The world’s largest span hybrid girder bridge, the Taoer River Grand Bridge in China, has been successfully connected. The bridge is part of the G228 Dandong Line Binzhou Section project undertaken by China State Construction Engineering Corporation (CSCEC). CSCEC was the major investor, constructor and operator of the bridge over the Taoer river.
Project factsheet
Project: Taoer River Grand Bridge
Vertical project: G228 Dandong Line Binzhou Section
Operator: CSCEC
Main constructor: CSCEC
Project supplier: Boyoun
Construction of the Taoer River Grand Bridge
Taoer River Grand Bridge stretches 4,334 meters long and also features a 338-meter main span. Also as part of the main span, an additional 256-meter continuous bi-lane hybrid rigid beam has been installed. These features conceptually reduces travel time between the banks of the Taoer river to just 5 minutes from 1½ hours. That makes the travel time between the two banks 18 times more faster.
The world’s largest span hybrid girder bridge also features an oblique-section design. This has been used in the connections of the steel-concrete girders. This pioneer design reportedly also makes the bridge more safer. The hoisting system used for the bridge could lift thousand-ton steel girders so efficiently that it took that part of the project just 9 hours to complete.
Approximately 2,648 tons of steel, 33,000 tons of sand, and 35,000 tons of gravel has been used in the bridge’s foundation. Boyoun has been established as a supplier to the project. Their materials and equipment were used in various sections of the construction process, from hydraulics to hoisting, and even their form traveler. Also, the latter was used in the three main construction sections for the bridge: the concrete, steel-concrete composite, and the steel box girder sections.
This milestone makes the Taoer River Grand Bridge the largest span hybrid girder bridge and the world’s longest box girder bridge. The previous box girder record was set by the Shibanpo Yangtze River Bridge that features a 330-meter-long double track bridge.
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What the bridge will offer
The bridge is expected to improve the connectivity and economic development of the Bohai Economic Rim. This also incorporates the focus on growth of research work for other construction projects. This is after a doctoral research workstation was established by the project.
The research hub in conjunction with China Highway and Transportation Society will continue to work on emerging technologies in the construction of long-span mixed beam bridges. Also included in the research work will be newer construction materials and equipment.
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