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首页> 外文会议>Third Diana World Conference, Oct 9-11, 2002, Tokyo, Japan >Numerical analyses of the Bargower arch bridge
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Numerical analyses of the Bargower arch bridge

机译：Bargower拱桥的数值分析

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摘要

The reported information of a full scale load test to collapse on a single span arch bridge, carried out within the aim of a research program developed by the Transport and Road Research Laboratory in the UK, is taken as reference to assess the ability of finite element models to reproduce the overall behaviour of stone masonry arch barrels. Two different bi-dimensional finite element models are used: (ⅰ) a simplified model where the infill behaviour is simulated with non linear springs acting in the horizontal direction and (ⅱ) a refined model where the infill is discretized in the finite element mesh. In the latter case the non-linear behaviour of the soil is simulated with a plasticity model. In both cases the adopted masonry modelling consists of a discrete approach, in which the joints are represented by initial zero thickness interface elements and the regularly cut to shape voussoirs are represented by continuum linear-elastic elements. The numerical results are compared to the data obtained from the experimental test and the mechanical behaviour of the masonry arch bridge is discussed.
机译：在英国交通运输与道路研究实验室制定的研究计划的目标范围内，对单跨拱桥坍塌进行满载测试的报告信息被用作评估有限元能力的参考。模型可以重现石砌拱桶的整体行为。使用了两种不同的二维有限元模型：（ⅰ）简化模型，其中填充行为是通过沿水平方向作用的非线性弹簧来模拟的；（ⅱ）精化模型，其中填充是在有限元网格中离散化的。在后一种情况下，用可塑性模型模拟土壤的非线性行为。在这两种情况下，所采用的砌体模型均由离散方法组成，在这种方法中，接头用初始零厚度界面元素表示，规则切割成形状的voussoir则用连续线性弹性元素表示。将数值结果与从实验测试获得的数据进行比较，并讨论了砌体拱桥的力学性能。

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