箱梁桥计算有效宽度探讨  

Study on Effective Width Calculation of Box Girder Bridge

作　　者：刘文聪 Liu Wencong(China Railway Major Bridge Reconnaissance&Design Institute Co,,Ltd.,Wuhan Hubei 430000,China)

机构地区：[1]中铁大桥勘测设计院集团有限公司,湖北武汉430000

出　　处：《城市建筑》2020年第11期154-156,共3页Urbanism and Architecture

摘　　要：由于"剪力滞效应"的存在,简支箱梁和连续箱梁桥计算中需考虑"有效截面宽度"对计算结果的影响。笔者对"剪力滞效应"的产生机理和影响因素进行了总结和分析,讨论了新旧规范有效截面宽度计算系数的取值,并进行对比分析,总结和对比了国内外规范中箱梁桥翼缘有效宽度的取值方法和差异,并提出建议,可为箱梁桥设计提供参考。Due to the existence of shear lag effect, the effect of effective section width on the calculation results should be taken into account in the calculation of box girder bridges. This paper summarizes and analyzes the mechanism and influencing factors of shear lag effect, discusses and compares the values of effective section widths of the new and old codes, summarizes and compares the methods of effective section width of box girder bridges in domestic and foreign codes, and puts forward some suggestions. This paper can provide a reference for the design of box girder bridge.

关 键 词：箱梁桥 剪力滞效应 翼缘有效宽度 

分 类 号：U445[建筑科学—桥梁与隧道工程]