中心城区新建高架桥上部结构选型研究

随着城市的快速发展,建设完善的快速交通系统是城市功能发挥最为重要的保障。然而,在中心城区建设高架快速路面临的限制条件更加复杂。结合南昌市洪都大道快速路改造工程,对常见高架上部结构形式进行受力性能、施工工艺及景观效果等方面的对比,最终选取了节段预制拼装箱梁方案,同时对节段拼装施工过程进行详细介绍。在洪都大道采用节段预制拼装箱梁效果较好,可为其他中心城区的结构选型提供参考。

Study on Superstructure Selection of Elevated Bridge Newly Built in Central Urban Area

With the rapid development of a city,the construction of perfect rapid transportation system is the most important guarantee for the urban function.However,the restrictions on the construction of elevation expressway in central urban area are more complex.Combined with Nanchang City Hongdu Avenue Expressway Reconstruction Project,the mechanical properties,construction technologies and landscape effects commonly for the elevated superstructure forms are compared.Finally,the segmental prefabricated assembled box girder scheme is selected.At the same time,the construction process of segment assembly is introduced in detail.The effect of using the segmental prefabricated box girders in Hongdu Avenue is better,which can provide reference for structure selection in the other central urban areas.