摘要
利用快速傅立叶变换(即FFT算法)进行了地震波的数字频谱分析和地震波的反演,结合坝与地基动力相互作用的工程实例,对地震波的2种输入方法进行了动力分析比较。结果表明,将地面自由场地震记录反演到岩基面,作为计算建筑物动力响应的地震波,更贴近实际工况。
This paper presents the fast Fourier transform algorithm (FFT) in the digital frequency analysis and the inversion of earthquake wave.Taken the case of project of dynamical reciprocity between dam and foundation,two methods of earthquake wave input were analyzed and compared.The result indicated that the data of surface earthquake wave reversed on the foundation rock was regarded as the earthquake wave that the building dynamically responded to.This calculation is close to the actual condition.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2005年第3期121-124,共4页
Journal of Northwest A&F University(Natural Science Edition)
基金
陕西省水利科技计划项目(2003SK-12)
关键词
水工结构
动力计算
地震波
反演计算
hydrostatic structure
power calculation
seismic wave
inversion calculation
