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Advanced System Identification for High-Rise Building Using Shear-Bending Model

机译：使用剪切弯曲模型的高层建筑高级系统识别

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摘要

In order to identify physical model parameters of a high-rise building, a new story stiffness identification method is presented based on a shear-bending model and the identification function. Although a shear building model may be the simplest conventional model for representing tall buildings, the system identification (SI) method using that model is not necessarily appropriate. This is because the influence of bending deformation is predominant in such high-rise buildings. For this reason, a shear-bending model is used where the shear and bending stiffnesses are unknown. In the previous researches using the shear-bending model, it was difficult to identify the bending stiffnesses stably and reliably. In this paper, to overcome such instability of bending stiffness identification of the shear-bending model, a new SI algorithm using both the shear model and the shear-bending model is presented. The proposed SI algorithm is based on the observation that the fundamental-mode shape of the identified shear model is similar to that of the shear-bending model identified in the previous SI method. In order to verify the advanced SI method, two different 20-story building models are investigated in the numerical simulations. From the results of the simulations, both the shear and bending stiffnesses of the shear-bending model are identified reliably and stably in the proposed SI method.
机译：为了识别高层建筑的物理模型参数，提出了一种基于剪切弯曲模型和识别函数的楼层刚度识别新方法。尽管剪力建筑模型可能是代表高层建筑的最简单的常规模型，但使用该模型的系统识别（SI）方法不一定合适。这是因为在这种高层建筑中弯曲变形的影响是主要的。因此，在剪切刚度和弯曲刚度未知的情况下使用剪切弯曲模型。在以前的使用剪切弯曲模型的研究中，很难稳定可靠地识别弯曲刚度。为了克服这种剪切弯曲模型识别弯曲刚度的不稳定性，提出了一种同时使用剪​​切模型和剪切弯曲模型的SI算法。提出的SI算法是基于以下观察结果：所识别的剪切模型的基本模式形状类似于先前SI方法中所识别的剪切弯曲模型的基本模式形状。为了验证先进的SI方法，在数值模拟中研究了两种不同的20层建筑模型。从仿真结果可以看出，所提出的SI方法能够可靠，稳定地识别出剪切弯曲模型的剪切刚度和弯曲刚度。

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