摘要
本文建立了恢复力-摩擦基底隔震结构在地震作用下的运动微分方程。地震地面运动被模拟成随机过程。利用等效线性化方法,获得了这种基底隔震结构在地震作用下的均方位移和均方速度反应。根据最大位侈反应的概率分布函数,求得了这种基底隔震结构和与它相应的基底固定结构在给定地震作用下的破坏概率。计算结果表明,这种基底隔震结构在地震作用下有较高的可靠性。
In this paper, the differential equations for motions of structures with the resilience-friction base isolation system under earthquake excitations are established. Earthquake ground motions are modeled as stochastic processes. By means of the equivalent linearization method, mean-square displacement and mean-square velocity responses of the base isolation structures subjected to earthquake excitations are obtained. According to probability distribution functions of maximum displacement responses, failure probabilities of such a base-isolated structure and the corresponding base-fixed structure under given earthquake, excitation are calculated. The calculating results show that the base isolation structures have higher reliability under earthquake excitations.
出处
《地震工程与工程振动》
CSCD
北大核心
1993年第4期81-88,共8页
Earthquake Engineering and Engineering Dynamics
