Developing a smart civil structure, in which the structure instantaneously identifies damages during vibration and makes decisions to compensate or reduce them, is one of the new issues in the seismic control of structures. One of the most important challenges in asymmetric buildings is the torsion due to the damage occurrence in the structure during severe excitation. The aim of this study is to try to reduce the torsional effects and dynamic responses of the structure by combining two strategies, including real time structural health monitoring (SHM) and semi-active control. Hence, a new damage detection method based on identified Markov parameters of the system is proposed to identify the damage in 3-D shear model structures. Also, in order to create a smart structure, a new controller is designed to regulate mechanical characteristics of the installed adaptive stiffness devices based on the detected damages and eccentricity variations in the structure. The performance of the proposed controller and damage detection method is investigated through numerical examples under the influence of various earthquake records. The obtained results reveal that the proposed method estimates the location, amount, and type of damages with acceptable accuracy even with noise contamination of the measured data. Moreover, the presented controller can effectively reduce the increase in the torsional response of the structure owing to the damage occurrence during strong ground motions.

中文翻译：

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使用在线 3-D 损伤检测和自适应刚度装置对非对称建筑物进行扭转控制

开发智能土木结构，其中结构在振动过程中即时识别损坏并做出补偿或减少它们的决定，是结构抗震控制中的新问题之一。非对称建筑中最重要的挑战之一是由于在强烈激励下结构中发生的损坏而产生的扭转。本研究的目的是通过结合两种策略，包括实时结构健康监测 (SHM) 和半主动控制，尝试减少结构的扭转效应和动态响应。因此，提出了一种基于系统已识别马尔可夫参数的新损伤检测方法来识别 3-D 剪切模型结构中的损伤。此外，为了创建智能结构，新控制器旨在根据检测到的结构损坏和偏心变化来调节安装的自适应刚度装置的机械特性。在各种地震记录的影响下，通过数值例子研究了所提出的控制器和损坏检测方法的性能。获得的结果表明，即使在测量数据受到噪声污染的情况下，所提出的方法也能以可接受的精度估计损坏的位置、数量和类型。此外，所提出的控制器可以有效地减少由于强烈地面运动期间发生损坏而引起的结构扭转响应的增加。在各种地震记录的影响下，通过数值例子研究了所提出的控制器和损坏检测方法的性能。获得的结果表明，即使在测量数据受到噪声污染的情况下，所提出的方法也能以可接受的精度估计损坏的位置、数量和类型。此外，所提出的控制器可以有效地减少由于强烈地面运动期间发生损坏而引起的结构扭转响应的增加。在各种地震记录的影响下，通过数值例子研究了所提出的控制器和损坏检测方法的性能。获得的结果表明，即使在测量数据受到噪声污染的情况下，所提出的方法也能以可接受的精度估计损坏的位置、数量和类型。此外，所提出的控制器可以有效地减少由于强烈地面运动期间发生损坏而引起的结构扭转响应的增加。