Fatigue Assessment of Riveted Railway Bridges
Fatigue Assessment of Riveted Railway Bridges
复制标题
铆接铁路桥梁的疲劳评估
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
M. Chryssanthopoulos
中科院分区：
文献类型：
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作者：
B. Imam;T. D. Righiniotis;M. Chryssanthopoulos
本文的目的是介绍一座典型的铆接铁路桥的有限元分析结果。本文的第一部分介绍了过去与各种铆接铁路桥疲劳评估相关的案例研究。本文的第二部分介绍了在典型的现代列车荷载和假定的历史列车荷载作用下，熟铁桥的有限元分析结果。这些结果是以疲劳损伤和相关的铆接连接剩余寿命估计的形式出现的。通过按S-N标准和不同的细部分类对节点进行疲劳排序，确定疲劳最关键的节点为假定完全转动连接固定的内纵梁-横梁节点。结果表明，动态放大对剩余疲劳寿命的估计有很大影响。
The purpose of this paper is to present fatigue-related results obtained from finite element analyses of a typical riveted railway bridge. The first part of the paper deals with past case studies related to the fatigue assessment of various riveted railway bridges. The second part of the paper presents the results obtained from the finite element analyses of the wrought-iron bridge under typical present-day and assumed historical train loadings. These results are in the form of fatigue damage and associated remaining life estimates of the riveted connections. By fatigue-ranking the connections on an S-N basis and under different detail classifications, the most fatigue-critical connections are identified as being the inner stringer-to-cross-girder connections assuming full rotational connection fixity. Dynamic amplification is shown to affect remaining fatigue life estimates considerably.