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应用质量-阻尼-弹簧简化模型对三向六自由度大型模拟地震振动台进行动力反应计算,文中讨论了振动参数的确定方法。大型振动台基础自振频率通常都在振动台工作频率范围之内,必须考虑基础共振的影响。在进行基础设计时,着重要考虑基础振动幅值以及基础振动对周边环境的影响。
The dynamic response of a three-directional six-DOF large-scale analog seismic shaking table is calculated by using mass-damping-spring simplified model. The method to determine the vibration parameters is discussed in this paper. The basic vibration frequency of a large shaker is usually within the operating frequency range of the shaker. The influence of the fundamental resonance must be considered. In the basic design, it is important to consider the basic vibration amplitude and the basic vibration of the surrounding environment.