内容导读：InterfaceNewsreporter|LiuSunanInterfaceNewsEditor|PengPengOnApril30,2024,attheconstructionsiteofthe...……
Interface News reporter | Liu Sunan
Interface News Editor | Peng Peng
On April 30, 2024, at the construction site of the west extension line of Shanghai Rail Transit Line 17, the last rail welding of the whole line of Gangang Bridge was completed, which marked the realization of a two-way "long rail pass" in the west extension project of Shanghai Rail Transit Line 17.
The west extension project of Shanghai Rail Transit Line 17 is an important project in the Yangtze River Delta demonstration area.RiotgamesblockchainThe rail transit line extends westward from the existing Oriental Green Boat Station to Xicen Station, with a total length of about 6.Riotgamesblockchain.6 km, with a total of one station and one section, the whole line is an elevated line, continuously crossing the G50 highway and the third-level waterway blocking port.
According to the plan, the west extension of Shanghai Rail Transit Line 17 will be opened to traffic by the end of the year. After completion and opening to traffic, it will provide great transportation facilities for Huawei R & D base and Xicenkechuang Center, assist the construction of Hongqiao International Hub, support the development of the new city and the upgrading of the city's internal transportation system, and promote the higher-quality integrated development of the Yangtze River Delta.
The track length of the west extension line of Line 17 is about 13.5 km. The "tire paving machine" is used to lay the track, and through the use of high-precision total station with track inspection trolley, the track is systematically measured, analyzed and adjusted to control the construction accuracy to the millimeter level. to ensure the smooth operation of the train in the later stage and improve the comfort of passengers.
In order to organize track laying construction safely, high quality and high efficiency, Shanghai Metro took the lead in formulating the construction plan and adopted the most advanced "Railway Engineering Line Transportation dispatching system" in China. It has realized the informationization of engineering transportation dispatching, real-time train operation monitoring, standardization of engineering construction operations, automation of statistical analysis, and no dead-corner coverage of safety supervision.
Construction site. Photography: Liu Sunan
In order to improve the construction quality of track engineering, a number of new technologies and technologies have been applied in the track laying construction of the west extension of Line 17. In order to solve a series of problems caused by the stagnant water of the traditional horizontal bed board, it is the first in China to use the road bed board with slope in the straight line section of the line, which greatly improves the durability of the track bed and track; in order to prolong the service life of the rail and improve the smoothness of the train, the high-speed polished high-speed rail track technology is adopted.
Construction site. Photography: Liu Sunan
For rail fasteners, a new anti-corrosion technology has also been applied in this construction. The alloy protective layer formed by thermal diffusion galvanizing anti-corrosion technology has the characteristics of high hardness, strong adhesion and strong corrosion resistance. a stable and self-healing protective layer is formed on the surface of the matrix through patented powder technology, and the salt spray test can reach up to more than 3000 hours to improve the service life of the components.
In addition, the Shanghai Metro has synchronously refined the power transmission plan and transmission process, and has recently realized the success of remote control transmission of the substation, providing power guarantee for subsequent train commissioning and initial operation.