| 基于能量定义的边坡临界滑动场方法 |
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| 引用本文： | 李亮,褚雪松.基于能量定义的边坡临界滑动场方法[J].岩土工程技术,2008,22(6):277-280. |
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| 作者姓名： | 李亮 褚雪松 |
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| 作者单位： | 中国水利水电科学研究院岩土工程研究所,北京,100044 |
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| 基金项目： | 中国博士后科学基金资助 |
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| 摘 要： | 边坡临界滑动场法是最近发展起来的边坡稳定性计算方法，通过定义外力功与内能耗散之差为剩余功。基于能量定义的边坡临界滑动场模拟的主要思路为：给定一个安全系数，寻找最大剩余功对应的滑动面，变换安全系数直到所得最大剩余功为零，其对应的滑动面即为临界滑动面，相应的安全系数即为最小安全系数。通过两个典型土坡算例分析证明了该方法的有效性，与传统的临界滑动场相比，该新方法不再需要条间力假定，计算简单。
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| 关 键 词： | 临界滑动场 边坡稳定 虚功原理 优化算法 |
Critical Slip Field Method For Slopes in Terms of Energy |
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| Li Liang,Chu Xuesong.Critical Slip Field Method For Slopes in Terms of Energy[J].Geotechnical Engineering Technique,2008,22(6):277-280. |
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| Authors: | Li Liang Chu Xuesong |
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| Institution: | Li Liang ,Chu Xuesong (Department of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, Beijing 100044 China) |
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| Abstract: | The method of critical slip field for slopes is newly developed by Prof. Zhu Dayong. The unbalanced work is defined as the difference of virtual work of loadings to inner energy dissipation and the new method of critical slip field in terms of energy is presented. This new method includes two calculating steps, i.e. the determination of slip surface yielding the maximum unbalanced work with regard to given factor of safety and the determination of minimum factor of safety, under which the maximum unbalanced work is zero. Two typical soil slopes are analyzed by using this new method and the comparison of results proved its validity. This new method is characterized by simplicity of calculation and the avoidance of assumption on inter-slice forces. |
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| Keywords: | critical slip field slope stability virtual work-energy equation optimization algorithm |
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