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High Quality Q345 Weathering Steel Bridge

2019-09-26 16:15:23
Yunbao Yellow River Bridge is a control project from Shanxi Yuncheng to Henan Lingbao Expressway across the Yellow River. It is built by CCCC II, with a total length of 1690 meters and a width of 34 meters. The main bridge is 200 meters long. It is the world's largest span Q345qD weathering steel low-rise tower cable-stayed bridge.
The whole bridge is built on a 6-lane expressway with a design speed of 80 kilometers per hour. The main and auxiliary bridge corrugated steel webs and main bridge steel beams are all bare Q430 weathering steel, which is the first large-scale bare weathering steel for domestic highway bridges; the secondary bridge adopts the “new technology” of “top and bottom plate asynchronous parallel construction”, breaking the routine. It is safe and efficient; the bridge pile foundation is 86 meters deep and is the deepest pile foundation in the middle and upper reaches of the Yellow River; the new combined steel sheet pile cofferdam that can resist the 19-meter water head difference of the bridge realizes the leap of deep water foundation construction application field.
  This weather-resistant steel bridge adds a new road between southwestern Shanxi and northwestern Henan.