【摘要】 为研究大高宽比隔震结构的多维抗震性能,对一缩尺1∶4比例高宽比为5的铅芯橡胶垫隔震结构模型进行了水平和竖向双向地震波输入下的振动台试验研究.通过输入不同大小和类型的地震波,分析隔震上部结构和隔震支座的地震反应.试验结果表明:隔震上部结构减震效果较好;隔震支座在某些工况下,竖向可进入非线性受拉变形状态,此时的结构存在倾覆危险.试验相关数据的分析可为隔震结构设计理论和规范的编制提供参考.更多还原

【Abstract】 For research on multidimensional earthquake-resistance performance of the isolated structure with large height-width ratio,experimental study on shaking table of isolated structure model with lead-plug rubber bearing on a scale down of 1∶4(height-width ratio 5) in horizontal and vertical earthquake wave input was conducted.Earthquake responses of isolated top structure and isolation bearing were analyzed by inputting earthquake wave with different magnitudes and types.Experimental result indicated that isolated top structure had good reduction vibration effect and the vertical stiffness of rubber bearings was nonlinear tension conduction in some cases.Here isolation structure had overturning danger.Analyse for correlative date can provide experiment reference for design theory and standard program of the isolation structure.更多还原