Wind-Induced Vibration Mitigation in Tall Buildings Using the Tuned Mass-Damper-Inerter
Wind-Induced Vibration Mitigation in Tall Buildings Using the Tuned Mass-Damper-Inerter
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DOI：
10.1061/(asce)st.1943-541x.0001863
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发表时间：
2017-09
期刊：
影响因子：
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通讯作者：
A. Giaralis;F. Petrini
中科院分区：
文献类型：
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作者：
A. Giaralis;F. Petrini
在不同的调谐质量阻尼器(TMDI)拓扑结构中，将经典的线性调谐质量阻尼器(TMD)与惰器相耦合，以抑制高层建筑中引起人员不适的过大风振。参数数值研究包括配备顶层TMD的平面框架，准确地捕捉了74层基准建筑在准平稳空间相关风力场作用下的面内动力行为，考虑了横风向涡脱的影响。结果表明，TMDI通过考虑较小的附加质量值和TMDI连接附加质量到主体结构的层数较多的拓扑结构，比TMD更有效地降低顶层峰值加速度。此外，惯性装置的加入大大减少了TMD冲程，同时验证了发展中的惯性器力的大小可以很容易地被主机结构容纳。相关的说明性例子表明，TMDI满足规范规定的高层建筑的适用性设计要求，与TMD相比，附加质量明显较小，并且惰性装置可以用于在不改变附加质量的情况下提升现有TMD高层建筑的性能。
In this paper the classical linear tuned mass-damper (TMD) is coupled with an inerter, a two-terminal device resisting the relative acceleration of its terminals, in various tuned mass-damper-inerter (TMDI) topologies to suppress excessive wind-induced oscillations in tall buildings causing occupants’ discomfort. A parametric numerical study is undertaken involving a top-floor-TMD-equipped planar frame capturing accurately the in-plane dynamic behavior of a 74-storey benchmark building exposed to a quasi-stationary spatially-correlated wind-force field accounting for vortex shedding effects in the across-wind direction. It is found that the TMDI reduces the peak top floor acceleration more effectively than the TMD by considering smaller attached mass values, and TMDI topologies in which the inerter spans more stories in linking the attached mass to the host structure. Moreover, the inclusion of the inerter reduces dramatically the TMD stroke while it was verified that the magnitude of the developing inerter forces can be readily accommodated by the host structure. Pertinent illustrative examples are included showcasing that the TMDI meets code-prescribed serviceability design requirements for new tall buildings using significantly smaller attached mass compared to the TMD, and that inerter devices can be used to upgrade the performance of existing TMD-equipped tall buildings without changing the attached mass.