section steel composite structure, Through the prestress and section steel to resist the construction load, the concrete is finally poured to form an integral frame structure, which effectively ensures the structural stress and waterproof of the station.
The units participating in the construction of Xicheng line will continue to adhere to the original intention of “quality first”, constantly polish and Study on the road of building high-quality demonstration projects, solidly do a good job in the construction site management, constantly explore and summarize the advanced practices and excellent experience in the construction of assembly and superposition integrated station project, so as to “add bricks and tiles” for the smooth capping and excellence creation of subsequent stations.
