【摘要】 为了了解砂与橡胶粒隔震垫层下隔震结构的抗倾覆特性,以砂与橡胶粒混合隔震垫层、纯砂隔震垫层、非隔震三种情况作为研究对象,建立4组高宽比为1.0,2.0,3.0,4.0的框架结构模型。通过抗倾覆性振动台试验,分析在不同垫层类型、垫层厚度、加速度峰值条件下的上部结构的抗倾覆性能。试验结果表明:结构的抗倾覆性能在砂与橡胶粒隔震垫层下要优于纯砂隔震垫层,非隔震情况下的抗倾覆性能最弱;当加速度峰值加大时,结构的抗倾覆性能随之降低。更多还原

【Abstract】 Taking sand and rubber particle hybrid isolation cushion and pure sand isolation cushion and non-isolated as the research object,4 groups of frame structure models with length-width ratio of 1. 0,2. 0,3. 0,4. 0were established respectively. The anti-overturning performance of the superstructure under different cushion types,cushion thickness and acceleration peak was analyzed with anti-overturning shaking table test. The experimental results showed that the structural anti-overturning performance of the sand and rubber particle hybrid isolation cushion is better than that of pure sand isolation cushion,and the structural anti-overturning performance of the non-isolated cushion is the weakest. With the increase of peak value of the acceleration,anti-overturning performance of the structure decreases.更多还原