Characteristics and method of synthesis seismic wave based on wavelet reconstruction

• 来源期刊: 地震学报（英文版）
• 学科: 工学
• 年，卷（期）: 2007,（6）
• 页码范围: 675-683
• 页数: 9页
• 分类号: TU352.1
• 语种: 英文

摘要

A novel method of synthesizing seismic wave using wavelet reconstruction is proposed and compared with the traditional method of using theory of Fourier transform. By adjusting the frequency band energy and taking it as criterion, the formula of synthesizing seismic wave is deduced. Using the design parameters specified in Chinese Seismic Design Code for buildings, seismic waves are synthesized. Moreover, the method of selecting wavelet bases in synthesizing seismic wave and the influence of the damping ratio on synthesizing results are analyzed.The results show that the synthesis seismic waves using wavelet bases can represent the characteristics of the seismic wave as well as the ground characteristic period, and have good time-frequency non-stationary.