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该文介绍了崇启大桥(江苏境)引桥的方案比选和设计情况,重点介绍了50m跨径预应力混凝土连续梁的预制节段逐跨拼装结构及钢管桩基础的设计和施工。50m跨径引桥设计采用钢管桩基础方案和预制节段逐跨拼装方案,加快了桥梁建设进度、提高了结构的耐久性,减少了桥梁建设对环境的影响。这种结构形式和施工方法可在类似工程中推广应用。
This paper introduces the scheme comparison and selection of the approach bridge of Chongqin Bridge (Jiangsu Province), and mainly introduces the design and construction of the prefabricated section span assembly structure of 50m span prestressed concrete continuous beam and the foundation of steel pipe pile. The design of 50m cross-span approach bridge adopts the steel pipe pile foundation scheme and the prefabricated segment span assembly scheme, accelerating the progress of bridge construction, improving the durability of the structure and reducing the impact of bridge construction on the environment. This structure and construction methods can be applied in similar projects.