湖北文理学院学报2024，Vol.45Issue(11)：5-10,6.
分段施工钢箱梁桥最不利荷载效应作用下剪力滞效应分析
Shear Lag Effect under the Most Unfavorable Load Effect for Steel Box Girder Bridge in Segmented Construction
满俭英 1韩少云 2程宸3
作者信息
- 1. 中铁十局集团 青岛工程有限公司,山东 青岛 266011
- 2. 烟台市公路事业发展中心,山东 烟台 264001
- 3. 湖北文理学院 土木工程与建筑学院,湖北 襄阳 441053
- 折叠
摘要
Abstract
Due to the shear lag effect for box girder,the calculated normal stress of the top and bottom plates is not accurate using the elementary beam theory during the construction process.In this paper,based on the beam element model of Midas-Civil,by calculating the longitudinal bending moment envelope diagram of the steel box girder bridge,the section position of the maximum longitudinal maximum positive and negative bending moment were determined,and the bending moment influence lines of the maximum positive and negative bending moment sections were determined.Furthermore,using the shell element model of Abaqus,the most unfavorable lane load and self weight were applied to the maximum positive and negative bending moment sections.Then,considering the lateral eccentricity of the lane load,the shear lag coefficients were obtained.The results show that:(1)For the steel box girder bridge structure,under the condition of lateral eccentricity load arrangement,the shear lag coefficient of the top plate for the maximum longitudinal negative bending moment was the highest,with a maximum value of 1.812.(2)At the position of the maximum longitudinal positive bending moment section and under the condition of lateral eccentric arrangement of lane loads,the shear lag coefficient of the bottom plate for the steel box girder is the highest,with a maximum value of 3.403.关键词
钢箱梁桥/剪力滞/影响线/最不利荷载效应Key words
steel box girder/shear lag/influence line/the most unfavorable load effect分类
交通工程引用本文复制引用
满俭英,韩少云,程宸..分段施工钢箱梁桥最不利荷载效应作用下剪力滞效应分析[J].湖北文理学院学报,2024,45(11):5-10,6.
