A new approach to system identification and damage detection of high‐rise buildings
A new approach to system identification and damage detection of high‐rise buildings
复制标题
高层建筑系统识别和损伤检测的新方法
DOI：
10.1002/stc.1486
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发表时间：
2013
影响因子：
5.4
通讯作者：
I. Takewaki
中科院分区：
文献类型：
--
作者：
M. Kuwabara;S. Yoshitomi;I. Takewaki
提出了一种高层建筑系统识别与损伤检测的新方法，该方法将高层建筑用剪切弯曲模型表示。该方法旨在从特定楼层上方和下方的楼层加速度中找到特定楼层的剪力和弯曲刚度。该方法的特殊之处在于，根据有限的楼板加速度，推导出一组楼层剪力和弯曲刚度的封闭形式表达式。结果表明，该方法适用于两层楼板加速度的检测，且检测过程简单，可直接从零频率处的频率函数变化进行损伤检测。研究表明，通过引入带有传递函数约束的ARX（带有外源输入的自回归模型）模型，可以克服低频范围内特定函数预测的困难。版权所有©2012 John Wiley & Sons， Ltd。
A new method of system identification and damage detection of high‐rise buildings is proposed in which high‐rise buildings are represented by a shear‐bending model. The method is devised to find the story shear and bending stiffnesses of a specific story from the floor accelerations just above and below the specific story. The special characteristic of the proposed method is to derive a set of closed‐form expressions for the story shear and bending stiffnesses in terms of the limited floor accelerations. It is demonstrated that the method is suitable for the damage detection because the observation of floor accelerations at two stories is a simple task and damage detection can be performed directly from the change of a specific function of frequency at zero frequency. It is shown that a difficulty of prediction of the specific function in a low frequency range can be overcome by introducing an ARX (Auto‐Regressive model with eXogenous input) model with constraints on transfer functions. Copyright © 2012 John Wiley & Sons, Ltd.