On June 17, the Donggang Grand Bridge project on National Highway G228 achieved a key breakthrough in construction, as the first steel-concrete composite segment was successfully hoisted into place, pressing the "accelerator" for the bridge's subsequent construction.

At the site, multiple large pieces of machinery were working in coordination, project management personnel supervised and controlled the entire process, and construction workers carried out each procedure in an orderly manner with a clear division of labor.

It is understood that the steel-concrete composite segment hoisted this time is a core connecting component of the bridge, with a single segment weighing 83.875 tons. This construction procedure has strict precision control standards and a complex on-site working environment. Coupled with the large self-weight of the component and high risks of high-altitude construction, the overall hoisting operation is extremely difficult.

"The component hoisted this time is huge, and high-altitude construction poses many challenges. In response to the complex construction conditions of high-altitude hoisting of large-tonnage components, the project team planned ahead, optimized and improved the special construction plan, implemented safety and technical briefings for all personnel, and comprehensively inspected and maintained construction machinery and equipment, ensuring the smooth completion of this hoisting operation through refined control measures," said Chen Ji, manager of the Engineering Department of Fuqing Communications Investment Group.

The successful hoisting and placement of the first steel-concrete composite segment not only effectively tested the project's construction technical strength and on-site control capabilities, but also laid a solid dual foundation in terms of technology and practical operation for subsequent similar construction tasks such as steel box girder hoisting.

It is reported that the Donggang Grand Bridge starts at Qianhua Village, Jiangjing Town, crosses Donggang, and ends at Putou Village, Jiangyin Town. It is the longest sea-crossing bridge in Fujian Province on National Highway G228. The project route is 4.858 kilometers long, with a subgrade width of 28 meters and an asphalt concrete pavement. It is built to first-class highway standards, with a designed dual-direction six-lane layout and a design speed of 60 kilometers per hour. The main span of the bridge is 260 meters long, and the main piers have a total of 36 pile foundations.

After the project is completed and put into use, it will further open up the regional flow of people and logistics, build a half-hour transportation circle from Fuqing to Binhai New City, Fuzhou urban area, and Pingtan, connect towns and industrial parks along the route, and become a core transportation trunk line running north-south through Fuqing.

"From early planning and preparation to on-site physical construction, the project has strictly adhered to the bottom line of engineering quality and refined full-process construction control," Chen Ji said. Next, the project department will firmly grasp the three core main lines of safety production, engineering quality, and construction progress, steadily advance key node construction such as side-span closure and mid-span steel box girder closure segment hoisting, and strive to achieve the goal of opening the bridge to traffic as soon as possible.

Source: Fuqing Converged Media Center