| 土钉支护现场测试及三维数值模拟分析 |
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| 引用本文： | 李志刚,秦四清,张冰峰.土钉支护现场测试及三维数值模拟分析[J].工程地质学报(英文版),2004,12(1):69-73. |
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| 作者姓名： | 李志刚 秦四清 张冰峰 |
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| 作者单位： | 中国科学院地质与地球物理研究所,北京,100029 |
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| 摘 要： | 在进行土钉轴力和边坡位移测试的基础上 ,进行了土钉支护的三维数值模拟研究 ,对边坡位移、土钉轴力、塑性区分布等分别作了较为深入的探讨 ,认识到土钉与土体相互作用形成了一个完整的支护体系 ;基坑失稳破坏并非传统意义上的土体和土钉的破坏 ,而是土钉支护体系的整体性破坏 ;土钉支护体系的形成正是通过土钉的分担作用、应力传递与扩散作用来实现的 ,这是土钉支护作用的实质.
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| 关 键 词： | 土钉支护体系 现场测试三维模拟 位移时步变化 轴力 塑性变形 |
| 文章编号： | 1004-9665/2004/12(01)-0069-05 |
| 收稿时间： | 2003-03-27 |
| 修稿时间： | 2003年3月27日 |
IN SITU TEST AND THREE -DIMENSIONAL SIMULATION ANALYSIS OF SOIL NAILING SUPPORT |
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| LI Zhigang,QIN Siqing,ZHANG Bingfeng.IN SITU TEST AND THREE -DIMENSIONAL SIMULATION ANALYSIS OF SOIL NAILING SUPPORT[J].Journal of Engineering Geology,2004,12(1):69-73. |
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| Authors: | LI Zhigang QIN Siqing ZHANG Bingfeng |
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| Institution: | Institute of Geology and Geophysics, ChineseAcademy of Sciences| Beijing 100029 |
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| Abstract: | Based on soil nail axial force and slope displacement testing, a 3-D soil nailing support numerical model is constructed and the slope displacement, soil nail axial force, plastic displacement are deeply discussed in this paper.Most meaningful conclusions are drawn: soil nail and soil mass form a whole supporting system through their interaction; foundation pit in stability is not due to soil mass failure or soil nail failure, but is due to the instability of whole supporting system; the supporting system is formed by soil nail bearing partial force and stress transferring and diffusing. These are the essence of the soil nail support. |
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| Keywords: | Soil nailing support system In situ test Three-dimensional simulation Axial force Plastic displacement |
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