Eight continuous beams of the main project of Yantong railway have been completed and closure is expected to open to traffic by the end of next year

On the morning of October 28, with the smooth closure of the continuous beam across Beiling river of Haian city of Yantong railway of Beijing Engineering Bureau of China Railway, the main project of Haian super large bridge from Yancheng to Nantong railway station has been completed, and the bridge deck construction will be carried out in a large area. According to the person in charge of the project, Yantong railway may be opened to traffic in the whole line by the end of 2020. Pan Hongguang, deputy site manager of No.2 section of Yantong railway of Beijing Engineering Bureau of China Railway

, introduced that the main project of Yantong railway is located in Dongtai City and Hai'an City, Jiangsu Province, with a total length of 26.1km. The main works are Hai'an Super Major Bridge (293 piers (including) to 1097 piers (including)), with a length of 26098.89 m, 782 simply supported box girders and 8 continuous beams. According to the construction organization plan, the total construction period of Yantong railway is 16 months ahead of the original plan, from the original total construction period of 48 months to 32 months, which needs to be completed at the end of next year together with the Shanghai Tong Bridge

"the construction period is shortened by 16 months, but neither the construction scheme nor the quality of the project can be ignored at all," Pan said. "During the peak period of construction, the number of workers nearly doubled. The construction time is short, but the construction difficulty is not reduced at all. The construction of 4-joint (set) continuous beams across Beiling River in two parts is the difficulty and key point of the construction of Yantong railway line. It is also the section with the largest length and difficulty coefficient in the ytzq-4 bid section of Yantong railway station front project, and the continuous beam of the last joint in the bid section. " The continuous beam is 1004 ~ 1007 pier, of which 1005 ~ 1006 pier is used as the main span to cross Beiling River, with a total length of 177.5m and a bridge deck width of 12.6m. The bridge span form is (48 + 80 + 48) m prestressed concrete continuous beam. According to the navigation capacity of the river, passing ships do not need to make height limit warning, so the continuous beam adopts the cantilever casting method of hanging basket According to Zhu Hualong, the head of the Construction Command Office of the

Yantong railway, Haian used to be a regional hub. The new long line from Yancheng to Huai'an was to the north, the Ningqi line was to the west, the Kunming Wuhan Nanjing line was to the north, Nantong was to the south, and it could not be extended to Shanghai. After the road was completed, it was to Shanghai and other cities along the Yangtze River in the south of Jiangsu, with high traffic efficiency. For advance. Yantong railway is an important component of the first vertical coastal railway in the national "eight vertical and eight horizontal" high-speed railway network, and it is also an important traffic vein connecting the two national strategies of "one belt and one road" construction and the development of the Yangtze River economic belt. Accelerating the construction of Yantong Railway will improve the national coastal railway artery, promote the coastal areas of Jiangsu to integrate into the Yangtze River Delta region, promote the revitalization of Northern Jiangsu and win the battle against poverty. It is of great significance. Therefore, according to the instructions of the provincial Party committee and the provincial government, the total construction period of the Yantong railway has been shortened from 48 months to 32 months, and it will be completed simultaneously with the Shanghai Nantong bridge by the end of next year. Speed alone is not enough, and the construction quality of the whole line construction also realizes intelligent control, full line supervision and regular inspection by the construction unit.