摘要
本文在前人研究的基础上给出了一种合成考虑空间相关性多点地震动时程的方法,该方法通过对互功率谱密度矩阵简化,只需要对迟滞相干函数矩阵分解,不需要对互功率谱矩阵进行Cholesky分解,避免了算数矩阵运算,提高了合成的效率。用该方法编制了相应的程序,给出了合成的算例。
A simulation method for spatial correlated multi-point ground motion is proposed. By simplification of cross power spectral density matrix, only decomposition, of lagging coherent density matrix is required instead of Cholesky decomposition of cross power spectral density matrix. Thus complex matrix computation is avoided and the simulation efficiency is improved. A corresponding program has been compiled using the method and an example is drawn.
出处
《地震工程与工程振动》
CSCD
北大核心
2009年第1期58-62,共5页
Earthquake Engineering and Engineering Dynamics
基金
河南省教育厅科技攻关项目(2008A560015)
关键词
多点地震动
合成
互功率谱
迟滞相干函数
multi-point ground motion
simulation
cross power spectral density
lagging coherency function
