| 复合土钉墙支护FLAC~(3D)数值模拟与实测结果对比 |
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| 引用本文： | 张尚根.复合土钉墙支护FLAC~(3D)数值模拟与实测结果对比[J].岩土力学,2008,29(Z1):129-135. |
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| 作者姓名： | 张尚根 |
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| 作者单位： | 解放军理工大学,国防与人防工程系,江苏,南京,210007 |
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| 摘 要： | 针对深基坑复合土钉墙支护的特点,运用FLAC3D软件进行深基坑开挖与土钉支护过程的数值模拟,计算中采用摩尔-库仑弹塑性模型,接触面运用接触单元来模拟土体与土钉之间的相互作用.通过计算得到了基坑不同开挖及土钉支护过程中土钉轴力沿钉长分布、墙后土体深层水平位移、周围地表沉降、坑底隆起及潜在滑动面等变化情况,并与实测结果比较发现二者吻合较好,计算结果对工程施工和设计具有一定的指导意义.同时说明所采用的FLAC3D计算模型和分析方法是可靠的,能够满足工程的精度要求,能够较好地运用于实际工程中的分析与预测.
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| 关 键 词： | 深开挖 复合土钉支护 接触单元 实测值 对比分析 |
| 收稿时间： | 2008-07-25 |
Comparative analysis of FLAC~(3D) numerical simulations and field test of composite cement-soil nailing wall retaining |
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| ZHANG Shang-gen.Comparative analysis of FLAC~(3D) numerical simulations and field test of composite cement-soil nailing wall retaining[J].Rock and Soil Mechanics,2008,29(Z1):129-135. |
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| Authors: | ZHANG Shang-gen |
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| Institution: | Department of national and Civil Defense Engineering, PLA University of Science and Technology, Nanjing 210007, China |
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| Abstract: | In accordance with composite soil nailing technology for deep excavation,the FLAC3D is used to simulate the process of construction by composite cement-soil nailing wall.During the simulation Mohr-Coulomb model is used and contact elements are applied to the interfaces between the soil nailing and soil.This simulation offers the axial force of soil nailing along nails length distribution,the horizontal displacements of soil,the settlements of ground,the uplifts in the bottom of the pit and the potential sli... |
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| Keywords: | FLAC3D |
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