The Sidu River Bridge is located in Yesanguan Town, Badong County, Enshi Tujia and Miao Autonomous Prefecture, Hubei Province.
The Sidu River Bridge is a high-speed passage connecting Yichang City and Enshi City in Enshi Tujia and Miao Autonomous Prefecture, Hubei Province, China. It is a component of the Shanghai-Chongqing Expressway (National Expressway G50) and is also China's first mountainous area. Suspension bridge.
Located in the lofty mountains of Wuling in western Hubei, spanning high mountains and deep valleys, it is the first extra-large suspension bridge in mountainous areas in China. The total length of the bridge is 1,365 meters, consisting of a 1,105-meter-long bridge and a 228.9-meter-long roadbed.
The main span of the bridge is 900 meters, the height difference from the top of the tower to the bottom of the canyon is 650 meters, and the bridge deck is 560 meters from the bottom of the canyon, which is equivalent to a 200-story building. During construction, rockets were used to launch the pilot cable across the canyon (time 3.60 seconds), creating a world precedent in the history of bridge construction.
The construction of the Sidu River Bridge started on August 20, 2004; the closing project was completed on October 24, 2008, and the bridge was fully connected; it was opened to traffic on November 15, 2009. The Sidu River Bridge starts from the Yesanguan Tunnel in the west, spans the Sidu River Waterway, and ends at the Baziling Tunnel in the east. The bridge deck is a two-way four-lane expressway with a design speed of 80 kilometers per hour.
Scientific and technological innovation and new technology application of Sidu River Bridge
1. Conducted rock mass mechanical performance tests on tunnel anchors, the largest tunnel anchor model pull-out test in China, and rock mass mechanics Systematic scientific research such as parameter and rheological parameter inversion analysis and three-dimensional numerical analysis of tunnel anchor surrounding rocks have innovated tunnel anchor construction technology and improved the technical level of tunnel anchor construction.
2. The innovative solution of "3 tractors + 1 auxiliary push" is adopted for cable saddle transportation, which solves the problem of large-scale transportation on steep slopes and sharp turns in mountainous areas.
3. For the first time, the single replaceable cable construction technology of the anchor prestressed anchoring system was proposed, using spray-coated epoxy steel strand honeycomb tube clusters, and the first domestic 37-hole large-tonnage anchor pad was developed, which was innovative. A set of construction technology for suspension bridge anchorage prestressed anchoring system has been developed, which reduces the amount of concrete, increases the service life of suspension bridge cables, saves bridge maintenance costs during operation, and has significant social and economic benefits.
4. The first "large-span suspension bridge pilot cable rocket throwing technology", the first time rocket technology was introduced into the construction of the pilot cable of a suspension bridge, cleverly combining military technology and bridge construction technology.
The successful research and development of this technology has filled the technical gap in the construction of pilot cables for long-span suspension bridges in mountainous areas with high peaks and deep valleys and complex terrain in China and abroad, and created a new method for the construction of pilot cables for the main cables of suspension bridges, which is technically safe. , economical and reliable.
Reference for the above content: Baidu Encyclopedia-Sidu River Bridge