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Fatigue Behaviour of Bolt-welded Joints for Uribs in Orthotropic Steel Bridge Decks
Author(s): GU Ping, YAN Zhaofu, SHENG Bo, GHEN Shiming
Pages: 821-
825
Year: 2013
Issue:
6
Journal: Journal of Tongji University(Natural Science)
Keyword: orthotropic steel bridge deck; bolt-welding connection; fatigue test; finite element(FE)analysis;
Abstract: 针对正交异性钢桥面板栓焊连接细节,设计制作两个足尺试验构件,进行了静载、疲劳试验,并建立了有限元计算模型.计算分析发现:纵肋螺栓接头中面外弯矩影响明显,内侧拼接板受力大于外侧;拼接板中纵向应力呈鞍状分布,两个试验构件的疲劳裂纹均在内侧拼接板的中间区域首先出现.建议栓焊接头按Eurocode中的71级或铁路桥梁钢结构设计规范中Ⅸ细节进行疲劳设计.通过有限元模拟计算,对拼接板进行优化设计,改善了栓焊接头的疲劳性能.
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