The world's widest turning bridge across the high-speed railway has successfully turned in Zhengzhou Airport

At 15:58 yesterday, the "t" shaped beam with a total length of 99.5 meters, a width of 45.83 meters and a weight of 20000 tons began to cross Zhengzhou Wanzhou high speed rail transit Interchange Project on Yingbin Avenue, which lasted for 1:59, and successfully crossed Zhengzhou Wanzhou high speed rail at 17:57. It is understood that the two-way 8-lane 45.83m wide bridge spans the high-speed rail swivel for the first time in the world.

the world's widest turnstile across the high-speed railway has been successfully turned in Zhengzhou airport. The reporter learned from the scene that the turnstile project across Zhengzhou Wanzhou high-speed railway on Yingbin Avenue is located near the airport core area of the airport. According to the plan, Yingbin Avenue is the fast connecting channel from east to west of Zhengzhou airport, and the only fast road from Zhengzhou airport to Zhengzhou south station.

according to the introduction, four hydraulic jacks are used to pull and rotate the swivel. It is equivalent to a turntable. The upper turntable carries the rotating pier body and beam body, while the lower turntable is connected with the bridge foundation. According to

, the difficulty in the implementation of the swivel bridge project lies in the need to cross the zhengwan railway under construction. The bridge structure is complex, with a single swivel weight of 20000 tons. The beam body of the swivel section is asymmetric swivel with unequal width and span, and the weight difference between the two ends of the swivel bridge supported by the piers is 220 tons. The swivel bridge adopts the most advanced spherical hinge with a diameter of 5m and high precision in China. For the first time, four traction linkage systems are used in the swivel, and four jacks work simultaneously on a plane to ensure the stability and balance during the swivel.

in order to ensure the safety of turning, Zhengzhou Wanzhou railway has given 4 hours of "skylight period", and 800 meters around the turning bridge has been completely enclosed. The completion of

Yingbin Avenue not only greatly improves the traffic efficiency from Zhengzhou airport to Zhengzhou high speed railway south station, but also greatly reduces the time from Zhongmou, Xinzheng, Weishi and other places to Zhengzhou airport and Zhengzhou main urban area. (Zheng Bao, all media reporter, Zhang Qianwang, military aviation airport times, Zeng bijuan, correspondent, Yang Yu, Wang yunhaiwen / photo)