地震作用下相邻结构间阻尼器的优化参数研究

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (16) : 117-122.

论文

地震作用下相邻结构间阻尼器的优化参数研究

黄潇1,2，朱宏平1,2

作者信息 +

Study on optimum parameters of dampers interconnecting adjacent structuresunder earthquakes

Huang xiao1,2, Zhu Hongping1,2

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文章历史 +

摘要

对地震作用下相邻结构间连接阻尼器的优化参数理论表达式的适用性作了详细的研究，分别为粘弹性阻尼器和粘滞流体阻尼器。共有两种减震控制目标，使主结构的平均相对振动能量最小和使两相邻结构的总平均相对振动能量最小。采用虚拟激励法，研究了小震作用下结构处于线弹性状态时阻尼器的优化参数取值，详细分析了结构模态阻尼比和场地条件的变化对阻尼器优化参数的影响；采用时域和频域分析方法，研究了强震作用下结构处于弹塑性状态时阻尼器的优化参数值，并与理论值进行了对比。结果表明，结构模态阻尼比和场地条件的变化对阻尼器的优化参数影响很小；结构处于弹塑性状态时阻尼器的优化参数值与结构处于线弹性状态的取值相差不大，均与理论值比较接近，该结论对于阻尼器的优化参数理论表达式的应用非常有利。

Abstract

The application of the explicit formula of dampers between adjacent structures under earthquake excitation is investigated, including the visco-elastic damper and the viscous fluid damper. Two control objectives are selected to minimize the vibration energy of the main structure and to minimize the vibration energy of both adjacent structures. In linear elastic state, the pseudo-excitation method is used to study the optimum parameters of dampers and the effect on the parameter value when the structural modal damping ratio and site conditions change. When two structures are in the elastic-plastic state under strong earthquake excitation, using the white-noise ground motion and several actual earthquake records, the appropriate parameters of dampers are obtained through extensive parametric studies, and compared with the theoretical values. The results show that, changes of the structural modal damping ratio and site conditions have little effect on the optimum parameters; the appropriate parameters of the dampers are nearly the same and relative close to the theoretical values; the conclusion is very beneficial for the use of explicit formula.

导出引用

黄潇;朱宏平;. 地震作用下相邻结构间阻尼器的优化参数研究[J]. 振动与冲击, 2013, 32(16): 117-122

Huang xiao;Zhu Hongping;. Study on optimum parameters of dampers interconnecting adjacent structuresunder earthquakes[J]. Journal of Vibration and Shock, 2013, 32(16): 117-122