by Hot information Shenzhen metro line 14 is the first subway express line in Eastern Shenzhen.
It is also a fully automatic driverless line with the longest rail transit line under construction, the largest span, the most transfers and the widest coverage area in Shenzhen.
It covers the north-south traffic demand corridor in Eastern Shenzhen at a speed of 120 kilometers per hour.
On December 2, the Shenzhen evening reporter learned from Shenzhen Metro group that the precast slab track bed of the whole line of metro line 14 is manufactured in factory and constructed on site mechanically.
This is not only the first time that this technology is adopted in Shenzhen, but also the longest line of precast slab track bed of urban rail transit in China.
Metro line 14 starts from Gangxia North Station in Futian District and ends at Shatian station in Pingshan district.
The whole line is 50.34 km, with 18 stations, 1 depot and 1 parking lot.
It is a popular project of great concern to the people in the east of Shenzhen.
▲ circuit diagram of line 14.
According to the relevant person in charge of Shenzhen Metro Construction Group: “In combination with the environment and line conditions of Shenzhen Urban Rail Transit and the experience of precast slab application in phase III project, Shenzhen Metro Group actively explores the standards and Application Research of slab ballastless track, unifies the structure, type and size of precast track slab track bed, reduces the track slab type, standardizes the manufacturing process, formulates a unified standard suitable for Shenzhen urban rail transit, and implements it in phase IV of Shenzhen rail transit The branch line of line 6 and lines 12, 13, 14 and 16 of the project are all applied to improve the universality and adaptability of precast slabs, practice the concept of industrial industrialization, informatization and green assembly development, and promote the high-quality and sustainable development of precast track in the field of urban rail transit from the source, which is in line with the national development direction of prefabrication and assembly.
“The track slab factory of line 14 undertakes the tasks of prefabrication, maintenance and distribution of about 23000 track slabs of line 14.
It controls the intelligent production line of flow unit composed of more than 10 subsystems through the digital management center, monitors the operation parameters and production status of key production stations in real time, such as tension data, maintenance data, track slab detection data, etc., and provides information on production, test and inspection records Personnel management, material management, template management and finished product management are processed, stored and uploaded to realize the information management of the whole life cycle of precast slab.
Compared with the traditional “pedestal method”, the production efficiency of the track plate factory is improved by 20%, and the mechanized automatic operation can save about 50% labor.
In addition, compared with the cast-in-situ track bed, the cast precast slab track bed has the advantages of strong integrity, easy guarantee of quality and accuracy, less maintenance, good maintainability, clean and beautiful site, rapid upgrading and reconstruction of vibration damping track bed in the later stage, etc; The improvement of the overall quality of the track project provides basic conditions for the safe and stable operation of the train, improves the comfort of passengers and the satisfaction of residents along the line, reduces the maintenance workload and reduces the operation and maintenance cost.
The application of new track laying tooling equipment and the industrialized production of precast track precast slab greatly reduce the labor intensity of track construction workers and improve the construction efficiency.
Compared with the traditional cast-in-situ track bed, it reduces the labor force by about 30% and improves the construction efficiency by about 10% – 20%.
Up to now, the laying of track slab of metro line 14 has been completed 100%, the laying of track has been completed 98%, the single track has been realized, and the welding of long track has been completed 95%; All personnel of the project department are making full efforts to sprint for the long rail transit nodes of the whole line, so as to lay a solid foundation for the “hot sliding” of the first commissioning section before the festival.
The article originates from “China concrete and cement products association”.
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