Lianzhen railway node project - half of the progress of steel beam erection of Wufengshan Yangtze River Bridge

On November 1, the steel beam of the 20th large section of the middle span of Wufengshan Yangtze River Bridge was successfully erected, which completed the goal of more than half of the erection 30 days ahead of the original construction period, and the construction speed reached a new high

according to the introduction of Mou Xiang, project manager of Lianzhen Railway Project Department of China Railway Bridge Bureau, there are 53 steel truss sections of the whole bridge of Wufengshan Yangtze River Bridge, and the three sections in the middle of the main span are single section steel truss beams, each section weighs about 700 tons, and the single 900 ton cable crane is used to lift the steel beams. The other 34 sections are large section steel truss beams, with the heaviest steel beam section reaching 1432 T, is the heaviest suspension bridge steel truss beam in China at present, using two cable-loaded cranes to lift the whole section

"in order to reduce the occupation time of waterway as much as possible, with the full support and cooperation of Zhenjiang Maritime Safety Bureau, the construction scheme is constantly optimized, and the erection speed is constantly at a new high. Up to now, the fastest time to use is 2 hours and 50 minutes to lift the steel beam to the water surface 50 meters, the channel has reached the full opening conditions, and 6 hours to lift the steel beam to the designated location and connect with the sling to complete ", introduced by Zhang Yaojun, deputy manager and safety director of the project department A 6031 a 6031 is erected at the same time on the north and south banks, i.e. two large sections of beams are erected in one day. This is the first time that the Wufengshan Yangtze River Bridge has erected two large sections of steel beams in one day on the golden waterway of the Yangtze River, which is busy in transportation. This not only improves the construction efficiency, but also reduces the occupation time of the waterway, and wins precious time for the main bridge to connect in advance The

Wufengshan Yangtze River Bridge is the first suspension bridge for both highway and railway in China, and it is also the key node project of Lianzhen railway. The total length of the bridge is 6.409 kilometers, with a main span of 1092 meters. One bridge crosses the river. The lower layer is 4-line high-speed railway (two lines are reserved), with a design speed of 250 kilometers per hour. The upper layer is a two-way 8-lane expressway, with a design speed of 100 kilometers per hour. It is the world's fastest speed and largest operation load dual-purpose suspension bridge

(source: Jiangsu news broadcast / Shi Yi editor / Gao ruotang)