以耗能比例因子最大为目标函数,同时考虑隔震层最大滑移位移、残留位移和最大基底剪力系数等约束条件,分别输入不同场地不同幅值的地震波,探讨了屈服剪力系数和第二隔震周期的最优取值范围。研究表明:屈服剪力系数的最优取值范围因不同场地不同幅值的地震波而不同;对Ⅰ类―Ⅳ类场地,隔震体系在低幅值和高幅值罕遇地震作用下,四个体系地震反应指标对第二隔震周期的变化规律大致相同,建议第二隔震周期取4s―6s为宜。 Considering the maximum slip displacement, residual displacement and maximum base shear coefficient of seismic isolation, the seismic wave with different amplitude is input to the maximum of energy dissipation factor, and the relationship between yielding shear coefficient and Second, the optimal range of isolation cycle value. The results show that the optimal value range of yielding shear coefficient varies with different amplitude seismic waves in different sites. For class Ⅰ-Ⅳ sites, under the action of rare earthquakes of low amplitude and high amplitude, The seismic response indexes of the two systems are almost the same to the second isolation cycle. It is advisable to take 4s-6s for the second isolation cycle.