摘要
采用通用有限元ANSYS软件,分析衢江大桥主桥V型刚构组合拱桥的剪力滞效应,计算了控制截面的剪力滞系数,得出剪力滞系数沿桥梁纵向的分布。指出边跨主梁工作应力较大,特别是边跨主梁与V型腿相交处是强度控制截面,而且边跨主梁剪力滞后现象严重,剪力滞系数高达2 0,设计时必须予以特别的注意。本文计算结果可为同类大桥设计提供参考。
The shear lag effect of the main bridge of Qujiang Bridge is analyzed by using finite element software ANSYS.The shear lag coefficients of the main controlling cross sections are computed,and the layout of the shear lag coefficients along the bridge is obtained.It is pointed out that the working stress of the side-span girder is relatively high,especially in the cross section where the side-span girder intersects with the V-type inclined-leg.And the shear lag effect is serious in side-span girder with maximum coefficient of 2.0,attention should be paid to this in design.The results in this paper can provide a reference for the design.
出处
《公路交通科技》
CAS
CSCD
北大核心
2005年第3期70-73,共4页
Journal of Highway and Transportation Research and Development
关键词
V型刚构
组合拱桥
剪力滞
V-rigid frame
Composite arch bridge
Shear lag
