Xingyi Ring Gaofenglin Bridge is located in Xingyi Jushan Sub district Office, across Maling River Valley, adjacent to Xingyi Wanfenglin Scenic Area. It is a controlling project of Xingyi Ring Expressway, with a total length of 1164 meters and a main span of 550 meters. It is the first long-span suspension bridge with steel-concrete composite beams in mountainous areas of China.

Xingyi Ring Gaofenglin Bridge

Fenglin Bridge has a number of technological and construction method innovations. "For the first time in China, zinc aluminum magnesium alloy was used as a new coating anti-corrosion material for the main cable, which improved the quality and life of the bridge. During the construction process, the principle of" minimum damage and maximum recovery "was adhered to. The earth and stone excavated from the pile foundation were collectively transported to the subgrade for filling, and the construction technology of high pile caps was used for the approach bridges on both banks. After the completion of the bridge, the vegetation on both banks basically remained original. In order to implement asynchronous construction of tower and beam, prefabrication lifting technology was adopted for the first time in the world, which greatly shortened the construction period and ensured the safety in the construction process. " Yang Xu, deputy manager of Fenglin Bridge Project, introduced.

  Xingyi Ring Gaofenglin Bridge under construction (data map)

At the beginning of 2020, the bridge construction is in a critical period for the construction of the main cable of the upper structure. The whole construction team is racing against the clock, and even the Spring Festival is on the construction site. "At that time, working at a height of more than 300 meters against the cold wind," Yang Xu remembered the construction process vividly. The main cable of the bridge is erected from the middle of February to the middle of March. Considering the temperature difference between day and night, in order to ensure the main cable line shape, the main cable adjustment must be carried out between 2:00 a.m. and 5:00 a.m.

Brightly lit construction site (data drawing)

The bridge will be closed on September 28, 2020, and will be ready for opening on December 28. Effectively connect the urban area of Xingyi City and Yilong New District, and drive the development of tourism along the Maling River Scenic Area, Wanfeng Forest Scenic Area, etc.

Tianyan News Reporter of Guizhou Daily

Zheng Xing, Deng Bing, Lu Qingjian

Edit Peng Qiyun

Second instance Lu Xiaojuan

Third trial: Jiating Chen Haidong