随机结构的平稳随机地震响应

The Stationary Random Earthquake Response of Stochastic Structures

基于摄动理论,考虑地面运动的相位差,推导了大跨度随机结构在平稳随机地震作用下位移响应的零阶、一阶功率谱密度函数计算公式.算例表明,对大跨度随机结构考虑地震输入相位差的影响十分必要.

Based on the perturbation theory, the paper induces the Zero and First order expressions of power spectral density matrices of the displacements of stochastic structures with the ground motion phase lags taking into account. The numerical example has been given. This paper shows that it is very necessary to take the ground motion phase lags into account for longspan stochastic structures. 