双层桁架桥梁在城市立交设计中的应用实践与思考

Application Practice and Considerations of Double-Deck Truss Bridges in Urban Interchange Design

摘要:

随着城市化进程的加快，城市交通需求不断增长，土地资源短缺问题日益凸显。为满足城市交通需求，提高交通效率，双层桁架桥梁作为一种高效的交通组织方案，正被越来越广泛地应用于城市立交设计中。以广州市如意坊放射线系统工程（二期）中的龙溪立交为例，分析了双层钢桁架桥梁在城市快速路主线与辅道过河方案的设计实践，探讨了双层桁架桥梁的技术特点、应用优势以及面临的挑战和未来发展方向，旨在为城市交通建设提供有益的参考和借鉴。

Abstract:

With the acceleration of urbanization, the demand for urban transport is growing, and the shortage of land resources is becoming increasingly prominent. To meet the demands for urban transport and enhance the traffic efficiency, the double-deck truss bridge, as an efficient traffic organization scheme, is being used more and more widely in urban interchange design. Taking Longxi Interchange in the Guangzhou Ruyifang Radial System Project (Phase II) as an example, the design practice of double-deck steel truss bridge in the urban expressway main line and auxiliary road cross-river schemes is analyzed. The technical characteristics, application advantages, challenges faced and future development directions of double-deck truss bridges are further discussed, which aims to provide the useful reference and insights for the construction of urban transport.