长江科学院院报2018，Vol.35Issue(4)：72-75,87,5.DOI:10.11988/ckyyb.20161192
大坝强震动响应参数放大效应研究
Amplification Effect of Response Parameters of Dam Strong Motion
裴雪玲 1王波 2杜兴忠3
作者信息
- 1. 贵州省有色金属和核工业地质勘查局物化探总队,贵州都匀558000
- 2. 贵州大学资源与环境工程学院,贵阳550025
- 3. 中国电建集团贵阳勘测设计研究院有限公司,贵阳550081
- 折叠
摘要
Abstract
Strong earthquake monitoring is an important content of dam monitoring.The response of dam subjected to strong motion influenced by geomorphology,site condition and structure of buildings is different.We made a series of preprocessing (eliminating wrong point,baseline correction,bandpass filter) and conventional processing (digital integration and spectrum calculating) for the monitoring record via using the Seismosignal software;and then analyzed the correlation between parameters (the peak of acceleration and Fourier amplitude) and the dam height.The results of analysis revealed that 1) the amplification of peak acceleration and peak Fourier amplitude increased with the increase of elevation,and the amplification at the dam crest was obvious,so did the altitude effect caused by strong-motion;2) the peak dominant frequencies of the Fourier spectrum in three directions (transverse,longi tudinal and vertical) mainly concentrated around 1.5-6.5 Hz,but filtered in other frequency bands.关键词
大坝/强震监测/加速度/傅里叶谱/高程放大效应Key words
dam/strong earthquake monitoring/acceleration/Fourier spectrum/elevation amplification分类
建筑与水利引用本文复制引用
裴雪玲,王波,杜兴忠..大坝强震动响应参数放大效应研究[J].长江科学院院报,2018,35(4):72-75,87,5.
