Steel-Concrete Composite Cable-Stayed Bridge-Main Bridge of the Jiangxinzhou Yangtze River Bridge at Nanjing

Nanjing Jiangxinzhou Yangtze River Bridge is located at Nanjing, People's Republic of China. The main bridge spans Yangtze River in the form of a cable-stayed bridge with three towers and two main spans, with a total length of 1796 m and a main span of 600 m. The towers and main beams of the bridge are all steel-concrete composite structures, which is the first all-steel-concrete composite structure cable-stayed bridge in the world. The bridge innovatively develops a steel shell-concrete composite structure tower, deploys coarse aggregate reactive powder concrete (CA-RPC), and applies it to the main girder of the bridge to form a lightweight and high-performance steel-concrete composite beam. Numerous innovative technologies have been achieved with new materials, new structures, new processes, and many other aspects. The unique structural concept has significantly increased the factory manufacturing speed of bridge components, which not only reduces the work and labour cost at the bridge site above the bearing platform to less than 25% but also effectively reduces the amount and loss of engineering materials during bridge construction, all of which have made outstanding contributions to the development of cable-stayed bridges. At the same time, it has also contributed a bridge of stunning appearance and unique structure to China and world bridge engineering.