Fatigue behaviour of bolt-welded joints for U-ribs in orthotropic steel bridge decks

被引：0
|
作者：
机构：
[1] College of Civil Engineering, Tongji University
[2] China Railway Major Bridge Reconnaissance and Design Institute Co. Ltd.
来源：
Gu, P. (gupsh@tongji.edu.cn) | 1600年 / Science Press卷 / 41期
关键词：
Bolt-welding connection; Fatigue test; Finite element (FE) analysis; Orthotropic steel bridge deck;
D O I：
10.3969/j.issn.0253-374x.2013.06.004
中图分类号：
学科分类号：
摘要：
Two orthotropic steel decks with on-site bolt-welded U-rib connection detailing were designed and fabricated. Static and fatigue tests were then conducted. A finite element (FE) model of the bolt-welded joints was proposed. The FE analysis showed that the longitudinal stresses on the inner connection plate were larger than those on the outer plate, and the stresses were influenced by the out plane bending in the joints. Stress distributed along the connection plate in saddle-like shape. The stresses in the middle-region were larger than those in the end, and fatigue cracks appeared earlier in the middle-region of the inner connection plate in the both specimens. The fatigue strength of bolted U-ribs joint is proposed based on the design curve of category 71 in Eurocode or the design curve of category IX in the Design Code of Steel Railway Bridges. A parameter study was developed to optimize and improve the fatigue performance.
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页码：821 / 825
页数：4
相关论文
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