水文地质工程地质2011，Vol.38Issue(2)：46-51,6.
基于双向地震作用下边坡共振特性与固有频率研究
Study on resonance characteristics and natural frequency of slope under bi-directional seismic action
摘要
Abstract
One of the most important issues in seismic design is to avoid resonance, and presently there were few studies about this issue in slope engineering. In this paper, the resonance law and natural frequency of slope under bi-directional seismic were studied by Finite Element Method. The results showed that although the slope had multiple natural frequencies, only the resonance peak of first three order natural frequency is most prominent, especially the first order frequency resonance peak, and there was no obvious resonance in other frequency. Resonance response of the slope under bi-directional seismic had the action of vertical amplification and free surface amplification. The resonance peak was declining with the increasing of damping,and resonance curve was gradually gentle. The chief influential factors of natural frequency of the slope were studied deeply. The natural frequency formula of slope was established by regression analysis, of which error calculation was lower after testing.关键词
边坡/地震/共振/固有频率/回归分析分类
天文与地球科学引用本文复制引用
言志信,张学东,张森,张刘平,曹小红..基于双向地震作用下边坡共振特性与固有频率研究[J].水文地质工程地质,2011,38(2):46-51,6.基金项目
国家自然科学基金资助项目(10672191) （10672191）
高等学校博士学科点专项科研基金资助课题项目(20090211110016) （20090211110016）
甘肃省自然科学基金计划项目(096RJZA048) （096RJZA048）
