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Progressive Collapse of a Cable Stayed Bridge

机译:电缆呆的桥梁的渐进崩溃

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Progressive collapse is a persistent spread and enlargement of initial local failure of structures characterized by a discrepancy between the initial failure and its resulting extensive collapse. Although great efforts have been contributed to the progressive collapse of building structures, comparably small attention has been paid to the bridge structures, especially the cable-stayed bridges. This study demonstrates modelling and analysis of a typical cable stayed bridge through a nonlinear dynamic procedure. Furthermore, the response of the structural model is discussed for multiple types of critical cable loss cases. The results indicated a decrease in the possibility of failure progression of the cable stayed model when the location of the failed cables was closer to the pylon. A definite progressive collapse pattern was also identified along this procedure.
机译:逐步崩溃是一种持续的展开和扩大结构的初始局部失败,其特征在于初始失败与其产生的广泛崩溃之间的差异。虽然巨大的努力为建筑物结构的逐步崩溃做出了贡献,但是对桥梁结构的较差的关注,特别是缆车座桥梁。本研究通过非线性动态程序展示了典型电缆缓冲桥的建模和分析。此外,讨论了结构模型的响应,用于多种类型的关键电缆丢失情况。结果表明,当失败电缆的位置更接近塔架时,电缆缓存模型的失效进展的可能性降低。沿着该程序识别出明确的渐进崩溃模式。

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