Guangzhou Xinguang Bridge Introduction?

Guangzhou Xinguang Bridge is located on Xinguang expressway in Panyu District, Guangzhou, and spans the main channel of the Pearl River. The main bridge length is 1082 m, the main arch is 428 m, and the arch length on both sides is 177 m, which is a three-span continuous steel arch bridge. The bridge is 37.62 meters wide, with six lanes in both directions and a clear height of 34 meters.

design concept

The bridge type and landscape function of Xinguang Bridge are world-class. It not only has perfect traffic function, but also has high artistic appreciation and aesthetic value. It has its own beautiful structure and beautiful shape, and the bridge type is in harmony with the surrounding environment. The arch curve of the bridge is graceful and gentle, and the beam is straight and rigid, forming a three-span half-through arch bridge in a flying geese. The dynamic trend of bridges endows them with vitality. The whole bridge is like a wild goose rising from the Pearl River, symbolizing the development of Guangzhou.

Mechanical characteristics of bridges

The structural stress system is transformed from simple support to continuous support, which has great innovation and breakthrough in technology; In the construction of Xinguang Bridge, new technologies and new processes such as large-section integral lifting method, Gangkou deep-water cofferdam, steel-concrete composite pile and high-performance concrete were adopted. Among them, the deep-water cofferdam used is the largest one in China at present; The large-segment integral lifting method adopted is the first in China, with the maximum lifting segment exceeding 3,000 tons and the lifting height exceeding 80 meters, creating a precedent for the application of this technology in domestic bridge construction. In addition, Xinguang Bridge also pioneered the construction method of "outside the sidewalk" in Guangzhou, setting the sidewalk outside the steel truss, which is quite distinctive. This is the first three-span half-through arch bridge in China and even in the world, which consists of a steel arch and a V-shaped steel structure. Its beautiful and unique appearance has become one of the symbols of Guangzhou.

Building structure

Xinguang Bridge Project is the first long-span steel truss arch concrete triangular rigid frame new composite bridge in China (177+428+ 177=782m). It realizes the organic combination of different materials such as steel, prestressed concrete and ordinary reinforced concrete with different structural forms such as steel truss arch and triangular rigid frame, and has a unique shape. The large-segment hoisting of arch ribs integrates many advanced technologies of modern bridge construction, which ensures the normal transportation of the main channel of the Pearl River during the construction period. A large number of aerial water operations are converted to ground operations, which shortens the construction period by 6 months, saves investment and construction costs by 5 165438+ ten thousand yuan, and greatly improves the quality of long-span arch bridges, which is of great significance to promoting the progress of the industry.

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