Open Excavation Method for Construction of Olympic Sports Center Station for Zhengzhou Metro
The Olympic Sports Center Station is located at the intersection of Zhanqian Avenue and Wenbo Avenue in Zhengzhou City. It is a T-shaped transfer station for Line 14 and Line 6. The auxiliary structure includes five sets of wind pavilions, six entrances and exits, two transfer halls in the north and south, and one underground parking lot. The total length of the Olympic Sports Center Station Line 14 station is 219.9m, the total width of the standard section outsourcing is 23.3m, and the buried depth of the station is 28.7m. The total length of the station of Line 6 of the Olympic Sports Center Station is 198.2m, the overall width of the standard section outsourcing is 24.1m, the buried depth of the station is 39.3m, and the top plate of the station is covered with the soil of 12m. The station adopts an open excavation method for construction, and the foundation pit retaining structure adopts slope excavation+1m and 1.2m retaining piles.
The length of the right track in the shield section from the Olympic Sports Center Station to Linhu Road Station is 1372.85m, and the length of the left track is 1371.729m (short chain 1.121m). The center distance between the left and right lines of the section is about 13-17.2m. The longitudinal section of the line is a single slope, climbing from the Olympic Sports Center Station to Linhu Station, with a maximum longitudinal slope of 22 ‰. A total of two communication channels are set in the section.
