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Evaluating Fatigue Damage Using Strain Data

机译:使用应变数据评估疲劳损伤

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Fatigue-induced fracture is one of the biggest safety concerns for steel bridges. If fracture occurs, localized damage can propagate to member failure or even bridge collapse. As more bridges near or exceed the end of their intended design lives, bridge owners must make decisions on which bridges can be safely kept in-service and which need to be replaced or retrofitted. Measured data can be integrated with the results from visuals inspections to characterize the fatigue damage at a bridge, thereby providing the information for bridge owners to set priorities among the older structures.
机译:疲劳造成的骨折是钢结构最大的安全问题之一。如果发生骨折,则局部损坏可以传播到成员故障甚至桥梁崩溃。随着近距离或超过其预期设计生活的桥梁,桥商业主必须做出决定,可以在哪些桥接安全保存,需要更换或改装。测量数据可以与视觉检查的结果集成,以表征桥梁的疲劳损坏,从而为桥梁所有者提供信息以在旧结构之间设置优先级的信息。

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