| Analysis of Negative Skin Friction on Single Pile above a Tunnel |
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| 作者姓名： | 王志亮 刘学庆 |
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| 作者单位： | Research Institute of Geotechnical Engineering，Hohai University，SINOPEC Baling Petrochemical Co. Ltd. Nanjing 210098，China，Yueyang 414014，China |
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| 摘 要： | 1 Introduction Itiswellknownthatthedirectionofskinfrictionisdecidedbytherelativedisplacementbetweenpileanditssurroundingsoil.Ifsettlementvelocityoftheneighboringsoilisgreaterthanthatofthepile ,therewillbenegativeskinfrictiononpile ,otherwiseitwillprod…
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| 关 键 词： | Duncan－Chang模型 有限元法 非线性 土壤 土力学 沉降 负表面摩擦力 中性点 |
Analysis of Negative Skin Friction on Single Pile above a Tunnel |
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| Wang Zhiliang,Liu Xueqing.Analysis of Negative Skin Friction on Single Pile above a Tunnel[J].Journal of Southwest Jiaotong University,2003,11(1):66-70. |
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| Authors: | Wang Zhiliang Liu Xueqing |
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| Institution: | 1. Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China
2. SINOPEC Baling Petrochemical Co. Ltd., Yueyang 414014, China |
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| Abstract: | A finite element program with two different soil models is adopted to study the negative skin friction of an unloaded single pile embedded in the settlement trough of a tunnel. The results show that it is necessary to consider the nonlinear property of soil and to set interface elements between piles and soil in analysis of the negative skin friction of piles. Among a pile group, the pile located above the tunnel centerline bears larger downdrag than the ones far away from tunnel centerline. |
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| Keywords: | negative skin friction downdrag neutral point Duncan Chang model Goodman element |
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