| 土坝及砼防渗墙应力与稳定的非线性有限元分析 |
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| 引用本文： | 郑玉琨. 土坝及砼防渗墙应力与稳定的非线性有限元分析[J]. 天津大学学报(自然科学与工程技术版), 1993, 0(5): 57-64 |
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| 作者姓名： | 郑玉琨 |
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| 作者单位： | 副教授水资源与港湾工程系 副教授 |
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| 摘 要： | 应用弹性非线数字模型模拟筑坝地料及地基土的特性，采用逐级加荷的增量法模拟土石坝施工逐步荷的填筑过程，按有限元法求解坝体、地基及砼防渗墙各荷载步的应力应变。并提出应用最大应变等值线图估计最可能滑坡的位置，计算边坡稳定，可克服人为假定滑动面的弊病。计算实例、成果与观测规律符合较好。非线性有限元法成为设计高土石矾的有力依据。
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| 关 键 词： | 有限元 防渗墙 应力 应变 土坝 |
NONLINEAR FEM ANALYSIS ON STRESS AND STABILITY OF EARTH-ROCK DAM AND CONCRETE WATER-TIGHT WALL |
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| Zheng Yukun. NONLINEAR FEM ANALYSIS ON STRESS AND STABILITY OF EARTH-ROCK DAM AND CONCRETE WATER-TIGHT WALL[J]. Journal of Tianjin University(Science and Technology), 1993, 0(5): 57-64 |
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| Authors: | Zheng Yukun |
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| Affiliation: | Dept. of Water Resources & Harbour Eng. |
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| Abstract: | By simulating the properties of embankment material and foundation earth on an elastical nonlinear model and simulating the step-by-step construction process by increment course, this paper estimates strain and stress in dam, foundation and concrate water-tight wall. A maximum shear-strain isogram method is suggested to eastimate sliding location and stability factor of slope. This method avoids the shortcomings due to assuming slip scope.An example indicates that this method is consistent with site observation. The nonlinear FEM can be an effective basis for high earth-rock dam design. |
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| Keywords: | nonlinear infinite element method earth-rock dam concrete water-tight wall strain-stress |
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