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首页> 外文期刊>Journal of Sound and Vibration >Approximate analysis method for interstorey shear forces in structures with active variable stiffness systems
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Approximate analysis method for interstorey shear forces in structures with active variable stiffness systems

机译：主动变刚度系统结构层间剪力的近似分析方法

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It has been demonstrated that active variable stiffness (AVS) systems may be effective for response control of building structures subjected to earthquake excitations. Because the performance of structures with AVS systems exhibits strong nonlinearity, the classical dynamic analysis method for linear structures, such as the mode-superposition method, is not applicable to structures with AVS systems. In this paper, an approximate analysis method is proposed for the maximum interstorey shear forces in structures with AVS systems. Firstly, a new equivalent relationship between single-degree-of-freedom (sdof) structures with AVS AA systems and so-called fictitious linear structures is established, Then, the new equivalent relationship is used to revise the approximate-mode-superposition (AMS) approach for multi-degree-of-freedom (mdof) structures with AVS systems, which was previously suggested by the authors. Subsequently, extensive numerical studies are conducted using the revised AMS approach for building structures equipped with AVS systems and subjected to different types of artificial earthquake excitations. Based on the simulation results, an approximate analysis method is proposed for the maximum interstorey shear forces in structures with AVS systems. The maximum interstorey shear forces in example structures subjected to actual earthquake excitations are obtained using the proposed method, and the results are compared with those obtained using the time-history analysis method. It is shown that the results estimated using the proposed method generally agree well with those obtained using the time-history analysis method. (c) 2004 Elsevier Ltd. All rights reserved.
机译：已经证明，主动可变刚度（AVS）系统对于受地震激发的建筑结构的响应控制可能是有效的。由于具有AVS系统的结构的性能表现出很强的非线性性，因此线性结构的经典动态分析方法（如模式叠加法）不适用于具有AVS系统的结构。本文针对AVS系统结构中的最大层间剪力提出了一种近似分析方法。首先，建立了具有AVS AA系统的单自由度（sdof）结构与所谓的虚拟线性结构之间的新的等价关系，然后，使用该新的等价关系来修改近似模式叠加（AMS）作者先前建议使用AVS系统处理多自由度（mdof）结构的方法。随后，使用修订后的AMS方法对配备AVS系统并经受不同类型的人工地震激发的建筑结构进行了广泛的数值研究。基于仿真结果，提出了一种具有AVS系统的结构中最大层间剪切力的近似分析方法。使用所提出的方法获得了经受实际地震激励的示例结构中的最大层间剪切力，并将结果与​​使用时程分析法获得的结果进行了比较。结果表明，使用所提出的方法估计的结果通常与使用时程分析方法获得的结果一致。 （c）2004 Elsevier Ltd.保留所有权利。

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