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Fatigue and dynamic load measurements on modular expansion joints

机译:模块化伸缩缝的疲劳和动态载荷测量

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摘要

Modular expansion joints are commonly used on bridges with expansion and contration movements in excess of 127 mm. These joints ensure a serviceable bridge surface, and protect the structure and substructure against water damage. However, these joints are dynamically loaded by truck wheels crossing the joint, and severe fatigue damage has been noted. The various types of modular joints are discussed, and fatigue damage on one joint is described. Analytical studies considering the static and dynamic behaviour of the joint are summarized, and the results are correlated to fatigue design methods.
机译:模块化伸缩缝通常用于桥梁,伸缩运动超过127 mm。这些接头确保了桥梁的使用寿命,并保护结构和下部结构免受水的损害。但是,这些接头是由穿过该接头的卡车车轮动态加载的,并且已经注意到严重的疲劳损伤。讨论了各种类型的模块化关节,并描述了一个关节的疲劳损伤。总结了考虑关节的静态和动态行为的分析研究,并将结果与​​疲劳设计方法相关联。

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