小波变换在地震动模拟中应用研究
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摘要
对模拟随机地震动的非平稳性进行了探讨,利用小波变换,通过分析地震动中各频率成分,利用小波系数与功率谱密度函数的关系模拟地震动的非平稳特性,和传统的平稳分析模型相比,更符合地震动实际,为进一步研究奠定了基础。
The study explores the nonstationarity in the simulation of random ground motion,simulates the nonstationarity feature of the ground motion by adopting the wavelet transform and analyzing all sorts of frequency components in the ground motion,and utilizing the relationship between the wavelet coefficients and the power spectral density function,and indicates it is more consistent with the factual ground motion by comparing its with the traditional stable analyzing models,so as to lay the foundation for further research.
The study explores the nonstationarity in the simulation of random ground motion,simulates the nonstationarity feature of the ground motion by adopting the wavelet transform and analyzing all sorts of frequency components in the ground motion,and utilizing the relationship between the wavelet coefficients and the power spectral density function,and indicates it is more consistent with the factual ground motion by comparing its with the traditional stable analyzing models,so as to lay the foundation for further research.
引文
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[2]徐国栋.强震地面运动的超随机特性研究[J].地震工程与工程振动,2005,25(2):1-9.
[3]欧进萍,王光远.结构随机振动[M].北京:高等教育出版社,1998.
[4]白泉.基于平稳离散小波变换的地震动时程模拟[J].世界地震工程,2009,25(3):124-129.
[2]徐国栋.强震地面运动的超随机特性研究[J].地震工程与工程振动,2005,25(2):1-9.
[3]欧进萍,王光远.结构随机振动[M].北京:高等教育出版社,1998.
[4]白泉.基于平稳离散小波变换的地震动时程模拟[J].世界地震工程,2009,25(3):124-129.
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