纵横梁格构式人行桥结构设计  

Structural Design of Lattice Girder Pedestrian Bridge

作　　者：薛弘毅 XUE Hong-yi(Southeast University Architectural Design&Research Institute Co.,Ltd.,Nanjing 210096,China)

机构地区：[1]东南大学建筑设计研究院有限公司,江苏南京210096

出　　处：《中国市政工程》2025年第2期36-39,142,143,共6页China Municipal Engineering

摘　　要：景观桥作为城市环境中的景观建筑,不仅需要满足城市行人与车辆出行需求,而且要在具体环境中表现美学艺术特征。纵横梁格构式人行桥采用了纵横交叉的梁结构,形成了坚固的框架系统。这种结构简单,能够有效地分散和承载荷载,并提供良好的稳定性和抗震性能。当桥梁跨径单跨小于30 m,单联小于130 m,并且满足温度应力要求时,可采用上下部结构整体刚接设计,减少设置桥梁支座;同时可将纵梁、横梁连接节点,横梁桥墩连接节点分开设置,使桥梁传力路径更简单高效。文章以广东省东莞市卧龙桥为工程实例,此人行桥设计优化后减小了桥梁的结构尺寸,节约材料用量,使其结构更加美观轻巧,对景观桥梁工程的设计优化有一定借鉴意义。As landscape structures in urban environments,pedestrian bridges must not only meet the travel needs of pedestrians and vehicles but also embody aesthetic and artistic characteristics within specific contexts.The longitudinal-lateral beam lattice pedestrian bridge employs a cross-shaped beam structure,forming a robust framework system.This simple design effectively distributes and bears loads while ensuring stability and seismic performance.For bridges with a single span less than 30 m,a single continuous span less than 130 m,and compliance with temperature stress requirements,an integral rigid connection between the superstructure and substructure can be adopted to minimize bridge bearings.Additionally,separating the connections between longitudinal and lateral beams and between crossbeams and piers simplifies load transfer paths,enhancing structural efficiency.This paper uses Wolong Bridge in Dongguan,Guangdong,as a case study.The optimized design of this pedestrian bridge reduces structural dimensions and material usage while achieving a lighter,more visually appealing form,offering practical insights for the design optimization of landscape bridge projects.

关 键 词：景观桥 钢混组合结构 纵横梁格构式 设计优化 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]