Incorporating Active Control of Human-Induced Vibrations in Floors into Buildings
Incorporating Active Control of Human-Induced Vibrations in Floors into Buildings
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将地板人为振动的主动控制纳入建筑物中
DOI：
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发表时间：
2013
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通讯作者：
E. Hudson
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文献类型：
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作者：
E. Hudson
本论文探讨主动振动控制（AVC）的影响，从最初的设计阶段到楼盖结构，使更多的细长大跨度楼盖的建设的目标。
这项工作对知识的最初贡献是调查：一种新的步行力的发展，模拟办公室环境的工作负荷; AVC和调谐质量阻尼器（TMD）用于楼板结构时的有效性之间的比较;调查AVC对整个楼层面积的影响，而不是只考虑单个位置，从而得出关于所需的致动器的典型数量的结论;对AVC系统的功率需求和性能之间的权衡的调查;以及在设计阶段结合AVC的地板的初始生命周期分析（LCA）。
该力模型利用行人同时行走在整个结构中，并使用实验获得的数据进行校准和验证。AVC被认为是一个显着的改善，在TMD的结构的响应被降低到更大的程度上使用一个小得多的惯性质量。AVC的有效性通常仅限于单个间隔内。然而，在每个控制海湾内观察到响应大幅减少。因此，建议每个重要面板需要一个致动器的经验法则来控制给定的地板面积，并且这些间隔的尺寸应最大化以增加AVC的有效性。
高反馈增益仅导致结构响应的轻微改善，因此AVC的非开销功率需求的改善可以通过简单地降低反馈增益来实现。这具有可以使用更小的致动器的额外益处。最初的LCA强调了AVC的高财务成本，但也表明，通过在设计阶段纳入AVC，可以实现潜在的重大材料节省。
This thesis investigates the implications of incorporating active vibration control (AVC) into floor structures from the initial design stage, with the goal of enabling the construction of more slender long-span floors.
The original contributions to knowledge in this work are the investigations into: the development of a novel walking force that simulates the in-service loading of an office environment; the comparison between the effectiveness of AVC and tuned mass dampers (TMDs) when used on floor structures; the investigation into the effect of AVC over the entire floor area rather than considering single locations only, leading to conclusions about typical numbers of actuators that would be required; the investigation into the trade-off between power demand and the performance of an AVC system; and the initial life cycle analysis (LCA) of a floor that incorporates AVC at the design stage.
The force model utilises simultaneous pedestrians walking throughout the structure and was calibrated and verified using experimentally acquired data. AVC was found to be a significant improvement upon TMDs in that the response of the structure was reduced to a greater extent using a much smaller inertial masses. The effectiveness of AVC was generally limited to within a single bay. However, large reductions in response were observed within each controlled bay. Therefore, it is suggested that a rule of thumb of one actuator per significant panel is required to control a given floor area, and that the size of these bays should be maximised to increase the effectiveness of AVC.
High feedback gains resulted in only slight improvements in structural response, therefore improvements in the non-overhead power demand for AVC can be achieved through a simple decrease in the feedback gain. This has the additional benefit that smaller actuators could be utilised. The initial LCA highlighted the high financial cost of AVC but also demonstrated that potentially significant material savings could be realised through incorporation of AVC at the design stage.