摘要
由于薄壁钢箱梁抗弯刚度和抗扭刚度大、安装养护方便、轻巧美观等优点,在公路交通中使用得越来越多。而钢箱梁壁厚较薄,在轴向力作用下容易出现屈曲失稳,如斜拉桥中采用的钢箱梁。同时薄壁钢箱的畸变效应也很时显,因此畸变效应下钢箱梁屈曲失稳临界荷载的研究变得比较重要。因此,本文通过有限元软件就简支钢箱梁采用壳单元分析其畸变效应下钢箱梁的屈曲失稳临界荷载,发现畸变效应对箱梁屈曲失稳临界荷载影响很大,且增设跨中横隔板对钢箱梁的屈曲失稳临界荷载影响不十分显著。
As the thin-walled steel box girder having lots of merit such as largest bending stiffeasy to install, lightweight, etc. ,in the use of road traffic was increasing. The wall thickness of steel box girder is thinner, so the dis-tort effect of steel box girder becomes more important. In recent,the distort effects of diaphragm on stmajority of literature,while the distort effect of the other geometric characteristic parameters at steel bothis article has been stiudied the distort effect by analyzing the finite element model witli a series of geit was shown that the distort effects of steel box girder was obvious afected by depth-width ratio and the angle between the roofand web.
出处
《南阳理工学院学报》
2017年第6期99-101,109,共4页
Journal of Nanyang Institute of Technology
关键词
!薄壁钢箱梁
畸变荷载
屈曲分析
几何特征参数
荷载分解
thin-wall steel box girder
lateral distort displacement
geometric characteristic parameter
