| 预应力锚索加固基坑的三维数值分析 |
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| 引用本文： | 卢萌盟,沈俊,曾宪桃. 预应力锚索加固基坑的三维数值分析[J]. 岩土工程学报, 2005, 27(10): 1198-1202 |
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| 作者姓名： | 卢萌盟 沈俊 曾宪桃 |
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| 作者单位： | 河南理工大学；总参工程兵科研三所；河南理工大学 河南焦作454003；河南洛阳471023；河南焦作454003； |
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| 摘 要： | 介绍了程序对锚索的模拟原理,然后针对模型试验,用数值模拟的方法,对比分析了锚固基坑斜墙和直墙在开挖后的水平位移特征和垂直位移特征。计算表明:预应力锚索能够显著减少基坑的水平位移和垂直位移;全长粘结式锚索对松软岩土体的加固效果尤为突出;初始预应力的大小在开挖过程中对基坑的加固效果的影响较为明显。
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| 关 键 词： | 数值分析 基坑 预应力锚索 加固效果 加固机理 |
| 文章编号： | 1000-4548（2005）10-1198-05 |
| 收稿时间： | 2004-11-30 |
| 修稿时间： | 2004-11-30 |
3-D numerical analysis of reinforcement of pre-stressed cable on pit foundation |
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| LU Meng-meng,SHEN Jun,ZENG Xian-tao. 3-D numerical analysis of reinforcement of pre-stressed cable on pit foundation[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(10): 1198-1202 |
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| Authors: | LU Meng-meng SHEN Jun ZENG Xian-tao |
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| Affiliation: | 1.Henan Polytechnic University Jiaozuo 454003.China 2.The Third Scientific Research Institute of the Corps of Engineering of PLA Luoyang 471023 China |
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| Abstract: | The simulative principle of the cable in the program was introduced.Then combining with the model test,the horizontal and vertical displacement trait of the tilted wall and the vertical wall of the pit foundation were compared and analyzed by use of the method of numerical simulation.The numerical results showed that the pre-stressed cable could reduce the horizontal and vertical displacement of the pit foundation remarkably;the reinforcing effect of the full-length bonding cable on the soft rock-soil mass was especially remarkable;the influence of the magnitude of the initial pre-stressing force upon the reinforcing effect on the pit foundation was comparatively evident in the process of the excavation. |
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| Keywords: | numerical analysis pit foundation pre-stressed cable reinforcement effect reinforcement mechanics |
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