Modelling the non-linear behaviour of the pot bearings of railway bridge KW51

Menno van de Velde, K. Maes, G. Lombaert
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引用次数: 1

Abstract

Railway bridge KW51 in Leuven, Belgium, has been monitored since October 2018 with the aim of constructing a digital twin, i.e. a virtual representation that mimics the behaviour of the actual struc- ture. A linear finite element model of the bridge was updated using measurements carried out on the bridge. The pot bearings of the bridge, however, are found to behave in a non-linear way. This paper describes a methodology to account for this non-linear behaviour in the model, where friction in the bearings is accounted for by means of non-linear Bouc-Wen elements. The first results are presented, showing that the overall non-linear behaviour of the bearings during a train passage is well captured but that further research is needed to calibrate the model parameters.
KW51铁路桥梁承台非线性行为建模
比利时鲁汶的KW51铁路桥自2018年10月以来一直受到监测,目的是构建一个数字双胞胎,即模仿实际结构行为的虚拟表现。利用在桥梁上进行的测量,更新了桥梁的线性有限元模型。然而,发现桥梁的锅轴承的行为是非线性的。本文描述了一种方法来解释模型中的这种非线性行为,其中轴承中的摩擦是通过非线性Bouc-Wen元素来解释的。提出了第一个结果,表明轴承在火车通行期间的整体非线性行为被很好地捕获,但需要进一步的研究来校准模型参数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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