工业建筑设备地震动输入楼面功率谱研究

Study on the floor power spectrum of the industrial architecture equipment system seismic input

基于线性随机振动理论,提出了工业建筑设备系统地震动输入的楼面功率谱输入机制,选择金井清地震动模型,推导了模型参数,对于单自由度平台结构支承设备,推导了双重过滤楼面谱,适用于小质量无调谐设备系统,对于多自由度结构系统,给出了考虑主子系统耦合动力相互作用的楼面功率谱,适用于大质量设备系统。

Based on the linear random vibration theory, the paper puts forward the floor power spectrum input mechanism of the industrial architecture equipment system seismic input, derives the model parameters by selecting the Jinjingqing ground motion model, derives the double filtering floor power spectrum according to the single degree of freedom platform structure support equipment, which is suitable for the low mass untuned equipment system, gives the floor power spectrum of the interaction of the coupling force of the main system and the subsystem to the multi-degree-of-freedom structure system, which is suitable for the large massequipment system.