钢箱梁翼缘板剪力滞后效应分析与探讨  

Analysis and Discussion on Shear Lag Effect of Flange Plate of Steel Box Girder

作　　者：张高峰 童景盛 ZHANG Gaofeng;TONG Jingsheng

机构地区：[1]兰州有色冶金设计研究院有限公司,甘肃兰州730030 [2]中国市政工程西北设计研究院有限公司,甘肃兰州730000

出　　处：《城市道桥与防洪》2022年第11期71-73,84,I0009,共5页Urban Roads Bridges & Flood Control

摘　　要：在我国钢桥建设中,钢箱梁是应用最为广泛的一种类型。对于市政钢箱梁,桥面往往较宽,采用单箱单室结构时,腹板间距较大,结构尺寸高而薄,受力复杂,常受到多种力的联合作用,因此确定合理的腹板间距及尺寸以获得良好的结构效应,是设计关注的重点,也是探讨的关键。拟通过计算单箱单室桥梁剪力滞效应,比选不同腹板间距的桥梁剪力滞系数,确定钢箱梁腹板间距的合理尺寸,从而为钢箱梁结构设计提供参考。In the construction of steel bridges in China,the steel box girder is the most widely used type.For the municipal steel box girders,the bridge decks are often wider.When the single-box single-chamber structure is used,the web spacing is bigger,the structure size is high and thin and the stress is complex,which is often acted upon by the combination of forces.Therefore,the determination of the reasonable web spacing and size to obtain the good structure effect is the focus of the design,and is also the key to discussion.By calculating the shear lag effect of the single-box single-chamber bridge,the shear lag coefficients of the bridges with the different web spacing are compared and the reasonable sizes of the web spacing of the steel box girders are determined so as to provide the reference for the structural design of the steel box girders.

关 键 词：钢箱梁 腹板 单箱单室 剪力滞系数 

分 类 号：U443.32[建筑科学—桥梁与隧道工程]