正交异性钢桥面板横隔板切口疲劳应力幅分析

发布时间：2018-06-13 11:27

本文选题：正交异性钢桥面板 + 疲劳应力幅　；参考：《工业建筑》2014年05期

【摘要】：建立全桥模型和简化的钢桥面板局部节段模型,通过子模型法插值得到横隔板疲劳细节模型的边界条件,计算不同车轮横向分布对应的疲劳细节局部应力,研究横隔板参数变化对横隔板疲劳细节损伤的影响。结果表明:混合单元模型与钢桥面板简化模型对应的应力幅相差小于5.0%,采用钢桥面板简化模型分析横隔板疲劳细节受力简单合理。横隔板疲劳细节在车轮偏离中心位置150 mm时应力幅最大,随着车轮偏离中心位置距离的增大,应力幅下降明显。横隔板间距增大,横隔板疲劳细节应力幅上升,增加横隔板厚度可有效改善其疲劳受力性状。
[Abstract]:The whole bridge model and the simplified local segment model of steel bridge face are established. The boundary conditions of the fatigue detail model of the transverse diaphragm are obtained by submodel interpolation, and the local fatigue stress corresponding to the lateral distribution of different wheels is calculated. The effects of the parameters of the transverse diaphragm on the fatigue detail damage of the transverse diaphragm were studied. The results show that the stress amplitude difference between the hybrid element model and the simplified steel bridge panel model is less than 5.0, and the simplified model of steel bridge slab is simple and reasonable to analyze the fatigue details of the transverse diaphragm. The fatigue detail of the transverse diaphragm is the largest when the wheel is 150 mm away from the center, and the stress amplitude decreases obviously with the increase of the distance from the center of the wheel. The fatigue stress amplitude of the transverse diaphragm increases with the increase of the spacing of the transverse diaphragm, and the fatigue behavior can be effectively improved by increasing the thickness of the transverse diaphragm.
【作者单位】：河海大学土木与交通学院;苏州市航道管理处;
【基金】：国家自然科学基金面上项目(51278166) 教育部高等学校博士学科点专项科研基金(20120094110009) 江苏省交通厅科研资助项目(2012Y13)
【分类号】：U443.31;U441.5

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