| 基于应变软化模型的深基坑土钉加固分析 |
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| 引用本文： | 卢敦华,王星华.基于应变软化模型的深基坑土钉加固分析[J].解放军理工大学学报,2009,10(1):61-66. |
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| 作者姓名： | 卢敦华 王星华 |
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| 作者单位： | 中南大学,土木建筑学院,湖南,长沙,410075
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| 基金项目： | 铁道部科技研究开发计划，铁道部重点项目 |
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| 摘 要： | 为了更加真实地反映岩土体材料的特性,以某深基坑土钉加固工程为背景,建立相应的应变软化模型.分析土钉加固基坑过程中,基坑的变形和塑性区分布情况,以及不同位置和不同开挖过程中土钉的应力变化情况.结果表明:用FLAC3D建立的应变软化模型,能够较好地反映土的特性;该准则下,基坑的变形和破坏形式符合实际情况.土钉在加固过程中,轴力变化呈现非线性特征,FLAC3D能够较好地进行反映,能为工程实践提供指导.
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| 关 键 词： | 应变软化模型 变形 应力变化 塑性区 |
Soil nail reinforcement in deep foundation based on strain softening model |
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| LU Dun-hua and WANG Xing-hua.Soil nail reinforcement in deep foundation based on strain softening model[J].Journal of PLA University of Science and Technology(Natural Science Edition),2009,10(1):61-66. |
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| Authors: | LU Dun-hua and WANG Xing-hua |
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| Institution: | Department of Civil Engineering;Central South University;Changsha 410075;China |
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| Abstract: | In order to reflect the characteristics of geotechnical material more exactly,the strain-softening model was built based on the engineering background of one deep foundation reinforced by soil nail.The deformation of the foundation and its plastic zone distribution were analyzed,as well as the axial stress distribution of the soil nail at different places during different excavation phases.The analysis results show that the strain-softening model built by FLAC3D can reflect the characteristics of the soil m... |
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| Keywords: | FLAC3D |
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