| 强夯接触力和接触位移的碰撞分析求解 |
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| 引用本文： | 蒋鹏,李荣强,孔德坊.强夯接触力和接触位移的碰撞分析求解[J].力学学报,2002,10(1):108-112. |
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| 作者姓名： | 蒋鹏 李荣强 孔德坊 |
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| 作者单位： | 1. 深圳市勘察研究院,深圳518026;
2. 成都理工学院工程地质研究所,成都610059 |
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| 摘 要： | 首次采用大变形动力接触有限元法分析了强夯对地基土的冲击碰撞过程 ,锤底接触力和夯沉量过程中直接求得 ,且能模拟夯锤与地基土的多次接触分离过程 ,适应于各种复杂的地基土条件和夯击能条件 ,克服了现有其它方法的不足和缺陷。文章最后给出了系列工程算例 ,验证了本文计算模型的合理型
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| 关 键 词： | 强夯 有限元法 大变形 动力接触 |
| 收稿时间： | 2000-01-12 |
| 修稿时间： | 2002-01-20 |
ACULATION OF CONTACT FORCE AND CONTACT DISPLACEMENT DURING DYNAMIC COMPACTION BY COLLISION ANALYSES |
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| JIANG Peng,LI Rongqiang,KONG Defang.ACULATION OF CONTACT FORCE AND CONTACT DISPLACEMENT DURING DYNAMIC COMPACTION BY COLLISION ANALYSES[J].chinese journal of theoretical and applied mechanics,2002,10(1):108-112. |
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| Authors: | JIANG Peng LI Rongqiang KONG Defang |
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| Institution: | 1. Shenzhen Institute for Exploration &|Design,Shenzhen 518026;
2. Chendu University of Technology, Chengdu 610059 |
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| Abstract: | By set up of an equation of dynamic contact between hammer and foundation soil, in this paper a finite element model for dynamic compactionk′s impact and collision is constructed. Contact force and contact displacement of hammer is found in the calculation. By using UL method, a large deformation dynamic equilibrant equation of the finite element system of dynamic compaction is formulated in this paper. A geometric nonlinear influence taken into consideration in analysis. Erosion element is adopted in the program for decreasing the grid instability. The program considers the influence of the weight of hammer and can simulate the departing phenomenon between hammer and soil. At the end of this paper, some engineering examples are discussed to test and verify this program. |
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| Keywords: | Dynamic compaction Finite element method Large deformation Dynamic contaction |
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