New progress! Double track bridge of Daning River in Wushan of Zhengzhou Wanzhou high speed railway will realize the closure of steel tube arch rib

Today (8), the upstream news Chongqing Morning Post reporter learned from the second division of Chongqing section of Zhengzhou Wanzhou high speed railway that the double track bridge of Wushan Daning River of Zhengzhou Wanzhou high speed railway will realize the closure of steel tube arch rib on 21 this month, which also provides a solid foundation for the opening of the whole line of Zhengzhou Wanzhou high speed railway. The

zhengwan high speed railway Wushan Daning River double track bridge is located in the small Three Gorges scenic area of Wushan County, which is one of the key and difficult control projects of the project. At the same time, the bridge is also the first railway through steel tube arch outsourcing concrete arch bridge in China. The structure is complex and the safety risk management and control is very difficult, especially the whole bridge hoisting operation. Wushan Daning River double track bridge has a total length of 372 meters. The whole bridge is composed of 30 steel pipe arch ribs. The length of a single section is 25 meters, the width is 3.7 meters, the height is 7.7 meters, and the weight is 74 tons. It is very difficult to accurately position the hoisting and installation. Zhao Jianfeng, a hoisting technician at the site of

Daning River double track bridge in Wushan, said that the precise alignment of steel tube arch rib is comparable to "pinlead". Through the application of BIM construction management platform, the whole process of simulated operation and maintenance is carried out to ensure the accurate alignment of each steel tube arch rib. At present, the hoisting work of the double track bridge of Daning River in Wushan is carried out orderly. Its construction will provide a new construction method for the concrete arch bridge with steel tube arch outside. At the same time, it will also provide a solid foundation for the opening of Zhengzhou Wanzhou high speed railway. "At present, 16 steel pipe arch ribs have been hoisted and installed. According to the current progress, the remaining 14 steel pipe arch ribs will be hoisted and installed on the 21st of this month." Cai Yong, site manager of the Daning River double track bridge in Wushan, said. The Chongqing section of the

Zhengzhou Wanzhou high speed railway is about 184km long, and there are four stations along the line: Wanzhou north station, Wushan station, Fengjie station and Yunyang station. Wanzhou north station and Wushan station are equipped with departure stations. At present, the construction of Chongqing section of Zhengzhou Wanzhou high speed railway is progressing smoothly and has made major breakthroughs, which is expected to be completed and opened to traffic in advance. At that time, the driving time from Chongqing to Zhengzhou and Beijing will be shortened to 4 hours and 6 hours respectively.