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首页> 外文期刊>International journal of steel structures >Effect of Structural Uncertainty on Seismic Response of Steel Moment-resisting Frames Equipped with Tuned Mass Dampers
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Effect of Structural Uncertainty on Seismic Response of Steel Moment-resisting Frames Equipped with Tuned Mass Dampers

机译：结构不确定性对装有调谐质量阻尼器的抗弯矩钢框架地震响应的影响

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Tuned mass dampers (TMDs) can be used to absorb the input energy of the applied loads, and reduce the response of building frames. However, inherited uncertainties in structural characteristics of building frames can significantly affect their response and counteract the effectiveness of vibration absorbing devices such as TMDs. In this study, by calculating cumulative damage indices for stories of the structure, failure probability of two steel moment-resisting frames equipped with TMDs has been studied in presence of uncertainty in characteristics of the structure. Cumulative inelastic deformation of structural elements in each story has been used to calculate the damage representative of that story, based on weighted average approach. Even though the cumulative response of the deterministic model of the structures is reduced by installing TMDs, the results of the numerical simulations on the probabilistic response of the sample structures indicate that for the records that cause excessive damage in the lower stories of the structures, the effect of TMDs on failure probability of the structure can be detrimental.
机译：调谐质量阻尼器（TMD）可用于吸收施加载荷的输入能量，并减少建筑框架的响应。但是，建筑框架结构特性的固有不确定性会显着影响其响应，并抵消诸如TMDs的减震设备的有效性。在这项研究中，通过计算结构层的累积损伤指数，研究了在结构特性不确定的情况下两个装有TMD的钢制抗弯框架的破坏概率。每个故事中结构元素的累积非弹性变形已被用于计算基于加权平均法的那个故事的破坏程度。即使通过安装TMD减少了结构确定性模型的累积响应，但样本结构的概率响应的数值模拟结果表明，对于在结构下层引起过度破坏的记录， TMD对结构失效概率的影响可能是有害的。

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