| 深基坑超挖施工围护结构变形分析 |
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| 引用本文： | 谢秀栋,王燕. 深基坑超挖施工围护结构变形分析[J]. 岩土工程技术, 2011, 25(6): 300-303. DOI: 10.3969/j.issn.1007-2993.2011.06.007 |
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| 作者姓名： | 谢秀栋 王燕 |
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| 作者单位： | 福州大学土木工程学院,福建福州,350108 |
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| 基金项目： | 福建省自然科学基金资助项目，福州大学科技发展基金赏助项目 |
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| 摘 要： | 在处于具有流变性土层的深基坑工程施工过程中，时有发生超挖未能及时设置支撑的现象，由于土的蠕变特性，导致围护结构变形急剧增大。通过弹粘塑性本构模型的二次开发，对软土地区深基坑施工过程中的正常开挖及时支撑和超挖两种情况进行数值模拟，分析深基坑围护结构变形随时间的变化规律及深基坑的安全性状，以达到有效控制基坑变形和保护周围环境的目的。
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| 关 键 词： | 基坑 软土蠕变 围护结构变形 数值模拟 |
Analysis on Deformation of Retaining Structures of Over-excavation in Foundation Pit |
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| Xie Xiudong,Wang Yan. Analysis on Deformation of Retaining Structures of Over-excavation in Foundation Pit[J]. Geotechnical Engineering Technique, 2011, 25(6): 300-303. DOI: 10.3969/j.issn.1007-2993.2011.06.007 |
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| Authors: | Xie Xiudong Wang Yan |
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| Affiliation: | Xie Xiudong WangYan (College of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China) |
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| Abstract: | During the excavation of foundation pit in rheological soil layer, the phenomena of over-excavation and support setting not timely occur frequently, and the characteristics of soft-soil creep,the deformation of retaining structures is increase sharply. With the secondary development program of the elastic-viscose-plastic constructive model, simulate the conditions of normal construction and overexcavation of foundation pit in Soft clay area, analyze the time change regulation of retaining structures and safety state of foundation pit, in order to achieve effective control of the deformation and protect the buildings adjacent to foundation pit. |
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| Keywords: | foundation pit soft-soil creep deformation of retaining structures numerical simulation |
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