【摘要】 福建省防震减灾指挥中心隔震层采用中国生产的低硬度橡胶隔震支座,测试了该隔震楼在环境振动和隔震层发生初位移时结构的动力特性,得到了结构的前3阶频率、振型和阻尼比,并测得隔震层在小变形时的滞回性能和加速度响应,结果表明,隔震结构的卓越周期比传统结构长,结构振型的阻尼比较大。更多还原

【Abstract】 Lower rigidity rubber supports are employed for the isolation layers of the Fujian province anti-earthquake control center building. The dynamic chayacteristics of this building are measured under environmental vibration and with initial displacements of its isolation layers. Its first three natural frequencies, modal shapes and modal damping ratios are obtained. Its hysteresis loop property and acceleration response are also measured in the condition of small deformation of the isolation layers. The test results show that the first natural period of this vibration isolation building is longer and the corresponding damping ratio higher than those of traditional buildings.更多还原