Tuned mass dampers are one of the most common devices for the passive control of structures subjected to earthquakes. The structure of these dampers consists of three main parameters: mass, damping, and stiffness. Tuned mass dampers reduce the amplitude of the responses affecting on a mode. In most cases, only a single TMD (tuned mass damper) or a few dampers at several points above the building height are installed on the roof of the building, requiring considerable mass and space in some parts of the structure as overhead. It is also more important to predict the elements that will meet the required mass. In this research, the performance of multiple tuned mass dampers (MTMDs) is investigated in L- and U-shaped regular and irregular tall steel buildings with 10 and 20 floors, under the near- and far-field records. Nonlinear time history analysis is also applied to evaluate the multiple tuned mass dampers effects on the seismic responses of the structures. The SAP2000 API and MATLAB genetic algorithm are used to determine the optimal location of the MTMDs in the roof plans of the buildings. The results show the effects of multiple tuned mass dampers in reducing the seismic response of acceleration, displacement, and base shear up to 50, 40, and 40% in average, respectively. The results of determining the optimum location of MTMDs in the models indicate the importance of the symmetry of the dampers relative to the centre of mass of the building.

中文翻译：

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规则和不规则高层钢结构建筑中多重调谐质量阻尼器的最佳位置

调谐质量阻尼器是用于地震结构被动控制的最常见设备之一。这些阻尼器的结构包括三个主要参数：质量，阻尼和刚度。调谐质量阻尼器降低了影响模式的响应幅度。在大多数情况下，在建筑物的屋顶上仅安装一个TMD（调谐质量阻尼器）或在建筑物高度以上几个点安装几个阻尼器，在结构的某些部分需要大量的质量和空间作为架空。预测将满足所需质量的元素也更重要。在这项研究中，根据近场和远场记录，研究了L型和U型10层和20层常规和不规则高层钢结构建筑中多重调谐质量阻尼器（MTMD）的性能。非线性时程分析还用于评估多重调谐质量阻尼器对结构地震响应的影响。SAP2000 API和MATLAB遗传算法用于确定MTMD在建筑物屋顶计划中的最佳位置。结果表明，多重调谐质量阻尼器在将加速度，位移和基础剪切的地震响应分别平均降低多达50％，40％和40％方面具有效果。确定模型中MTMD最佳位置的结果表明，阻尼器相对于建筑物质心的对称性很重要。SAP2000 API和MATLAB遗传算法用于确定MTMD在建筑物屋顶计划中的最佳位置。结果表明，多重调谐质量阻尼器在将加速度，位移和基础剪切的地震响应分别平均降低多达50％，40％和40％方面具有效果。确定模型中MTMD最佳位置的结果表明，阻尼器相对于建筑物质心的对称性很重要。SAP2000 API和MATLAB遗传算法用于确定MTMD在建筑物屋顶计划中的最佳位置。结果表明，多重调谐质量阻尼器在将加速度，位移和基础剪切的地震响应分别平均降低多达50％，40％和40％方面具有效果。确定模型中MTMD最佳位置的结果表明，阻尼器相对于建筑物质心的对称性很重要。