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钢桁腹预应力混凝土组合桥梁是一种新型的组合结构桥梁,具有受力明确、造型美观等特点,同时采用了钢桁腹杆的工厂化制作、体外预应力等技术,实现施工方便、缩短工期等良好的社会和经济效益。介绍了我国首座钢桁腹预应力混凝土组合梁桥——南京绕越公路东北段江山桥的节点试验研究、设计与施工关键技术和工程应用,为同类桥型的建设积累了技术经验,有助于推进我国新型组合结构桥梁的应用和发展。
The steel girder belly prestressed concrete composite bridge is a new type of composite structural bridge with the characteristics of clear stress and beautiful appearance. At the same time, it adopts the factory production of steel girder webs and external prestressing technology to facilitate the construction and shorten the construction period Duration and other good social and economic benefits. This paper introduces the experimental research, design and construction of the key bridge girders and the application of the bridge in the northeast section of Nanjing Yuanying Highway. It has accumulated technical experience for the construction of similar bridge types, To promote the application and development of the new type of composite structure bridge in our country.