The longest span continuous beam of Zhangji Huaihua railway is 2525 meters long
Huaihua news online on December 7, the main span of the long-span Wushui bridge under the largest continuous beam of Zhangji Huaihua railway was closed smoothly, 55 days ahead of the scheduled time. Xialong Wushui super major bridge is the second continuous beam closure bridge after Yaoli River Super Major Bridge in Huaihua section of Zhangji Huaihua railway project, laying a solid foundation for accelerating the construction of the whole line project. Xialong Wushui grand bridge is located in Hecheng District, Huaihua, and constructed by China Railway Construction Bridge Engineering Bureau Group Co., Ltd. The total length of the bridge is 2525.69m, and the main span of 168m continuous beam is across the Wushui river. There are many types of continuous beams, many spans, high water depth of piers, complex structure and difficult construction.
according to Li Jiahuan, deputy manager of the second division of zhangjihuai railway project, the construction of continuous beam is safe and high quality risk. The overall construction scheme of 168m main span continuous beam adopts the construction method of cofferdam before foundation. The foundation construction mainly consists of two parts, namely "underwater blasting construction" and "double wall steel cofferdam construction". In the construction process of
, advanced tooling technology is adopted to save the construction period and speed up the progress. According to the requirements of Zhangji Huaihua railway construction headquarters, the main span of Xialong Wushui bridge will be closed on January 31, 2020, and the actual completion time is 55 days ahead of the scheduled construction period. The total length of Zhangji Huaihua railway is 246.3km, passing through three cities, prefectures, seven counties and urban areas, with a design speed of 350km / h. It is planned to be completed and opened to traffic in 2021. At that time, the time from Huaihua to Zhangjiajie will be shortened from 3.5H to 1H, which is of great significance for poverty alleviation and national tourism development along the line. (reporter Yang Yujie, correspondent Xiao Peng)