摘要
该文介绍了曲线梁与直线桥区别和剪力滞效应,运用有限元软件对弯曲宽箱梁受力性能进行了分析,得出了其在自重作用下应力状态和支座处剪力滞效应规律。通过计算得出,在一定曲率半径范围内,弯曲宽箱梁在自重及偏心车道荷载作用下顺桥正剪力滞系数有较好的规律分布,最大值一般在4左右,以及外侧支座处剪力滞系数大于内侧。
Differences between curved beam and straight bridge and the shear lag effect are introduced. The finite element software is adopted to analyze the mechanical behavior of curved wide box girder,and the stress distribution and the shear lag effect rules under self-weight are obtained. Through cal-culation,in a certain curvature radius,the shear lag effect of curved wide box girder under self weight and eccentric lane load is regularly distributed,its maximal value is generally 4,and the shear lag coefficient at outer support is larger than that at inner support.
出处
《重庆建筑》
2013年第9期41-44,共4页
Chongqing Architecture
关键词
弯曲宽箱梁
受力性能
剪力滞效应
应力分布
曲线梁桥
直线桥
弯扭耦合
curved wide box girder
mechanical behavior
shear lag effect
stress distribution
curved beam bridge
straight bridge
bending-torsional coupling
