| 考虑孔隙水压力的土坡稳定性的有限元上限分析 |
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| 引用本文： | 王均星,李泽.考虑孔隙水压力的土坡稳定性的有限元上限分析[J].岩土力学,2007,28(2):213-218. |
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| 作者姓名： | 王均星 李泽 |
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| 作者单位： | 武汉大学 水资源与水电工程科学国家重点实验室，武汉 430072 |
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| 摘 要： | 基于塑性极限分析的上限定理，考虑孔隙水压力的影响，以结点速度为未知量，根据塑性流动约束条件、速度间断约束条件、速度边界约束条件以及由外功功率与内功功率相等条件得到的目标函数，建立了求解孔隙水压力条件下土坡稳定性的有限元塑性极限分析线性规划数学模型；可求得边坡安全系数的上限值及相应的机动容许位移场；最后对2个经典算例进行了分析，验证了提出方法和程序是正确可行的。
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| 关 键 词： | 塑性极限分析 上限法 孔隙水压力 边坡稳定 线性规划 |
| 文章编号： | 1000-7598-（2007）02-0213-06 |
| 收稿时间： | 2005-10-11 |
| 修稿时间： | 2005-10-11 |
Upper bound analysis of stability of soil slope subjected to pore water pressure using finite elements |
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| WANG Jun-xing,LI Ze.Upper bound analysis of stability of soil slope subjected to pore water pressure using finite elements[J].Rock and Soil Mechanics,2007,28(2):213-218. |
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| Authors: | WANG Jun-xing LI Ze |
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| Institution: | State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China |
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| Abstract: | Based on the theory of upper bound limit analysis,the velocities of the nodes are regarded as unknown quantity,with the conditions of flow rule,velocity discontinuity,velocity boundary,the energy-work balance equation,the linear programming model of stability of slope subjected to pore water pressure are established.The pore water pressure is considered as an external force.Then the upper limit value of the safety coefficients of slopes,and the corresponding kinematically admissible velocity fields are obtained.Finally,using the proposed methodt,he stability of two classical soil slopes are calculated;and the results demonstrate the correctness of the method. |
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| Keywords: | plastic limit analysis upper bound pore water pressure slope stability linear programming |
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