摘要
设水平或竖向地面运动是沿水平方向直线传播的平稳随机过程。对于按有限元离散化的一般三维结构,考虑地面运动的相位差,推导了计算其位移及内力响应功率谱密度的表达式。文中给出的对比例题表明,对大跨度结构考虑地震输入相位差的影响是十分必要的。
In this paper, the horizontal or vertical ground motion is considered as a stationary stochastic process travelling along an arbitrary horizontal direction. For general 3D structures modelled according to FEM rules, the expressions of the power spectral density matrices of the displacement and internal force responces are derived with theground motion phase lags taken into account. The examples given in this paper show that it is very necessary to take the ground motion phase lags into account for long span structures.
出处
《固体力学学报》
CAS
CSCD
北大核心
1991年第4期319-328,共10页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金
