Beipanjiang Bridge is a section of Hangrui Expressway, which spans the Juni Grand Canyon, starts from Duge Town, Shuicheng County, Liupanshui City, Guizhou Province in the north and ends at Puli Township, Xuanwei City, Qujing City, Yunnan Province in the south, ending the history that there is no expressway connecting Guizhou Water City and Xuanwei City, Yunnan Province, and greatly promoting the economic development of the two places.
Beipanjiang Bridge started on 20 13 and was completed on 20 16 12.9. It took three years to build, which is another miracle in the history of bridges in the world. Over the past three years, the engineering team has overcome many difficulties and overcome all difficulties, and finally built the world's first Gao Qiao. During this period, it has applied for 13 patents and won the "Nobel Prize"-gustavus Gold Award at the 35th International Bridge Congress.
Overcome technical problems
The first bridge of Beipanjiang Bridge is located in the deep mountain area at the border of the plateau, crossing the U-shaped Grand Canyon of Beipanjiang River, with a valley depth of 600 meters. The terrain is very steep and the geological conditions are very complicated. The frequent occurrence of local geological disasters and the harsh natural climatic environment such as strong wind, fog, rainstorm and freezing have brought severe tests to the structural safety and operation of large bridges under wind and freezing rain conditions.
In the construction process, the construction unit adheres to the development concept of "colorful and most beautiful expressway in Guizhou", and the bridge always adheres to the minimum damage and maximum protection from the whole process of design, construction and operation, achieving the construction goal of low cost, low pollution and low energy consumption.
Through the centralized drainage of the bridge, the jacking construction of the side span of the main bridge and the application of 500 MPa high-strength steel bars, the influence of bridge deck sewage on the water and soil system is minimized, and the occupation of land resources is greatly reduced. At the same time, it simplifies the on-site binding of steel bars, facilitates the construction, and achieves the purposes of energy saving, emission reduction and sustainable development.