| 黄土滑坡微型桩抗滑作用现场试验与数值模拟 |
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| 引用本文： | 王树丰,殷跃平,门玉明.黄土滑坡微型桩抗滑作用现场试验与数值模拟[J].水文地质工程地质,2010,37(6):22-26. |
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| 作者姓名： | 王树丰 殷跃平 门玉明 |
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| 作者单位： | 长安大学地质工程与测绘工程学院;中国地质调查局; |
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| 摘 要： | 通过现场大型模拟试验和数值(FLAC3D)模拟,研究了黄土滑坡中微型桩滑坡推力及桩后土体抗力分布规律。综合试验结果及数值分析认为:滑坡推力在微型桩上的分布形式可近似认为为三角形,推力在滑面处达到最大值;滑坡推力在五排桩上的分配系数为:0.279,0.195,0.189,0.161,0.176;桩后土体抗力与滑坡推力变化趋势相对应,在滑面附近达到最大值;根据实测值绘出微型桩P-y曲线,并拟合出相应公式,其成果可为微型桩变形破坏机理分析提供基础资料,为微型桩设计提供参考。
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| 关 键 词： | 微型桩 物理试验 滑坡推力 土体抗力 P-y曲线 |
In-situ test and numerical analysis of skid resistance for micropile to loess landslide |
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| WANG Shu-feng,YIN Yue-ping,MEN Yu-ming.In-situ test and numerical analysis of skid resistance for micropile to loess landslide[J].Hydrogeology and Engineering Geology,2010,37(6):22-26. |
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| Authors: | WANG Shu-feng YIN Yue-ping MEN Yu-ming |
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| Affiliation: | 1.College of Geology Engineering and Geomatics,Chang’an University,Xi’an 710054,China;2.China Geological Survey,Beijing 100037,China |
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| Abstract: | Based on tests of large-scale physical models and numerical analysis(FLAC3D),distribution of landslide-thrust and resistance of soil acting on micropiles in loess landslide were studied.Results from in-situ tests and numerical modeling indicate that the distribution mode of landslide-thrust is triangle,which reach its maximum at the sliding surface.Distribution coefficient for landslide-thrust on the five rows of micropiles is 0.279,0.195,0.189,0.161,0.176.Only resistance near the sliding surfac... |
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