详细分析了悬臂墙式黏滞阻尼器层间位移利用率（阻尼器位移与楼层位移之比）中阻尼器位移的三个组成部分，即楼层位移、梁柱节点转动、悬臂墙自身变形所引起的阻尼器位移。推导了层间位移利用率与阻尼器布置位置和消能子结构梁柱刚度比两个参数之间的关系，并采用与这两个参数相关的修正函数来考虑仿真模拟中较为繁琐的阻尼器动刚度问题，得到实用的层间位移利用率计算公式。研究结果表明：层间位移利用率在阻尼器靠边布置时小于1，居中布置时大于1，且布置越接近梁跨中层间位移利用率越大；随着消能子结构梁柱刚度比的增大，层间位移利用率在阻尼器靠边布置时增加，居中布置时减小，即都更接近于1；层间位移利用率越大，达到同样期望附加阻尼比所需的附加阻尼越小，体现出更好的经济性。最后，通过工程实例充分地验证了该减震设计方法的正确性与实用性。
Abstract
Three components of story drifts utilization ratio were analyzed in the cantilever wall viscous damper, namely by story lateral displacement, beam-column joints rotate and cantilever wall deformation itself caused, were detailed analysis. Derived the relation between story drifts utilization ratio and damper arrangement position, the stiffness ratio for beam and column of energy dissipation substructure, and used the correction function associated with above two parameters to consider the simulation problem of more complicated dynamic stiffness of the damper, obtained practical story drifts utilization ratio formula for calculation. The results showed that: the story drifts utilization ratio was less than 1 when the damper arrangement edge, when placed in the middle was greater than 1, and the value of story drifts utilization ratio was increased with the damper arrangement closer the middle of beam. And story drifts utilization ratio was closer to 1 with the stiffness ratio for beam and column of energy dissipation substructure increased , which was increased when the damper arrangement edge, decreased when placed in the middle. The larger story drifts utilization ratio was, the smaller additional damping need for achieving the same desired additional damping ratio, and the better economy gained. Finally, the project examples showed the correctness and practicability of the energy dissipation design method.
关键词
层间位移利用率 /
附加阻尼 /
黏滞阻尼器 /
消能减震
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Key words
story drifts utilization ratio /
additional damping /
viscous fluid damper /
energy dissipation
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参考文献
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