Extracting the bridge frequencies indirectly from a passing vehicle: Parametric study
Extracting the bridge frequencies indirectly from a passing vehicle: Parametric study
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DOI：
10.1016/j.engstruct.2009.06.001
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发表时间：
2009-10-01
影响因子：
5.5
通讯作者：
Chang, K. C.
中科院分区：
文献类型：
--
作者：
Yang, Y. B.;Chang, K. C.
以往从过往车辆的动力响应中间接提取桥梁频率的研究主要集中在该技术的可行性上。关于系统关键动力参数对过往车辆垂向响应影响的研究较少。为了填补这一空白，将研究关键参数，不仅是为了评估它们，而且是为了增加成功识别相对影响和关注的桥梁频率的可能性。将根据关键参数定义和表示各种幅值比，作为评估从过往车辆中成功识别桥梁频率的概率的有用指标。对于要识别一个或两个桥梁频率的两种情况，研究表明，在成功识别桥梁频率的过程中，初始幅值比起着比其他两种情况更重要的作用。并对该技术在现场的应用提出了建议。(C)2009爱思唯尔有限公司。保留所有权利。
Previous studies on the extraction of the bridge frequencies indirectly from the dynamic response of a passing vehicle were focused primarily on the feasibility of the technique. Few investigations have been conducted to study the effects of key dynamic parameters of the system on the vertical response of the passing vehicle. To fill such a gap, the key parameters will be studied not only for evaluating their but for increasing the probability of successfully identifying the bridge frequencies of relative influence, concern. Various amplitude ratios will be defined and expressed in terms of the key parameters, serving as useful indicators for evaluating the probability of successful identification of the bridge frequencies from the passing vehicle. For the two cases studied, in which either one or two bridge frequencies are to be identified, it was shown that the initial amplitude ratio plays a role that is more important than the others in successful identification of the bridge frequencies. Suggestions are made for application of the technique in the field. (C) 2009 Elsevier Ltd. All rights reserved.