The west main tower of Zhongshan Bridge, the core project of the Greater Bay Area, is topped off for the deep and medium channel Zhongshan Bridge-Chinanews.com

　　On August 9th, the Guangdong Provincial Transportation Group announced that the core project of the Guangdong-Hong Kong-Macao Greater Bay Area-the Shenzhong Passage Zhongshan Bridge west main tower has been topped off, marking the bridge's turn into the express lane for superstructure construction.

　　The deep-medium channel is a cross-sea cluster project integrating "bridges, islands, tunnels, and underwater intercommunication", with a total length of 24 kilometers and a bridge project of about 17.2 kilometers.

Among them, the Zhongshan Bridge is a double-tower cable-stayed bridge with a total length of 1,170 meters and a main span of 580 meters. After completion, the main tower will be 213.5 meters high, which is equivalent to a 70-story building.

　　The construction of the main tower of Zhongshan Bridge in the deep and medium channel requires a total of 34 tower columns. The size of the tower columns gradually narrows as the height of the tower increases. The upper part is thinner and the lower part is thicker. Not the same.

　　It is understood that the main tower of Zhongshan Bridge is constructed with a hydraulic climbing formwork system. In order to adapt to the curve design of the tower body, the size of the formwork needs to be adjusted for each climbing section.

　　The construction site of the Zhongshan Bridge of the Deep and Medium Passage is located in the Lingdingyang sea area, facing the characteristics of the ocean's high salt and high humidity environment. The project uses corrosion-resistant high-performance materials to coat all the steel components, and realizes the protection by the formation of oxide rust layer on the surface Long-term anti-corrosion, through measures such as covering the top surface with water and applying curing agents to ensure that the quality of the concrete meets the requirements.

　　At present, the west main tower of Zhongshan Bridge has been capped, and the east main tower has been constructed to 192 meters. It is planned to be capped in September this year. The subsequent Zhongshan Bridge will be transferred to the construction phase of steel box girder lifting and superstructure, laying the foundation for the closure of next year.

(Cai Minjie Yue Road Construction Produced Li Jiali Video Source Guangdong Provincial Transportation Group)

Editor in charge: [Wang Kai]