| NUMERICAL ANALYSIS OF THE MECHANICS OF SOIL REINFORCEMENT |
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| 作者姓名： | Weifeng SONG Lihua CHEN Xiuping LIU |
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| 作者单位： | Weifeng SONG1，Lihua CHEN2 and Xiuping LIU3 1 PhD candidate，senior engineer，College of Water and Soil Conservation，Beijing Forestry University; Key Laboratory of Soil and Water Conservation and Combating Desertification，Ministry of Education，Beijing 100083，China 2 Prof.，Doctor，College of Water and Soil Conservation，Beijing Forestry University; Key Laboratory of Soil and Water Conservation and Combating Desertification，Ministry of Education，Beijing 100083，China 3 Master，College of Water and Soil Conservation，Beijing Forestry University; Key Laboratory of Soil and Water Conservation and Combating Desertification，Ministry of Education，Beijing 100083，China |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 1 INTRODUCTION China is rich in mountains. The mountainous area occupies 69% of the total land of the country. Thus, landslides frequently occur in the mountain areas of China. Landslides originating in subsurface soils are typical, and constitute approxi…
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| 关 键 词： | 土壤强化 数值分析 土壤侵蚀 土壤应力 |
| 收稿时间： | 2005-04 |
| 修稿时间： | 2005-12 |
NUMERICAL ANALYSIS OF THE MECHANICS OF SOIL REINFORCEMENT |
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| Weifeng SONG Lihua CHEN Xiuping LIU.NUMERICAL ANALYSIS OF THE MECHANICS OF SOIL REINFORCEMENT[J].International Journal of Sediment Research,2006,21(3):230-237. |
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| Authors: | Weifeng SONG Lihua CHEN Xiuping LIU |
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| Abstract: | Roots affect the soil stress and strain and contribute to soil reinforcement. An analysis of stress and strain in the root-soil composite is presented which combines roots, soils, and an interface element by using the Duncan-Chang E- model and a nonlinear-interface-element model. In this research, a finite element numerical analysis method was applied to simulate the stress field resulting in a composite of Pinus tabulaeformis roots and soils. Results show that roots can transmit the stress from surface soils to deep soils, and can reduce soil stress within the surface soil layer; results also show that the effect of soil reinforcement by roots is limited to surface soils. The Slope Safety Index of a pine slope becomes 10% higher than that of a natural slope, indicating that roots have a significant effect on soil reinforcement. |
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| Keywords: | Pinus tabulaeformis Root system Root-soil composite Stress Numerical analysis Soil reinforcement |
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