On October 23rd, the main arch of Jianhe Xixiu Bridge was successfully closed in Jianhe County, Guizhou Province. This also marked that the overall construction progress of the bridge had been completed by 83.1%, and the construction had entered the final stage.

Construction of Jianhe Xixiu Bridge

Jianhe Xixiu Bridge was constructed by Guizhou Road and Bridge Group and is located in Nanzhai Town, Jianhe County. It is a fast passage for nearly 20000 residents from six nearby villages, including Zhanliu Village, to cross the Sanbanxi Reservoir area of the Qingshui River to Nanzhai Town. The bridge has a total length of 377 meters and a clear span of 288 meters. The main arch ring section is integral, and the construction process of hanging basket cantilever is adopted. It has the largest span of the same type of bridge in the world.

Construction process of hanging basket cantilever in Jianhe Xixiu Bridge project

There are some important reasons for choosing the construction method of 'reinforced concrete box arch bridge'. First is the terrain where the bridge is located is steep, the geology is broken. And the construction site is narrow. And the last is the bridge structure is complex, and the construction technology is very difficult. The 'reinforced concrete box arch bridge' has characteristics such as strong terrain adaptability, low construction cost, and low maintenance cost in the later stage, which is particularly suitable for the local landscape, "said Zhang Jijin, the chief engineer of Jianhe Xixiu Bridge project.

Construction site of the closure section of Jianhe Xixiu Bridge

During the construction process, for the first time, the construction team adopted multiple new technologies and processes such as "arch ring variable solution surface design", "Beidou Tower deviation control technology", and "catwalk long-distance concrete transportation" in the construction of suspended arch bridges. This not only improved construction efficiency, but also reduced the impact on the surrounding environment, achieving green construction and efficiency improvement.

Panorama of Jianhe Xixiu Bridge

The planned construction period of the bridge is 3 years, and it is expected to be fully completed and put into use by the end of September 2024. After the completion of the bridge, the travel time between the two sides will be shortened from 90 minutes to 1 minute. This would not only solve the transportation problems of local and surrounding people for medical and educational purposes, but also form a linkage with the Jianli Expressway completed at the same time, becoming a new link connecting local economic development and bringing new opportunities for the development of the surrounding areas.

The main arch of Jianhe Xixiu Bridge successfully closed