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Evaluation of the limit load capacity of masonry arch bridges

机译:砌体拱桥极限承载力评估

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摘要

Using a 2D decision support system based on a recent analytical model, this paper is the first to demonstrate that bridge specific characteristics require a detailed analysis to determine the collapse load. A parameterized study of the limit load capacity is necessary to calculate the worst case positioning of any kind of load. Because of the complexity of finite element modeling and the computation time requirements of 3D finite elements models for a large number of load positions, it is regularly assumed that collapse positions are situated at the crown of the arc. Empirical testing in this paper clearly demonstrates that this is not the case. The here developed approach allows for a quick scan of any type of masonry arch bridge, thus providing the necessary information on the critical range of load positions to be analyzed in more detail by a 3D modeling approach.
机译:本文使用基于最新分析模型的2D决策支持系统,首次证明桥梁的特定特性需要详细分析才能确定倒塌荷载。必须对极限载荷能力进行参数化研究,以计算任何一种载荷的最坏情况下的位置。由于有限元建模的复杂性以及3D有限元模型对大量载荷位置的计算时间要求,通常假定塌陷位置位于圆弧的顶部。本文中的经验测试清楚地表明并非如此。本文开发的方法可以快速扫描任何类型的砌体拱桥,从而提供有关载荷位置临界范围的必要信息,并通过3D建模方法进行更详细的分析。

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