Xixi River Bridge

What travelers say:

Miaoling Xiu color karst landform of the bridge is strongly developed and geologically complex, which makes the Xixi River at the junction of Dafang County and Luxi County in Bijie City, Guizhou Province, showing the precipitousness of the scenery, and the geographical characteristics of the northern Yungui Plateau, making the soil and various flowers here "temperament". Show a cold color, so that tourists in the viewing, bring a different new feeling. Today, across the deep 256-meter Xixi River Canyon, the highest junction pier is 59.95 meters, and the Xixi River Bridge, one of the heavy difficulties of the "four bridges and thirteen tunnels" on the whole line of Guizhou Railway, has passed the disaster and struggle of the China Railway Eighteen Group, a full length 493.6 meters. The main bridge adopts 240 meters of steel pipe concrete arch bridge, which makes the sky across the river on both sides of the Straits become an instant arrival, adding a more attractive artificial intelligence scenery to the deep Grand Canyon with unlimited scenery. The main arch ring is constructed horizontally, with two semi-arch rings on both sides of the river valley to build a support group according to the terrain, and the semi-arch ring on the side of Chengdu is turned counterclockwise to 120 degrees, and the Guiyang side is turned clockwise to 133 degrees, until the docking dragon. It has been fixed to become a scenic bridge, and the construction process is also built during the effective construction period, but the entire construction process, affected by the geographical environment and complex project design, does set a huge problem for the whole project. Due to the small terrain on both sides of the Xixi River Canyon, large-scale mechanical and bridge construction, the deployment of manpower corresponding to the huge amount of engineering can not be carried out. When the project is built, well-known domestic bridge experts are invited to investigate and study the construction plan on the spot many times. The solution derived from the crystallization of various bridges was comprehensively reviewed by experts. The project opened the construction scene behind the scenes, the actual construction of the project department more than 300 builders, facing various construction problems to face difficulties, increase the strength of scientific and technological attack, solve the scientific and technological problems that plague the construction, and carry forward the hard work and hard work spirit. Creatively make various construction problems that are difficult to be performed by the site, solve them, and fight day and night for two years, and overcome the problems such as "mounting precision control in millimeter-level rotary ball milling device", and obtain five new practical patents, and publish 5 professional papers. Filling a number of technical gaps, representing the highest level of the construction of today's rotary arch bridge, has created four items of high-speed rail bridge construction in the country: the largest bridge of the same type span in the country The first bridge arch bridge with two-way air rotary bridge The first one adopts full-welded steel pipe arch concrete The first bridge to adopt the "continuous tractor bridge top push" technology bridge its construction will promote the arch bridge turning technology to a new height, this is the largest span of the same type of bridge in China, and in the construction of domestic high-speed rail bridge innovation adopts the "continuous tractor bridge top push" Technology. The Xixi River Bridge with reinforced concrete combined beams has a total length of 482.7 meters and a weight of more than 2,600 tons, equivalent to the weight of 43 cargo train carriages. The relevant construction technicians of the 18th Bureau of China Railway said in the construction of the bridge that such a "big Mac" should be pushed and accurately docked on a canyon more than 260 meters deep. Its technical difficulty and risk are the first time in the history of the construction of the same type of bridge in China's high-speed rail. But they took the responsibility of "nothing difficult in the world, as long as they are willing to climb", and joined forces with the construction, design, scientific research and supervision departments to launch scientific research, break through the restrictions of terrain and environmental space, and successfully avoid the main arch deformation and arch piers that may occur during the top push and slide of giant bridges. Cracking, achieving accurate top push position, for China's special structural bridge research and construction accumulated successful experience. It is no exaggeration to say that Xixi River Bridge's Helong technology represents the latest level of similar bridge construction in China's railways today. Chenggui Railway, which is about632.6 kilometers long, has a design speed of 350 kilometers per hour. Guizhou Province will pass through Bijie City, Dafang County, Luxi County and Guiyang. After the completion of the train, the time from Chengdu to Guiyang by rail will be shortened from the original 14 hours to about 2 hours. This time and space distance is closer, we must remember Xixi River Bridge! It is the bridge over the canyon that makes them have the freedom to change the way of the sky.