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随着我国社会主义建设的蓬勃发展,各种型式的大功率重型机器与对防振要求极高的精密设备大量地出现。为确保其使用安全与设计、工艺上的经济合理,必须妥善地解决在各种振源情况下动力机器基础设计所涉及的土动力学问题。为此,对黄土地基动力性能方面的研究就有较大的意义。目前,在机器基础设计方面有两种常用的方法。一种是控制基础的固有频率与机器转速或频率至少相差20～30%以避免产生共振,称之为非共振法。另一种是控制基础
With the vigorous development of socialist construction in our country, various types of high-power heavy-duty machines and precision equipment with high anti-vibration requirements have appeared in large numbers. In order to ensure safety, design, and economics of the process, the dynamics of the soil involved in the basic design of the power machine under various vibration sources must be properly addressed. For this reason, the research on the dynamic performance of loess foundation is of great significance. At present, there are two common methods used in machine basic design. One is that the natural frequency of the control basis is at least 20-30% different from the machine speed or frequency to avoid resonance, which is called non-resonance method. The other is the control basis