黄土滑坡微型桩抗滑作用现场试验与数值模拟
Hydrogeology & Engineering Geology(2010)
Abstract
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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Key words
Physical test,Resistance of soil,P-y curve,Micropile,Landslide-thrust
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