摘要
通过对强震加速度记录估算同震位移技术自20世纪40年代以来国内外研究成果的总结,系统地阐述了通过近断层加速度记录计算同震位移的相关理论、方法的发展历程和成就。首先简述了基于强震记录估算同震位移的意义和普遍存在的漂移现象,然后总结了从模拟记录到数字记录两个阶段计算同震位移所取得的成果,接着归纳了为解决漂移现象所采取的3种基于时程拟合的方法和2种基于小波分析的方法,最后对基于数字强震仪记录估算同震位移的未来研究进行了展望。
According to the review of coseismic displacements estimated from strong-motion accelerograms since 1940, the related theory and methods are systematically summarized. The importance of the coseismic displacement and common drifting phenomenon are discussed at first. Then the effort for estimating the displacement based on ac- celerograms from analog phase to digital phase is presented mainly in chronological sequence. Next the noise causing drifting is divided into five models, and two kinds of corresponding estimation methods fitting by three kinds of time histories and by two kinds of wavelet analyses are discussed. Finally, the prospects of future researches are expounded.
出处
《世界地震工程》
CSCD
北大核心
2011年第3期73-80,共8页
World Earthquake Engineering
基金
国家科技支撑计划课题项目(2009BAK55B05)
国家自然科学基金重大研究计划项目(90715038)
关键词
加速度
永久位移
噪音模型
拟合
小波分析
near-fauh acceleration
coseismic displacement
noise model
fitting
wavelet analysis
