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脊骨梁是由单脊梁带大挑臂板的上部结构,外形简洁美观,属于纵横双向预应力连续梁桥,桥面连续性好,行车舒适,桥面宽阔,桥下净空大,其结构形式特别适用于城市立交、跨线桥和城市改造的架空路建设。目前中国国内已经建成的脊骨梁桥多为装配式,该文以G307黄骅绕城工程G205跨线桥为背景,对现浇脊骨梁的设计和应用前景进行了探讨。
Spine beam is composed of a single spine with a big arm plate upper structure, simple and beautiful appearance, is a vertical and horizontal bidirectional prestressed continuous beam bridge, deck continuity, driving comfort, deck wide, large clearance under the bridge, the structure of the form Especially suitable for urban overpass, overpass and urban reconstruction of the overhead road construction. At present, most of the spine bridges in China are built-in structures. Based on the G205 overpass at G307 Huanghua Ring City, the design and application prospect of the spine girders are discussed.