The world's widest turnstile across the high-speed rail in Zhengzhou, Henan Province

The world's widest turnround bridge across the high-speed railway successfully crossed the Zhengzhou Wanzhou high-speed railway on the Yingbin Avenue in Zhengzhou City, Henan Province on the 22nd, and successfully turned in the air at 20 meters, marking a breakthrough in the important interconnection project of Zhengzhou Airport - the railway related project of Yingbin Avenue.

is a high-speed railway bridge constructed by China Railway Fourth Survey and Design Institute Group Co., Ltd. (crsiyuan) and China Railway 25th Bureau. It is a key control project of Yingbin Avenue to cross Zhengzhou Wanzhou high-speed railway under construction, inter city railway from airport to Zhengzhou south station and five planned inter city railway. In order to reduce the impact of bridge construction on railway operation, the bridge adopts the method of turning construction, first pouring the beam parallel to the railway side, and then using the hydraulic jack to pull the beam, to realize the turning across the high-speed railway.

according to Zhang Yanjun, chief engineer of the project of No.4 Railway Research Institute, it is the first time in the world that the whole bridge with two-way 8 lanes and 45.83m spans the high-speed railway swivel, and the construction is very difficult. For the first time, the bridge uses the swivel traction four linkage system, and four jacks work simultaneously on a plane to ensure the stability and balance during the swivel. In order to ensure the safety of the turnaround, Zheng Wan railway has given four hours of "skylight period", 800 meters around the turnaround bridge has been fully enclosed, safety officers have been arranged to timely guide the vehicle personnel, and intercom equipment has been equipped to ensure the turnaround construction.

Yingbin Avenue, located on the East-West main axis of the airport experimental area, is one of the "three vertical and four horizontal" systems of the external traffic road network in Zhengzhou airport regional master plan (2018-2035), and the only fast channel from Zhengzhou airport to Zhengzhou south station. The completion of the channel will enhance the carrying capacity of Zhengzhou airport's "air Silk Road". (end)