SV波作用下岩质边坡地震稳定性的时频分析方法研究  

RESEARCH ON TIME-FREQUENCY ANALYSIS METHOD FOR SEISMIC STABILITY OF ROCK SLOPE SUBJECTED TO SV WAVE

作　　者：杨长卫[1] 张建经[1] 周德培[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《岩石力学与工程学报》2013年第3期483-491,共9页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金重大研究计划(41030742);2012年西南交通大学优秀博士学位论文培育项目

摘　　要：基于弹性波动理论和概化地质分析模型,利用希伯来–黄(Hilbert-Huang)变换,提出SV波作用下岩质边坡地震稳定性的时频分析方法,并且通过振动台试验和数值分析结果对其合理性进行验证。该方法不仅能够考虑SV波的幅值、频率、持时三要素对边坡地震稳定性的影响,而且能够预测岩质边坡的安全性、滑坡发生的时间和规模,同时也能够为高烈度区支挡结构开展抗震时频设计提供一定的参考。Based on the theory of elastic wave and the summarized geological model,a new time-frequency analysis method of the rock slope seismic stability is put forward by using the Hilbert-Huang transform.The rationality of this method has been verified by the results of shaking table test and numerical simulation.This method not only considers the amplitude-time-frequency effects,but also can forecast the safety of the slope,the time occurring the landslide and its scale.At the same time,this method can provide the valuable references for the time-history seismic design of retaining structure in the high intensity earthquake area.

关 键 词：边坡工程 弹性波动理论 希伯来–黄变换 时频分析方法 地震稳定性 

分 类 号：P642.22[天文地球—工程地质学]