| 考虑大变形的静力压桩数值模拟 |
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| 引用本文： | 戚科骏,张云军,王旭东,宰金珉,常银生.考虑大变形的静力压桩数值模拟[J].岩土力学,2005,26(Z1):129-132. |
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| 作者姓名： | 戚科骏 张云军 王旭东 宰金珉 常银生 |
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| 作者单位： | 南京工业大学 土木学院，南京 210009 |
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| 基金项目： | 江苏省六大人才高峰首批资助项目(No.BK2003418，No.04KJB560048)，江苏青年科技创新人才基金(No.BK2004420)。 |
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| 摘 要： | 静力压桩过程是一种稳态贯入过程。该过程使得桩周附近区域的土体产生较大挤压作用，并出现了较大变形，因而基于传统小变形的有限元分析与真实的贯入过程有着较大的误差。基于更新的拉格朗日列式法，分析压桩时产生的大变形，引入桩-土界面间的接触作用，桩周土体采用Mohr-Coulomb模型，并运用有限元方法进行数值分析，较好地实现了静力压桩过程的数值模拟。
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| 关 键 词： | 大变形 接触 静力压桩 Mohr-Coulomb模型 数值模拟 |
| 收稿时间： | 2005-01-21 |
Numerical simulation of static piling consindering large deformation |
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| QI Ke-jun,ZHANG Yun-jun,WANG Xu-dong,ZAI Jin-min,CHANG Yin-sheng.Numerical simulation of static piling consindering large deformation[J].Rock and Soil Mechanics,2005,26(Z1):129-132. |
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| Authors: | QI Ke-jun ZHANG Yun-jun WANG Xu-dong ZAI Jin-min CHANG Yin-sheng |
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| Institution: | College of Civil Engineering, Nanjing University of Technology, Nanjing 210009, China |
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| Abstract: | Static piling is the procedure of steady penetration which leads to great compression and large deformation of the soil adjacent to the pile. And it is reasonable that there are errors between the real penetration and the finite element analysis according to traditional small deformation. so new finite element method used to analyze large deformation during piling is presented. The method is based on updated Lagrangian formation (ULF), considering the contract between pile and soil, regarding soil as the Mohr-Coulomb model. The numerical results show that the method can realize the numerical simulation of static piling. |
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| Keywords: | large deformation contract static piling Mohr-Coulomb model numerical simulation |
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