| 竖向载荷作用下单桩接触面性能分析 |
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| 引用本文： | 钱晓丽,陶龙光,刘波.竖向载荷作用下单桩接触面性能分析[J].辽宁工程技术大学学报(自然科学版),2007,26(1):59-61. |
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| 作者姓名： | 钱晓丽 陶龙光 刘波 |
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| 作者单位： | 1. 黑龙江科技学院,建筑工程学院,黑龙江,哈尔滨,150027
2. 中国矿业大学,力学与建筑工程学院,北京,100083 |
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| 基金项目： | 黑龙江省教育厅科技基金资助项目(10551272) |
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| 摘 要： | 在桩与土界面处设置Goodman接触单元来模拟桩与土的滑移变形和开裂，建立了单桩在竖向载荷作用下接触面应力和位移的关系公式。用三维有限元的方法，考虑了土体的非线性（Dmcker-Prager模型）力学性能，对模型桩进行了模拟计算分析，详细讨论了双曲线接触面本构关系的初始切向、法向刚度对桩顶位移及地表沉降的影响。对理论分析桩的载荷沉降提供了一种有益的参考。
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| 关 键 词： | Goodman 接触面单元 非线性 切向刚度 法向刚度 |
| 文章编号： | 1008-0562(2007)01-0059-03 |
| 修稿时间： | 2005年1月6日 |
Performance analysis of single pile-soil interface under vertical load |
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| QIAN Xiao-li,TAO Long-guang,LIU Bo.Performance analysis of single pile-soil interface under vertical load[J].Journal of Liaoning Technical University (Natural Science Edition),2007,26(1):59-61. |
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| Authors: | QIAN Xiao-li TAO Long-guang LIU Bo |
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| Institution: | QIAN Xiao-li 1,TAO Long-guang 2,LIU Bo2 |
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| Abstract: | Goodman contact element is proposed for pile-soil interface to represent slippage and pile-soil separation,which can be used to determine the relationship between stress and strain of pile under vertical load.The response of a single pile is analyzed using three-dimensional finite element analysis with the consideration of soil nonlinear behavior(Drucker-Prager model).A hyperbolic constitutive model of interface is put forward and the influence of initial tangent and normal stiffness on the settlement of pile and surface is discussed,which can provide a valuable reference to the theoretical analysis of load-induced pile settlement. |
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| Keywords: | Goodman interface element non-linear shear stiffness normal stiffness |
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