| 考虑卸载扰动与土流变特性的基坑性状的分析 |
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| 引用本文： | 覃海婴,杨晓贞.考虑卸载扰动与土流变特性的基坑性状的分析[J].福州大学学报(自然科学版),2001,29(1):78-82. |
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| 作者姓名： | 覃海婴 杨晓贞 |
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| 作者单位： | 福州大学土木建筑工程学院, |
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| 摘 要： | 从工程实际的需要和目前基坑的研究现状出发 ,考虑应力路径对软粘土应力与应变关系的影响 ,并在粘弹塑性本构模型的基础上编制二维有限元分析程序 .利用有限元程序对一组开挖时间与间歇时间不同的基坑工程进行分析 ,得到支护体系变形的时间效应及一些规律 .最后分析工程实例 ,并与实测值进行比较 .
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| 关 键 词： | 土 深基坑 卸载 粘弹塑性 |
| 文章编号： | 1000-2243(2001)01-0078-05 |
| 修稿时间： | 2000年5月24日 |
Analysis of foundation pit considering unload history and viscoplastic model |
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| QIN Hai-ying,YANG Xiao-zhen.Analysis of foundation pit considering unload history and viscoplastic model[J].Journal of Fuzhou University(Natural Science Edition),2001,29(1):78-82. |
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| Authors: | QIN Hai-ying YANG Xiao-zhen |
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| Institution: | (College of Civil and Engineering Architectures, Fuzhou University, Fuzhou, Fujian 350002, China) |
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| Abstract: | Based on the needs of engineering and the present research of deep foundation pit,this paper works out a FFM program which concerns with soil elasto-viscoplatic model and influence of stress history. A set of excavation case in different condition is calculated and analyzed. It shows that the different time of excavation and intermission will distinguish the results. By comparing the calculation with site inspection,time-dependent regularity is established. |
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| Keywords: | land foundation pit unloading history viscoplastic model |
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