At 10 o'clock on April 25, 2021, the Guangfo-Zhao Expressway Beijiang Bridge constructed by China Railway Bridge Bureau was opened to traffic, which marked the official opening of the entire highway project.

Beijiang Bridge

Beijiang Bridge is a full-line controlled project of Guangzhou-Foshan-Zhaoqing Expressway. It is located at the junction of Sanshui District and Dawang District of Zhaoqing, across the Beijiang River to connect the two places. The main bridge adopts (115+215+115) meters continuous rigid frame, with a main span of 215 meters, 6 lanes in both directions, and a design speed of 100 kilometers per hour.

The geology of the bridge site is extremely complex, the underlying karst cave, and the construction of the 215-meter-long continuous rigid frame is difficult. During the construction process, the builders overcome many difficulties and applied many new technologies and techniques.

In view of the difficulty in controlling the construction quality of the main span of the bridge and the stress characteristics of the main girder, the builders strengthened and optimized the structure. By embedding monitoring elements such as stress and deformation in the main girder, real-time "health checkups" can be achieved during the construction process.

During the continuous rigid frame cantilever construction process, the elevation is monitored and adjusted in real time, and the research and application of the main beam C60 low-shrinkage, low-creep and high-strength concrete is carried out to ensure that the sub-projects of the main bridge are all optimized at one time.

The builders of China Railway Bridge Bureau have always firmly established a life-cycle quality concept. The proportion of first-class piles of the bridge pile foundation, the average pass rate of the reinforced protective layer of each component, exceeded 95%, the pass rate of concrete strength was 100%, and the pass rate of one-time acceptance of sub-projects reached 100%. Whether it is safety, quality, environmental protection or progress, All handed in satisfactory answers.

Guangzhou-Foshan-Zhaoqing Expressway

The Guangzhou-Foshan-Zhaoqing Expressway starts at the starting point of the Phoenix Mountain Tunnel in Guangzhou and passes through Huangpu District, Tianhe District, Baiyun District, Nanhai District, Foshan City, Sanshui District, Dawang New District, Sihui City, Dinghu District, and Duanzhou District of Zhaoqing City. , Gaoyao District, Deqing County, Fengkai County, the terminal extends westward to the Guangxi Wuzhou Ring Expressway and Wuliu Expressway, the route number is Guangdong Expressway S8, the whole line is about 258 kilometers long.

As a fast passage connecting Guangzhou, Foshan and Zhaoqing, the opening of the Guangzhou-Foshan-Zhaoqing Expressway will further ease the congestion status of Shabei on the Guangzhou North Ring Expressway and the traffic pressure on the horizontal main roads of Foshan City. At the same time, it will further strengthen Guangzhou-Foshan. The links between Zhaosan City, the core area of the Pearl River Delta and Southwest my country have accelerated the development and construction of the Guangzhou-Foshan Zhao “one hour” economic circle and the Guangdong-Hong Kong-Macao Greater Bay Area. Editor/He Yuting