work progress
The project started construction on February 1998, and was completed and put into trial operation on September 19, 2006.
innovation in science and technology
In the process of bridge construction, the builders always put scientific research, scientific and technological innovation and the application of modern scientific and technological achievements throughout the whole process of design, construction and management, demanding quality and efficiency from science and technology, and obtained more than 20 key technical research achievements of super-large suspension bridges, won many awards from the Ministry and the province, and created direct economic benefits of more than 40 million yuan.
For example, the south bank anchorage was excavated to a depth of more than 80 meters, which was then called "the first pit in Central China". According to the original design scheme, it needs to invest more than 20 million yuan for protection and treatment, and technicians and construction workers use scaffolding wall protection method for treatment, saving more than 20 million yuan in investment. By absorbing and adopting foreign advanced technology, the steel box girder of the bridge was changed from rectangular design to fin flat design, saving investment of 26 million yuan.
Special technology
The first application of several special technologies in China reflects the difficulty of bridge construction: for the first time, the optimization design of short ribs on the top plate of steel box girder of suspension bridge can effectively reduce the deformation of bridge deck under load; The external sling anchor box structure is adopted for the first time, which improves the mechanical properties of the structure and improves the construction and maintenance conditions; For the first time, the structural simulation analysis is used to simulate the main structure of suspension bridge, which scientifically verifies the reliability and rationality of structural safety. For the first time, under the harsh climatic conditions of "the regional climate is extremely high at 43.9 degrees Celsius, extremely low at-14.6 degrees Celsius, and the temperature difference reaches nearly 60 degrees Celsius", the double-layer SMA steel deck pavement technology with a thickness of 7 cm was successfully adopted in the steel deck pavement of long-span suspension bridge to prevent the "washboard road" phenomenon caused by poor adhesion between steel plates and asphalt concrete.
bridgework
Yichang Yangtze River Highway Bridge has a total length of1188m, a clear span of 960m, a total width of 30m (including sidewalks), a bridge head connection of about 5km, a designed driving speed of 80km/h, a deck elevation of 83.24m and a maximum navigable water level of 52.18m. The bridge type is a double-tower single-span steel box girder suspension bridge. The whole line is equipped with facilities such as safety, communication, monitoring, power supply and service, and supporting landscape and traffic lighting projects, with a total investment of 895 million yuan.
Important significance
Yichang Yangtze River Highway Bridge is a super-large suspension bridge, which is the backbone of the national expressway network and the trunk line of Shanghai-Chongqing Expressway crosses the Yangtze River in Hubei Province. It is a key transportation project of the Ministry of Communications and Hubei Province in the Ninth Five-Year Plan, and it is also an important passage across the Yangtze River in the main city of Yichang.
The construction of Yichang Yangtze River Highway Bridge is of great significance for speeding up the construction of the trunk line of Shanghai-Chongqing National Highway, improving the bottleneck of the national highway network, serving the Three Gorges Project and promoting the development of the western region.
Engineering honor
On February 3, 2004, 65438+ passed the completion acceptance with an excellent score of 96.46, and won the Zhan Tianyou Civil Engineering Award, the highest award of the Fifth Civil Engineering Society, and the Luban Award, the highest award of the Construction Industry Association.
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