The longest railway box girder in China has been poured successfully and will be formally used on a large scale

Recently, in Changzhou, Jiangsu Province, the first 40 meter long, 1000 ton simply supported box girder has been successfully poured in Wujin beam making plant, the first 40 meter long simply supported box girder poured by CCCC Second Harbor Engineering Bureau South inter city railway station, which is the longest railway box girder in China and the first 40 meter long simply supported box girder poured by CCCC.

South inter city railway along the river runs from Nanjing South to Taicang. The main line is 278.53km long. It adopts the technical standard of double track high-speed railway. The designed driving speed is 350km / h and there are 8 stations in total. Among them, the first five stations contracted by CCCC Second Harbor Engineering Bureau are more than 30 kilometers long. The

project will be the first high-speed railway in China to use 40 meter long simply supported box girder formally and on a large scale, following the trial use of 40 meter long box girder on Zhengzhou Jinan railway and Fuzhou Xiamen railway. The 40m long simply supported box girder poured in

this time has the advantages of saving materials, reducing land occupation, facilitating erection and installation, and improving the span capacity. It can further improve the flexibility and construction efficiency of bridge layout schemes in complex sections such as river crossing and road crossing, and greatly reduce the cost of high-speed railway construction. The production task of 502 40 meter long simply supported box girders of nanyanjiang inter city railway is undertaken by the

Wujin beam making yard, accounting for nearly 60% of the total number of the whole line.

according to the person in charge of the beam yard, the 40m long simply supported box girder will be mass produced in 2020, laying a solid foundation for the overall construction of the project. (Li Ya)