| 全长粘结式锚杆拉拔试验的数值实现 |
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| 引用本文： | 舒谷生,彭文祥,何忠明.全长粘结式锚杆拉拔试验的数值实现[J].科技导报(北京),2009,27(12). |
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| 作者姓名： | 舒谷生 彭文祥 何忠明 |
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| 作者单位： | 舒谷生,SHU Gusheng(湖南城市学院土木工程学院力学教研室,湖南,益阳,413000);彭文祥,PENG Wenxiang(中南大学地学与环境工程学院,长沙,410083);何忠明,HE Zhongming(长沙理工大学交通运输工程学院,长沙,410004)
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| 摘 要： | 为实现土锚相互作用的数值模拟,研究全长粘结式锚杆拉拔工况下的受力变形特征,利用FLAC 3D建立数值模型,分析锚杆受力特征、土体响应,以及拉拨性能的影响因素.结果表明:①接触面单元能较好地模拟土锚相互作用特征;②锚杆拉拔过程的峰值位移和极限拉拔力均与锚杆长度呈显著线性关系;③锚杆极限拉拔力与锚杆直径同样呈线性关系;④锚杆拉拔过程中,周围土体受到一定影响,其影响范围为:深度2L(L为锚杆长度),水平约1.5L.
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| 关 键 词： | 全长粘结式锚杆 拉拔性能 数值分析 变形特征 |
Numerical Simulation of the Pullout Test of Wholly Grouted Cable |
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| SHU Gusheng,PENG Wenxiang,HE Zhongming.Numerical Simulation of the Pullout Test of Wholly Grouted Cable[J].Science & Technology Review,2009,27(12). |
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| Authors: | SHU Gusheng PENG Wenxiang HE Zhongming |
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| Institution: | SHU Gusheng1,PENG Wenxiang2,HE Zhongming3 1. Department of Mechanics,Department of Civil Engineering Hunan City University,Yiyang 413000,Hunan Provience,China 2. School of Geoscience , Environmental Engineering,Central South University,Changsha 410083,China 3. School of Traffic , Transportation Engineering,Changsha University of Science & Technology,Changsha 410004,China |
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| Abstract: | A calculation model is built based on FLAG 3D for the numerical simulation of interaction between soil and cable. The mechanical deformation characteristics of soil mass and wholly grouted cable are studied under the pull-out condition, and the mechanical behaviors of cable, the response of soil mass, and the influence factors for pull-out performance are analyzed. It is shown that, (1) the interface element can do well in simulating the interaction between soil and cable; (2) the peak tensile force and the... |
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| Keywords: | wholly grouted cable pull-out characteristic numerical analysis deformation characteristic |
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