首页> 外文会议>Innovative infrastructures - toward human urbanism : Report >An alternative approach of fatigue life predictions in orthotropic steel bridge decks
【24h】

An alternative approach of fatigue life predictions in orthotropic steel bridge decks

机译:正交异性钢桥面板疲劳寿命预测的另一种方法

获取原文
获取原文并翻译 | 示例

摘要

Orthotropic plated decks are widely used in long span steel bridges since they are extremely lightrnweighted and very efficient for resisting localized traffic loads. As this bridge deck consists of arncomplex network of longitudinal and transverse stiffeners, it is very sensitive to fatigue.rnTraditionally fatigue predictions result in a conservative design for the bridge deck since theserntechniques have reached their limits. Therefore, other techniques are necessary to improve thernfatigue life. A possible solution can be the use of fracture mechanics. If these techniques are usedrnfor the case study of the Temse bridge in Belgium, approximately 38,5.10~6 load cycles are neededrnfor a crack length of 600 mm. This is more than the traditional calculations would predict becausernthe FEM-model does not take residual stresses and other welding defects into account. This couldrnbe a possible improvement in future research.
机译:正交各向异性板桥面被广泛应用于大跨度钢桥中,因为它们的重量极轻,并且对于抵抗局部交通负荷非常有效。由于该桥面板由纵向和横向加劲肋的复杂复合网络组成,因此对疲劳非常敏感。传统上,由于现代技术已经达到极限,因此疲劳预测对桥面板进行了保守的设计。因此,需要其他技术来改善疲劳寿命。可能的解决方案是使用断裂力学。如果将这些技术用于比利时的Temse桥的案例研究,则对于600 mm的裂纹长度,大约需要38,5.10〜6个荷载循环。由于FEM模型没有考虑残余应力和其他焊接缺陷,因此这超出了传统计算的预期。这可能是将来研究的可能改进。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号