铁道标准设计Issue(12)：67-70,71,5.DOI:10.13238/j.issn.1004-2954.2014.12.017
横梁腹板切口形状对正交异性钢桥面板疲劳性能的影响研究
Influence of Crossbeam Web Cutout Shape on Fatigue Performance of Steel Orthotropic Deck
高立强1
作者信息
- 1. 中铁大桥局集团桥梁科学研究院有限公司，武汉 430034
- 折叠
摘要
Abstract
Fatigue cracks are prone to appear near the joint of crossbeam web with rib and the edge of web cutout in orthotropic steel bridge deck. In order to understand how cutout shape of crossbeam web affects the fatigue performance of the two details, finite element method is applied. A comparative study is conducted on principal tensile stresses or out-of-plane stress ratio at all investigated points of orthotropic steel bridge deck with different cutout shapes under three actions. Conclusions are obtained as follows:1) under the action of shearing effect, cutout shape has little effect on stress of the joint between crossbeam web and rib, while radius of cutout edge has great effect on stress of edge of cutout;2) under the action of supporting effect, the larger the size of the cutout, the bigger the stress of the joint between crossbeam web and rib;3) under the action of out-of-plane effect, the larger the size of the cutout, the smaller the constraint effect of the crossbeam towards, the rotation deformation of the rib, the smaller the out-of-plane stress ratio.关键词
正交异性钢桥面板/切口形状/疲劳/有限单元法/应力分析Key words
Orthotropic steel bridge deck/Web cutout shape/Fatigue/Finite element method/Stress a-nalysis分类
交通工程引用本文复制引用
高立强..横梁腹板切口形状对正交异性钢桥面板疲劳性能的影响研究[J].铁道标准设计,2014,(12):67-70,71,5.
