城市立交异形变宽预制节段箱梁设计关键技术研究  

Study on Key Design Technology of Irregular Widened Precast Segmental Box Girder for Urban Interchange

作　　者：李福鼎 LI Fuding

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海市200092

出　　处：《城市道桥与防洪》2024年第5期92-96,M0010,共6页Urban Roads Bridges & Flood Control

摘　　要：结合城市立交常见的变宽形式,对异形变宽预制节段箱梁进行设计构思,提出合理的变宽方案,分析变宽预制节段箱梁的受力性能,并对其关键结构进行优化,以提高变宽预制节段箱梁的标准化程度和拼装效率,拓宽预制节段箱梁在城市立交桥梁中的应用范围,对同类型桥梁的设计工作具有一定的借鉴价值。Combined with the common widening form of urban interchange,the design conception of the irregular widened precast box girder is carried out,and a reasonable widening scheme is proposed.The mechanical performance of widened precast segmental box girders is analyzed,and its key structures are optimized to improve the standardization and assembly efficiency of the widened precast segmental box girder,and to expand the application range of precast segmental box girder in the urban interchanges,which has certain reference value for the design of similar bridges.

关 键 词：城市立交 异形变宽 预制节段箱梁 

分 类 号：U448.21[建筑科学—桥梁与隧道工程]