摘要
本文使用Fokker-Planck方程,给出了基底可滑移刚体在高斯白噪声扰动作用下的滑动速度概率密度函数。利用等效线性化方法,求得了基底可滑移刚体在有限带宽白噪声扰动作用下的均方滑动位移反应和均方滑动速度反应。进而给出了基底滑移隔震刚性房屋滑离基础的滑离概率,并导出了基础附加宽度的计算公式。
In this paper,the probability density function of sliding velocity for a base sliding rigid body subjected to a Gauss white noise excitation is first derived in virtue of the Fokker-Planck equation. By using the equivalent linearization method , the mean square sliding displacement response and the mean square sliding velocity response for a base sliding rigid body under a band limited white noise excitation are obtained. Then, the probability of divorce of superstructure from its foundatoin and the formula for calculating additional width of foundation for rigid buildings with frictional base isolation are presented.
出处
《地震工程与工程振动》
CSCD
北大核心
1993年第2期47-51,共5页
Earthquake Engineering and Engineering Dynamics
