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Assessment of the stability of isolated vibratory building services systems and the use of inertia blocks

机译：评估隔震建筑服务系统的稳定性和惯性块的使用

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摘要

Inertia blocks are commonly used by engineers to stabilize vibration-isolated building services equipment However, no comprehensive guidelines for the selection of inertia blocks or indices for assessing the effect of inertia blocks on the stability of the vibratory system are available. In this paper, the level of "power transmissibility" is used to assess the performance of vibration isolators, and the level of the "vibration velocity transmissibility" of the supporting floor structure, the "mounted vibration velocity", and the "mounted rotational velocity level" of the vibratory machine are proposed to assess the stability of the vibratory system with various inertia blocks. The results primarily indicate that the use of an inertia block does not affect the performance of vibration isolation. Instead, it decreases the vibration velocity and rotational velocity of the isolated vibratory machine; so it can increase the stability of the vibratory system regardless of whether the machine has slightly or highly uneven mass distribution. The results reveal that, for the machine with highly uneven mass distribution, the degree of an larger inertia block is required to enhance the stability of the isolated vibratory system. Therefore, in addition to proposing indices for assessing the stability of the vibratory system, this paper also provides an insight into the selection of the inertia block based on the mass distribution of an isolated vibratory machine.
机译：工程师通常使用惯性块来稳定隔振的建筑服务设备，但是，没有用于选择惯性块或评估惯性块对振动系统稳定性影响的指标的综合指南。在本文中，“动力传递性”水平用于评估隔振器的性能，支撑地板结构的“振动速度传递性”水平，“固定振动速度”和“固定旋转速度”水平提出了“振动机器的“水平”以评估具有各种惯性块的振动系统的稳定性。结果主要表明，使用惯性块不会影响隔振性能。相反，它降低了隔离式振动机的振动速度和旋转速度。因此，无论机器的质量分布是轻度分布还是高度分布不均，都可以提高振动系统的稳定性。结果表明，对于具有高度不均匀质量分布的机器，需要较大的惯性块度来增强隔离式振动系统的稳定性。因此，除了提出用于评估振动系统稳定性的指标外，本文还基于隔离振动机的质量分布，提供了对惯性块选择的见解。

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  • 来源
    《Building and Environment》 |2010年第3期|758-765|共8页
  • 作者

    Yi Yun; C.M. Mak;

  • 作者单位

    Department of Building Services Engineering, The Hong Kong Polytechnic University. Hung Horn, Kowloon, Hong Kong, People's Republic of China;

    Department of Building Services Engineering, The Hong Kong Polytechnic University. Hung Horn, Kowloon, Hong Kong, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    stability; inertia block; building services systems; vibration isolation;

    机译：稳定性;惯性块建筑服务系统;隔振;

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