The world's first four-line high-speed railway rotating steel box truss composite bridge was rotated into place in Anhui

According to news from this site on September 2, the HXZQ-5 standard span Beijing-Shanghai high-speed railway bridge of the Hefei-Xinjiang Railway Project took 56 minutes to rotate 67 degrees clockwise and successfully completed the rotation, opening up the Hefei-Xinjiang Railway. laid a solid foundation.

This site learned that the Beijing-Shanghai high-speed railway bridge is located in Dingyuan County, Chuzhou City, Anhui Province, with a total length of about 4.6 kilometers, and a link (72.2+72.2) between piers 153-155. ) meter steel box truss composite beam spans the Beijing-Shanghai high-speed railway. The steel box truss girder is a triangular truss, 146 meters long and 25.4 meters wide, with a four-line bridge structure. It is the world's first four-line high-speed railway rotating steel box truss combination bridge .

▲ During the bridge rotation process

The steel box truss beams across the Beijing-Shanghai high-speed railway are assembled parallel to the Beijing-Shanghai high-speed railway, and the (nearby) business line construction and high-altitude operations have high safety risks. The fully welded construction technology and rotation process of the steel truss beam are complex, the installation accuracy of the steel truss beam is required to be high, and the welding quality control is strict. It is one of the key and difficult control projects of the Hexin Railway.

The Hefei-Xinjiang High-speed Railway starts from Hefei City, Anhui Province, passes through Dingyuan County, Fengyang County, Mingguang City, Wuhe County, Si County, as well as Sihong County and Suqian City, Jiangsu Province, and ends in Xinjiang Yi City, the total length of the line is about 324 kilometers, with a design speed of 350 kilometers per hour.

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