| 降水沉降对竖向受荷单桩的影响 |
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| 引用本文： | 王小燕,何立军,王敏.降水沉降对竖向受荷单桩的影响[J].重庆交通大学学报(自然科学版),2011(Z1):629-633,708. |
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| 作者姓名： | 王小燕 何立军 王敏 |
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| 作者单位： | 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室 |
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| 摘 要： | 针对地下水开采引起的地面沉降区段,研究了降水沉降对竖向受荷桩基的影响.基于单相流假设和Bishop有效应力原理,结合简化的直线型土水特征曲线,建立了反映地下水位下降桩周土饱和-非饱和沉降的数学模型.假设桩土界面极限抗剪强度随深度递增,桩土界面的荷载传递函数为理想弹塑性模型,桩端土采用双曲线模型,采用剪切位移法计算分析了...
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| 关 键 词： | 地下水位下降 饱和-非饱和沉降 负摩阻力 剪切路径 |
Effect of Waterlevel Fall Settlement on Vertically Loaded Single Pile |
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| WANG Xiao-yan,HE Li-jun,WANG Min.Effect of Waterlevel Fall Settlement on Vertically Loaded Single Pile[J].Journal of Chongqing Jiaotong University,2011(Z1):629-633,708. |
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| Authors: | WANG Xiao-yan HE Li-jun WANG Min |
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| Institution: | (State Key Laboratory of Geomechanics & Geotechnical Engineering,Institute of Rock & Soil Mechanics, Chinese Academy of Sciences,Wuhan 430071,Hubei,China) |
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| Abstract: | The working behavior of single pile with vertical load in subsidence area during groundwater recession was studied through theoretical analysis.Based on the single-phase flow hypothesis and the Bishop unsaturated effective stress principle,a mathematical model which could reflect the settlement in both saturated zone and unsaturated zone was established incorporating the linear soil and water characteristic curve.Assuming that the load transfer function was ideal elastic-plastic for the pilesoil interface,shear strength of which increasing with depth,and hyperbolic model for pile endpoint,then,Q-Scurves,side friction stress along the pile were analyzed according to the shear displacement method during waterlevel fall. |
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| Keywords: | waterlevel fall saturated-unsaturated settlement negative friction shear stress path |
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