Recently, the first roof slab of Haishang Tianyuan East Station on Shenzhen Metro Line 12 was successfully poured, marking that the main structure construction of the station has entered the fast track and laying a solid foundation for the subsequent lowering of the shield machine.
Shenzhen Metro Line 12 starts from Zuopaotai Station and ends at Haishang Tianyuan East Station; the line is about 40.54 km long in total and is fully underground; it has 33 stations in total, including 18 transfer stations.
Haishang Tianyuan East Station is located on the south side of the intersection of Minzhu Avenue and Fengmin Road, arranged in a north-south direction along the existing Minsan Road. The station is an island-type two-level station with a platform width of 13 m; the first underground level is the concourse level, and the second underground level is the platform level. The total outer length of the station is 523.74 m, the foundation pit width of the standard section is 22.2 m, and the clear height of the outer structure of the standard section is 13.83 m. The main structure of the station is constructed by the open-cut sequential method. In addition, at Xinsha Road, Haishang Tianyuan East Station reserves a "cross-shaped" transfer station with the long-term Line 18.
At present, for the Phase I main structure of Haishang Tianyuan East Station, 10 bottom slabs have been poured, 2 sections of side walls on the third basement level have been poured, 1 middle slab on the second basement level has been poured, 5 sections of side walls on the second basement level have been completed, 3 middle slabs on the first basement level have been poured, 2 sections of side walls on the first basement level have been poured, and 1 roof slab has been poured. Haishang Tianyuan East Station is the first station in the fourth phase of the Shenzhen Metro project to start foundation pit earthwork excavation and the first station on Metro Line 12 to start bottom slab pouring. At present, through reasonable organization and efforts to seize the construction schedule, it is ensuring that the shield machine is lowered and launched as planned.
During the construction process, the civil engineering section 7 project of Metro Line 12 strengthened the implementation of the quality control system, strictly carried out pre-construction preparations in accordance with the condition acceptance process, and strengthened quality control of the main structure's rebar works, formwork works, support frames, concrete, and other aspects. At the same time, through dense concrete vibration and layered continuous pouring, and by observing the formwork, supports, rebar, embedded parts, and reserved openings at any time during concrete pouring, process control was strengthened.