A structural damage detection approach using train-bridge interaction analysis and soft computing methods
A structural damage detection approach using train-bridge interaction analysis and soft computing methods
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DOI：
10.12989/sss.2014.13.5.869
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发表时间：
2014-05
影响因子：
3.5
通讯作者：
Xingwen He;M. Kawatani;T. Hayashikawa;Chul‐Woo Kim;F. Catbas;H. Furuta
中科院分区：
文献类型：
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作者：
Xingwen He;M. Kawatani;T. Hayashikawa;Chul‐Woo Kim;F. Catbas;H. Furuta
在本研究中，提出了一种基于列车振动响应的桥梁损伤检测方法，通过引入软计算方法，只使用直接结构分析。该方法首先根据理论和经验的考虑，对桥梁可能的损伤模式进行假设。然后，利用开发的列车-桥梁相互作用分析程序，计算了某一损伤模式下的行车动力响应。当计算结果与记录的响应最一致时，这种损伤模式就是解。然而，由于可能的损伤模式数量巨大，计算所有情况下的桥梁响应非常耗时，因此难以快速确定准确的解。因此，引入软计算方法来快速解决该方法中的问题。本文介绍了该方法的基本概念和过程，并采用两种不同的列车模型和简单梁桥模型对其可行性进行了数值研究。
In this study, a damage detection approach using train-induced vibration response of the bridge is proposed, utilizing only direct structural analysis by means of introducing soft computing methods. In this approach, the possible damage patterns of the bridge are assumed according to theoretical and empirical considerations at first. Then, the running train-induced dynamic response of the bridge under a certain damage pattern is calculated employing a developed train-bridge interaction analysis program. When the calculated result is most identical to the recorded response, this damage pattern will be the solution. However, owing to the huge number of possible damage patterns, it is extremely time-consuming to calculate the bridge responses of all the cases and thus difficult to identify the exact solution quickly. Therefore, the soft computing methods are introduced to quickly solve the problem in this approach. The basic concept and process of the proposed approach are presented in this paper, and its feasibility is numerically investigated using two different train models and a simple girder bridge model.