| 对称约束对基坑开挖三维有限元分析的影响 |
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| 引用本文： | 任泽民,雷礼钢,熊春宝. 对称约束对基坑开挖三维有限元分析的影响[J]. 低温建筑技术, 2009, 31(1): 80-82 |
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| 作者姓名： | 任泽民 雷礼钢 熊春宝 |
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| 作者单位： | 河北工业大学,天津,300132;美国密歇根州立大学,USA兰辛东,MI,48823;天津大学建工学院,天津,300072 |
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| 摘 要： | 在三维有限元分析中，由于单元数量和自由度的数量巨大，为了简化计算和提高计算精度，有必要采用诸如使用对称约束等之类的简化模型。但实际研究中我们所依据的仅仅是理论上的对称约束进行简化，并没有研究对称约束对三维有限元分析的影响。因此，本文采用三维有限元分析方法模拟分析天津软土地基上某深基坑工程的开挖过程，研究了对称约束对支护体系内力和变形的影响，计算结果和实测结果比较的一致性，说明利用对称约束简化计算模型的可行性。
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| 关 键 词： | 对称约束 三维有限元分析 计算模拟 |
THE EFFECT OF SYMMETRIC CONSTRAINS ON 3D FEA IN FOUNDATION PIT |
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| REN Ze-min,LEI Li-gang,XIONG Chun-bao. THE EFFECT OF SYMMETRIC CONSTRAINS ON 3D FEA IN FOUNDATION PIT[J]. Low Temperature Architecture Technology, 2009, 31(1): 80-82 |
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| Authors: | REN Ze-min LEI Li-gang XIONG Chun-bao |
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| Affiliation: | 1.Hebei University of Technology;Tianjin 300132;China;2.Michigan State University;East Lansing;MI 48823;USA;3.School of Civil Engineering;Tianjin University;Tianjin 300072;China. |
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| Abstract: | In the three dimensional finite element analysis(3D FEA),thousands of elements and equations are used to simulate construction and excavation in foundation pit.Sometimes simplified models,such as symmetric constrains,are employed in order to reduce the mounts of elements and to obtain better evaluation,for example,symmetric constrains are used.However,the suitability of this method is not thoroughly considered before,and further research is required in 3D FEA,especially on soft ground.Here the theoretical r... |
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| Keywords: | symmetric constrains 3D FEA computational simulation |
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