| 对岩土工程有限元强度折减法的几点思考 |
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| 引用本文： | 梁庆国,李德武.对岩土工程有限元强度折减法的几点思考[J].岩土力学,2008,29(11):3053-3058. |
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| 作者姓名： | 梁庆国 李德武 |
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| 作者单位： | 兰州交通大学,土木工程学院,兰州,730070 |
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| 基金项目： | 兰州交通大学"青蓝"人才工程项目
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国家科技部科研院所社会公益研究专项基金
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| 摘 要： | 有限元强度折减法是岩土工程极限分析有限元法中研究和应用较多的一种.近年来获得了快速发展,且成果丰硕,初步显示出在岩土工程中的可行性、优越性和实用性.在充分肯定其优势及特点的同时,从安全系数定义、摩尔-库仑准则的应用条件、计算参数选取等方面,探讨了有限元强度折减法的若干问题.认为应注意该方法的使用条件和计算参数选取;研究以变形控制设计为主的岩土结构安全系数及稳定性,与传统极限平衡方法结合互补,研发多种方法和用途的专业计算软件是较好的发展方向.
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| 关 键 词： | 岩土工程 有限元强度折减法 安全系数 摩尔-库仑准则 剪切破坏 |
| 收稿时间： | 2007-12-28 |
Discussion on strength reduction FEM in geotechnical engineering |
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| LIANG Qing-guo,LI De-wu.Discussion on strength reduction FEM in geotechnical engineering[J].Rock and Soil Mechanics,2008,29(11):3053-3058. |
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| Authors: | LIANG Qing-guo LI De-wu |
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| Institution: | School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China |
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| Abstract: | The strength reduction FEM (SRFEM) is the most popular method in geotechnical limit analysis FEM. It has been studied and applied in recent years quickly; and significant achievements have been obtained and its feasibility, superiority and practicability in geotechnical engineering have been proved. Several problems about SRFEM are discussed such as the definition of safety factor, utility condition of Mohr-Coulomb criterion and access to calculation parameters after the adequate praise and affirmation of i... |
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| Keywords: | geotechnical engineering strength reduction FEM safety factor Mohr-Coulomb criterion shear failure |
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