Chuanguan News reporter Wang Meiling
On April 29, news came from Chengdawan High-speed Railway Company that on the same day, the Chengdawan high-speed railway Yingwan section control project and the continuous cast-in-situ beam of the high-speed bridge across the left ditch were completed by China Railway Beijing Engineering Bureau, laying a solid foundation for the follow-up construction of the whole line.
Chengdawan high-speed railway construction site. Courtesy of Chengdawan High-speed Railway Company
Located in Kaijiang County, Dazhou City, with a total length of about 337 meters, the Zuojingou Cross Kailiang High-speed Bridge is a double-track high-speed railway bridge, which crosses the Kailiang Expressway in the form of cast-in-place continuous beams. The construction personnel divided the continuous beam into 14 standard segments for construction, and this time the closure was a mid-span, which was located above the Kailiang Highway.
Chengdawan high-speed railway construction site. Courtesy of Chengdawan High-speed Railway Company
According to Jian Faliang, the person in charge of the 15th standard and second work area of the Chengdawan high-speed railway of China Railway Beijing Engineering Bureau, the Kailiang Expressway is under construction, and the bridge construction should cross the expressway, facing difficult problems such as difficult organization and coordination of cross operations, high environmental protection requirements, complicated construction procedures, and high pier operation risks. During the pouring process of the middle span closure, the builder unloaded the water from 10 counterweight tanks totaling 50 tons on the left and right sides of the closure section, just like by adjusting the "weights" on the "balance" to achieve accurate dynamic balance, and installed video surveillance systems in key construction parts such as tower cranes and hanging baskets to ensure the safety and quality of continuous beam construction.
Chengdawan high-speed railway construction site. Courtesy of Chengdawan High-speed Railway Company
The Chengdu-Dawan high-speed railway is an important part of the mainland's "eight vertical and eight horizontal" high-speed rail network along the river. The line starts from Tianfu Station in Chengdu, Sichuan Province in the west, passes through Ziyang City, Suining City, Nanchong City, Dazhou City in Sichuan Province and Kaizhou District and Wanzhou District of Chongqing City, and connects to the existing Wanzhou North Station of Zhengyu High-speed Railway, with a design speed of 350 kilometers per hour, which will become a major high-speed rail channel out of Sichuan in the east and north directions of Sichuan. At present, the overall progress of the Chengdawan high-speed railway bridge project has reached 46.8%, and the tunnel project has been completed by 37.6%.