On October 28, the main tower of the Changsha Xiangluzhou Bridge, constructed by CCCC Second Harbor Engineering Co., Ltd., was successfully capped, laying a solid foundation for the full completion of the Xiangluzhou Bridge and its opening to traffic in 2024.

The main line of the Xiangluzhou Bridge is about 3.24 kilometers long, adopting a dual six-lane standard with a design speed of 60 kilometers per hour. As the bridge is located in the lower reaches of the Xiangjiang River, where vessels pass frequently every day, in order to reduce the impact of bridge construction on Xiangjiang shipping, the project adopts a single-tower cable-stayed bridge with a long-span deck to ensure that all types of vessels can pass unimpeded on the Xiangjiang waterway. It is the first bridge on the Xiangjiang River built to Class I waterway standards. The main tower of the bridge is 202 meters high and features a "Diamond of the Xiangjiang River" design, with a main span of 300 meters, making it the single-tower cable-stayed bridge with the largest span and the highest main tower on the Xiangjiang River.

The cable tower of the Xiangluzhou Bridge is designed as a "diamond-shaped" reinforced concrete cable tower, divided into 36 segments. The widest part of the cable tower horizontally reaches 58.8 meters. The tower base is poured in one go using customized formwork, the lower tower column is constructed using the climbing formwork method, the middle and upper tower columns are constructed using digital intelligent hydraulic climbing formwork, and the closure segment is cast-in-place using attached tower brackets.

To ensure the smooth capping of the main tower, the project department innovated processes and construction methods, implemented safety technical measures, optimized resource allocation, and strengthened quality management. In response to the construction characteristics of the main tower, such as large volume, complex structure, high technical content, great construction difficulty, and high safety risks, they actively optimized the construction plan, deepened the application of "four new" technologies, and comprehensively improved project quality and construction progress. "On the basis of key technologies for asymmetric main girder construction and improving the construction methods for key parts of cable-stayed bridges, we focused on research into main tower construction technology and new PK-type steel-concrete composite segment girder construction schemes, summarizing a set of new technologies suitable for the cable-stayed bridge construction of this project, which laid a solid foundation for the smooth capping of the bridge," said Li Xianyang, head of the project department.

The Xiangluzhou Bridge is an important support for the construction of the waterfront new city and the entry into the "three zones and one park" in Wangcheng, Changsha. After the bridge is completed and opened to traffic, it will effectively connect areas such as the High-Speed Rail West City, Wangcheng Economic Development Zone, Yueliang Island, and Dingziwan, forming a major transportation corridor from the main urban area of Xiangjiang New Area to Xiangyin and Ningxiang, accelerating the integration of Wangcheng District into the provincial and municipal development framework, and forming an urban development pattern of two banks of the river advancing together and coordinated linkage between the east and west banks. It is of great significance for Hunan Province to accelerate its integration into the Yangtze River Economic Belt and to help the provincial party committee and provincial government implement the "Strong Provincial Capital" strategy.