| 拟负刚度阻尼减振结构的动力特性与减振效果分析 |
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| 引用本文： | 史鹏飞,吴斌.拟负刚度阻尼减振结构的动力特性与减振效果分析[J].地震学刊,2009(3):300-305. |
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| 作者姓名： | 史鹏飞 吴斌 |
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| 作者单位： | 哈尔滨工业大学土木工程学院,哈尔滨150090 |
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| 基金项目： | 基金项目：国家重点基础研究发展计划（973计划）项目（2007CB714204）、国家科技支撑计划项目（2006BAJ03806）资助 |
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| 摘 要： | 对拟负刚度阻尼减振结构的动力特性与减振效果进行了研究。首先，证明了采用拟负刚度控制方法时，结构响应与外荷载之间满足齐次性；其次，对拟负刚度阻尼减振结构的加速度放大系数和位移放大系数进行了研究，并与粘滞阻尼减振结构的加速度放大系数和位移放大系数进行了比较；最后，对地震荷栽作用下拟负刚度阻尼减振结构的减振效果进行了分析。研究结果表明：当外荷载与结构的频率比大于1或结构的周期较长时，拟负刚度控制对结构绝对加速度的控制效果要好于粘滞阻尼减振结构的控制效果，对结构位移的控制效果要差于粘滞阻尼减振结构的控制效果。
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| 关 键 词： | 拟负刚度控制 粘滞阻尼器 绝对加速度 加速度放大系数 位移放大系数 |
Analysis of Dynamic Characteristics and Control Performance for Structures with Pseudo-Negative Stiffness Dampers |
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| SHI Peng-fei,WU Bin.Analysis of Dynamic Characteristics and Control Performance for Structures with Pseudo-Negative Stiffness Dampers[J].Journal of Seismology,2009(3):300-305. |
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| Authors: | SHI Peng-fei WU Bin |
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| Institution: | (School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China) |
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| Abstract: | Dynamic characteristics and control performance of structures with pseudo-negative stiffness dampers are studied. First, the homogeneity between structural response and external loading is proved when the pseudo-negative stiffness control is used. Second, acceleration and displacement magnification factors of a structure with pseudo-negative stiffness dampers are studied. The acceleration and displacement magnification factors are compared with those of a structure with viscous dampers. Third, the control effect of the structure with the pseudo-negative stiffness dampers subject to earthquake is studied. The results show that the control effect of the pseudo-negative stiffness control on absolute acceleration is better than that of the viscous damper control, but the control effect on displacement is worse than that of the viscous damper control when the frequency ratio between loading and a structure is greater than 1 or the period of the structure is relatively long. |
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| Keywords: | pseudo-negative stiffness control viscous damper absolute acceleration acceleration magnification factor displacement magnification factor |
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