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基于FLAC3D的边坡地震反应分析

Seismic Response Analysis of Slope Based on FLAC3D

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【作者】 陈星李建林王家成

【Author】 CHEN Xing1,LI Jian-lin1,2,WANG Jia-cheng1(1.Key Laboratory of Geological Hazards on Three Gorges Reservoir Area,Ministry of Education,China Three Gorges University,Yichang,Hubei 443002,China;2.School of Water Resources and Hydropower,Wuhan University,Wuhan,Hubei 430072,China)

【机构】 三峡大学三峡库区地质灾害教育部重点实验室武汉大学水利水电学院

【摘要】 基于完全非线性的动力分析方法,对边坡地震作用下的稳定性开展研究。分析得出:地震作用下,边坡最大永久位移主要集中于坡面;对于垂直方向上布置的关键点,随高程增加,位移时程表现为"放大",加速度时程呈现"放大"和"滞后";对于水平方向布置的关键点,由坡内向外,位移时程表现为"放大",加速度时程却出现"衰减"和"同步"。研究结果有助于进一步揭示边坡在地震作用下的失稳机制。

【Abstract】 Based on fully non-linear dynamic analysis methods,slope stability under earthquakes was analyzed.It was shown that: Under earthquakes effect,the maximum permanent displacement focused mainly on the surface of the slope;For the vertical key points,with the elevation increasing,the displacement-term expressed as "zoom",the acceleration-term showed "zoom" and "lag";For the horizontal key points,from inside to outside,the displacement-term performed as "zoom",the acceleration-term showed "decay" and "synchronization".The results were helpful to further researches on the mechanism of slope instability under earthquakes.

【关键词】 FLAC3D边坡地震时程分析
【Key words】 FLAC3Dslopeearthquakestime-history analysis
【基金】 国家自然科学基金项目(90610029);湖北省教育厅自然科学研究项目计划项目(Q20091301)
  • 【文献出处】 中国农村水利水电 ,China Rural Water and Hydropower , 编辑部邮箱 ,2010年01期
  • 【分类号】P315.2
  • 【被引频次】12
  • 【下载频次】529
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