my country's first composite rotary bridge, the silver -hundred high -speed tweezers bridge arch bridge arches go smoothly

On August 29th, after 8 days of turntable construction, the Grade Grade Bridge, an important controlling project of the Chongqing City of Yinbai, completed the first domestic single -arch composite rotation. Next, the bridge deck will be carried out.

Yinbai Expressway Chongqing City Kaizi Bridge is located in Xunzi Township, Chengkou County, Daba Mountain. It is a typical bridge of Chongqiu District, Mountain, with a total length of about 330.8 meters. Large span arch bridge of the rotary process. Each single arched rib first goes up to the maximum vertical 70 degrees, then turn to 182 degrees flat, and then go down to a maximum vertical transition of 28 degrees. A turntable unit weighs 4,700 tons. Turning operation sets the record of the largest number of domestic single -bridge rotation operations.

It is worth mentioning that the main structure of the main bridge of the Gazuka Bridge uses the steel -free steel, which is also the first domestic highway -free weather -free steel box arch bridge.

According to the Chongqing Expressway Group, the opening section of the Chongqing City of Yinbai Highway at the end of 2022 will be opened to Chengkou County, which will be completed and opened to traffic in nearly one year in advance compared In 2026, it is expected to add a new direct provincial passage for Chongqing to add to Shaanxi. After the completion of the Chongqing City of Yinbai Expressway, it is of great significance to drive the economic development of the areas along the route, promote the industrial economy upgrade, and help the rural rejuvenation of Qinba Mountain District. At the same time, it can also speed up the development of mineral resources and tourism resources in Qinba Mountain.

Source: CCTV News Client

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