Southern Network News (Reporter Cui Zheng Correspondent He Xuanmei, Feng Haoxuan, Cai Meiqi) On the morning of January 30, the north main tower of the main bridge of the Chaoshan Ring Expressway Jingzao Bridge Project was successfully capped, marking that the main tower of the main bridge has been completed and has fully entered the stage of steel girder cantilever construction.
The Jingzao Bridge project connects the Chaoshan Ring Expressway Chaoshan Liaison Line, crosses the Rongjiang River from south to north, and connects Shantou and Jieyang, with a total length of about 3,110 meters. Among them, the main bridge of Jingzao Bridge is the control project of the whole line of the project, with a total length of about 1,793 meters, and adopts the design of a cable-stayed bridge with a double-tower double-cable surface semi-floating system steel-concrete composite beam. The cross-sectional shape of the tower column is designed as a diamond type, and the city flower of Shantou City, "Golden Phoenix", and the city flower of Jieyang City, "Lotus", are extracted as design elements.
Construction workers are pouring concrete Photo: Fu Meng.
The south main tower located in Shantou City was successfully capped on December 21, 2023, and the north main tower is located in Jieyang City, which is the same height and structure as the south main tower, with a height of about 126 meters, equivalent to a 42-story building, and the entire main tower is composed of six parts: tower base, lower tower column, lower beam, upper tower column, upper beam and tower crown.
The construction of the north main tower of the main bridge of the Jingzao Bridge officially began on January 15, 2023. During the construction process, the problems of small operating space of the trestle platform, deep foundation pit operation, large-volume concrete construction, complex structure of cable-stayed cable anchorage area, variable cross-section of the main tower and synchronous construction of tower girders were successfully overcome.
The project innovatively proposes the "steel anchor beam precise positioning and installation method", through the addition of positioning tooling design and the addition of steel anchor beam transverse limit, the installation of steel anchor beam can be completed quickly and accurately, the installation accuracy and construction efficiency of steel anchor beam can be improved, and the construction progress of construction can be further accelerated.
The construction site of the north main tower of the main bridge of the Chaoshan Ring Expressway Jingzao Bridge Project Photo: Fu Meng.
At present, the construction progress of the whole bridge of Jingzao Bridge has been completed by 75%, and the project has fully entered the stage of construction of the steel girder cantilever frame of the main bridge, and the main bridge is sprinted to ensure that the project is completed and opened to traffic as scheduled.
After the Jingzao Bridge project is completed and opened to traffic, it will effectively solve the traffic needs of hundreds of thousands of people on both sides of the Rongjiang River in Chaoshan area, provide a convenient channel for the transportation of agricultural products in towns and towns along the line, and is of great significance to promote the integrated and coordinated development of the three cities of Shanchaojie and accelerate their integration into the Guangdong-Hong Kong-Macao Greater Bay Area economic circle.