Shangqiu-Hefei-Hangzhou High-speed Railway

Background

The Shangqiu-Hefei-Hangzhou High-Speed Railway, also known as the "Second East China Corridor," is a high-speed rail line connecting Shangqiu in Henan Province, Hefei in Anhui Province, and Hangzhou in Zhejiang Province. The Huai River Grand Bridge on the Shangqiu-Hefei-Hangzhou High-Speed Railway is approximately 17 kilometers long, with a main span of 228 meters, and at the time of construction, it held the world record for the largest span of a high-speed railway bridge with ballastless track. After the completion of the Huai River Grand Bridge, trains will pass over the Huai River at a speed of 350 kilometers per hour, taking only a few seconds, which means the bridge will bear a huge impact force. This poses extremely high requirements for the construction quality of the project. 

Project challenge

The on-site construction used the Type III slab track technology without ballast, which requires concrete with a low slump of 80mm to 140mm and a slump loss of no more than 20mm within 2 hours.