The new slow lane of the central gate railway bridge will pass this month

After 15 hours of efforts, on November 27, the jacking of the east half of the central gate railway bridge fast lane box culvert was successfully completed. So far, the workload of the main bridge of the expansion and reconstruction project of the central North Road has exceeded half. As the pouring and jacking of the two hole box culvert with fast and slow speed in the west half of the bridge is about to start, the last slow lane of the old bridge will be closed and demolished in the near future. At that time, the new slow lane on the east side will take the lead in "working". The

central gate railway bridge is located in the north side of the central gate interchange, which is the main access to the north of the city, and also the largest blocking point in the central gate area. The main purpose of culvert expansion and reconstruction is to demolish the old bridge which has been used for decades under the Beijing Shanghai railway in sections, and to form a new bridge by jacking into four holes, two-way and eight lanes. Among them, the outermost box culvert in the East and West is the slow lane, and the middle two holes of the road are the motorway. Due to the construction, only the culvert under the old bridge on the west side is reserved for pedestrians and non motor vehicles to pass through. After the completion of the 7-meter-wide slow lane box culvert in the east half of the "first hole" on September 27, the fast lane box culvert was also jacked in place on November 27. According to

, the express lane box culvert is 24 meters long and 15 meters wide, with a total weight of about 2600 tons. "It took 19 hours for the first underpass box culvert to be jacked in. This time, we repaired the sliding slope under the rail, and the resistance will be much smaller when jacking in." Liu Yang, project director of Nanjing urban construction group construction management group, the construction unit, introduced to the reporter that six hydraulic jacks were installed at the lower end of the box culvert, each bearing pressure of 320t. After jacking, the box culvert covered with lubricant moves forward along the cement slope. Due to the large span of vehicle culvert, the train needs to slow down in advance to ensure safety. The jacking box culvert is a one-way 4-strand South-North lane, with the traffic capacity doubled compared with the past. After the completion of the east half of

, the construction of two hole box culvert in the west half will begin. Reporter sees, already built east side slow lane box culvert bottom, is building pipeline temporary transition trench. According to the construction plan, the jacking of box culvert in the west fast lane will be completed by the end of this year. "It is expected that the West passage will be closed in mid December, leading pedestrians and cyclists to the new box culvert on the east side." The staff of Jiangsu Leiwei company, the construction unit, said that compared with the bumpy and dark traffic environment under the old bridge, the flatness and brightness under the new bridge will bring a new experience to the public. A 6031 a 6031 central gate railway bridge has completed the two hole jacking on the east side, and a new slow traffic channel will be opened soon.