| 三维边坡稳定弹塑性有限元分析与评价 |
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| 引用本文： | 方建瑞,许志雄,庄晓莹.三维边坡稳定弹塑性有限元分析与评价[J].岩土力学,2008,29(10):2667-2672. |
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| 作者姓名： | 方建瑞 许志雄 庄晓莹 |
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| 作者单位： | 1.同济大学 土木工程学院，上海 200092；2.福建省第一电力建设公司，福州 350003 |
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| 摘 要： | 在边坡稳定分析有限元强度折减法的基础上，将二维分析推广到三维分析，研究了其安全系数的定义方式、屈服准则与失稳破坏标准等。算例分析表明，三维有限元分析比传统三维极限平衡方法和二维有限元分析更加符合实际，可以较好地模拟解决实际工程的计算问题。探讨了影响二维与三维分析结果的一些因素，通过分析得出结论：相同模型中选取Mohr内切圆屈服准则比选取外接圆屈服准则的计算结果偏于保守；三维边坡的侧向边界约束条件和长高比对计算结果影响较大，侧向边界全部约束时安全系数将大大增加，而安全系数随着长高比的增加逐渐减小。
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| 关 键 词： | 三维边坡 弹塑性有限元 强度折减法 安全系数 |
| 收稿时间： | 2006-05-22 |
Appraisal and analysis of three-dimensional slope stability based on elastoplastic FEM |
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| FANG Jian-rui,XU Zhi-xiong,ZHUANG Xiao-ying.Appraisal and analysis of three-dimensional slope stability based on elastoplastic FEM[J].Rock and Soil Mechanics,2008,29(10):2667-2672. |
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| Authors: | FANG Jian-rui XU Zhi-xiong ZHUANG Xiao-ying |
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| Institution: | 1.College of Civil Engineering, Tongji University, Shanghai 200092, China; 2. Fujian No.1 Electric Power Construction Co., Fuzhou 350003, China |
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| Abstract: | Based on the strength reduction method in slope stability analysis,two-dimensional analysis is promoted to three-dimensional slope analysis;and its definition way of safety factor,yield rule and destruction criterion are researched.The three-dimensional finite element analysis conform to the reality more than traditional three-dimensional limit equilibrium method and two-dimensional finite element analysis,and it may simulate the solution of practical project well by example.Also,some influential factors in... |
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| Keywords: | three-dimensional slope elastoplastic finite elements strength reduction method safety factor |
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