| 某高层建筑基坑塌方分析及极限分析有限元法模拟 |
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| 引用本文： | 张黎明,王在泉,刘 琼,王建新. 某高层建筑基坑塌方分析及极限分析有限元法模拟[J]. 岩土力学, 2006, 27(Z1): 51-54 |
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| 作者姓名： | 张黎明 王在泉 刘 琼 王建新 |
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| 作者单位： | 青岛理工大学 理学院，青岛 266033 |
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| 基金项目： | 山东省自然科学基金资助项目（No.Y2005-A03） |
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| 摘 要： | 某高层建筑基坑在施工过程中由于没有严格按照设计施工、基坑边坡土层没有完全封闭、边坡顶部和底部裸露，致使雨水从坡顶排水沟下部渗到边坡面层内，经雨水浸泡后的土体抗剪强度降低，大量土块失稳落下，喷射混凝土面层内形成了大片空洞，锚索的预应力损失，最终导致整个面层坠下，造成塌方事故。采用二分法改进的极限分析有限元法对该基坑边坡进行模拟，得到了基坑边坡的安全系数和滑动面，用二分法对土体强度参数进行折减，提高了极限分析有限元法的求解效率。
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| 关 键 词： | 基坑 塌方 二分法 极限分析有限元法 |
| 收稿时间： | 2006-05-27 |
Analysis of foundation pit landslide of a tall builing and application of limit analysis by finite element method |
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| ZHANG Li-ming,WANG Zai-quan,LIU Qiong,WANG Jian-xin. Analysis of foundation pit landslide of a tall builing and application of limit analysis by finite element method[J]. Rock and Soil Mechanics, 2006, 27(Z1): 51-54 |
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| Authors: | ZHANG Li-ming WANG Zai-quan LIU Qiong WANG Jian-xin |
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| Affiliation: | College of Science, Qingdao Technological University, Qingdao 266033, China |
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| Abstract: | The foundation pit landslide of a tall building is analyzed. The waterproof measure of supporting project has deficient. The top and foot of the foundation pit slope is not closed by concrete coverage. The rainfall enters the soil under the coverage. So the soil is scoured out. The prestressing force of the bolt lost. At last, the foundation pit landslide occurred. Limit analysis by finite element method and dichotomy are combined with together to used in foundation pit slope. Based on the mechanism of limit analysis, latent slip surface and safety factors are obtained. |
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| Keywords: | foundation pit landslide dichotomy limit analysis by finite element method |
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