不同宽度钢箱梁支座间距对其倾覆性能的影响  

The Influence of Spacing Between Supports of Steel Box Girders with Different Widths on Their Overturning Performance

作　　者：马璐珂 邓乃凡 陈一赫 MA Lu-ke;DENG Nai-fan;CHEN Yi-he(Central&Southem China Municipal Engineering Design and Research Institute Co.Ltd.,Wuhan 430000,China;CITIC General Institute of Architectural Design and Research Co.Ltd.,Wuhan 430000,China)

机构地区：[1]中国市政工程中南设计研究总院有限公司,武汉430000 [2]中信建筑设计研究总院有限公司,武汉430000

出　　处：《工程建设与设计》2025年第3期92-94,共3页Construction & Design for Engineering

摘　　要：以西安体育中心钢箱梁为研究对象,讨论25.5 m宽和8.5 m宽钢箱梁的支反力与支座间距的关系,分析研究支座间距变化对结构倾覆性能的影响,为今后的工程设计提出合理化建议。分析结果表明,桥宽对结构的抗倾覆性能影响有限,当支座间距达到桥宽的1/3以上时,钢结构的特征状态1和特征状态2仅可满足规范最低要求;在条件允许情况下,为了桥梁安全考虑,钢结构桥梁支座间距尽可能达到桥宽1/2为宜。Taking the steel box girder of Xi’an Sports Center as the research object,the relationship between the support reaction force and the support spacing of 25.5 m wide and 8.5 m wide steel box girders,analyzes the impact of changes in support spacing on the structural overturning performance,and proposes reasonable suggestions for future engineering design.The analysis results show that the influence of bridge width on the anti overturning performance of the structure is limited.When the spacing between supports reaches more than 1/3 of the bridge width,the characteristic states 1 and 2 of the steel structure can only meet the minimum requirements of the specifications.If conditions permit,for the sake of bridge safety,it is advisable to achieve a spacing of 1/2 of the bridge width as much as possible between steel structure bridge supports.

关 键 词：钢箱梁 支座间距 倾覆性能 

分 类 号：U441[建筑科学—桥梁与隧道工程]