Project Name: Dongying Dongjin Yellow River Bridge Project
Project Location: Lijin County, Dongying City
Project Content: The main bridge of the Dongjin Yellow River Bridge is a double-tower steel-concrete composite girder cable-stayed bridge with a span arrangement of (50 + 180 + 420 + 180 + 50) m, and a total bridge length of 880 m. It adopts a semi-floating system. The bridge towers are A-shaped towers without lower crossbeams, with separated foundations. Ground beams are set between the foundations to form a closed frame with the tower columns. The auxiliary piers and transition piers are all rectangular solid piers, and the foundations are all bored cast-in-place pile foundations. The total steel usage is over 12,000 tons.
The Dongjin Yellow River Bridge project features numerous significant technical characteristics and innovations. In terms of structural design, the main bridge adopts a double-tower steel-concrete composite girder cable-stayed bridge form, ingeniously combining the high strength of steel and the durability of concrete, fully leveraging the advantages of both materials. The unique span arrangement of (50 + 180 + 420 + 180 + 50) meters not only meets the complex hydrological and geological conditions of the Yellow River but also achieves a perfect unity of mechanical performance and aesthetic design for the bridge.
The bridge tower adopts an A-shaped bridge tower without a lower crossbeam, which has a simple and smooth shape. It not only reduces the self-weight of the structure but also lessens the impact of wind loads on the bridge tower, enhancing its stability. The separated pile caps, in combination with the ground beams and the tower columns, form a closed frame, further strengthening the bearing capacity and integrity of the bridge tower foundation, providing a solid guarantee for the safe operation of the bridge.
The auxiliary piers and transition piers adopt rectangular solid piers, which have a simple structure and clear force transmission. Their foundations are all bored cast-in-place pile foundations. This type of foundation has strong adaptability and can effectively cope with the complex geological conditions along the Yellow River, ensuring the stability of the bridge during long-term use.
The construction of the Dongjin Yellow River Bridge project holds significant strategic importance and economic value. From the perspective of transportation, after the completion of the bridge, the transportation network of Dongying City and Lijin County will be further improved, the connection between the two banks of the Yellow River will be strengthened, and economic exchanges and personnel exchanges between regions will be promoted. It will play a positive role in alleviating the existing traffic pressure and improving the efficiency of transportation.
From the perspective of economic development, the construction of the bridge will drive the industrial development of the surrounding areas, attract more investment and enterprises to settle in, and promote the prosperity of the regional economy. At the same time, it will also create favorable conditions for the development of the local tourism industry, attract more tourists to visit and tour, and promote the upgrading of the tourism industry.
Looking ahead, the Dongjin Yellow River Bridge will become a bright calling card of Dongying City, showcasing the city's modern image and development potential. With the completion and opening to traffic of the bridge, it will inject new vitality into the economic and social development of Dongying City and promote the process of regional integration to a new height. The project team will continue to uphold a rigorous working attitude and a strong sense of responsibility to ensure the safe, stable and efficient operation of the bridge in the subsequent construction and operation process, and contribute to the development of Dongying City.
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