【摘要】 目的:对单向偏心隔震结构进行随机反应分析。方法:对隔震层非线性问题进行线性化,利用过滤白噪声地震动模型,应用虚拟激励法进行计算。结果:计算了偏心结构响应的自功率谱密度和方差。结论:得出扭转耦联效应不可忽视,设置隔震层可以消减上部结构的响应,适当的加大隔震层的扭转柔性可以降低结构的响应,也就是可以减小扭转效应。更多还原

【Abstract】 Investigations into the non-linear model of base isolation device with equivalent linearization method.Random analysis of eccentric isolated structure is performed with pseudo excitation method and filter white noise ground excitation model.The power spectrum density and variance is calculated,translation-torsion coupling response of eccentric structure is discussed.The torsion coupling response can not be ignored and The response of upper structure can be reduced by use of isolated layer.With the increasing of torsional flexible of isolated layer,the response of structure is decreased as well as torsional effect of eccentric isolated structure.更多还原