| 修正的摩尔-库仑准则在重力坝深层抗滑稳定中的应用 |
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| 引用本文： | 周伟,杨利福,常晓林,马刚,涂承义.修正的摩尔-库仑准则在重力坝深层抗滑稳定中的应用[J].武汉大学学报(工学版),2012,45(3):273-276,281. |
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| 作者姓名： | 周伟 杨利福 常晓林 马刚 涂承义 |
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| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北武汉,430072
2. 华东勘测设计研究院,浙江杭州,310014 |
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| 摘 要： | 针对修正后的Mohr-Coulomb准则采用基于Euler向后积分的自适应子增量本构积分算法推导得到的一致性切线刚度矩阵,以ABAQUS软件为平台,编制UMAT本构程序.进行了平面应变条件下单轴受压的数值验证后,用上述程序以强度储备系数法来验证了修正后的Mohr-Coulomb准则在重力坝抗滑稳定中的可靠性,结果表明编写的修正后的Mohr-Coulomb模型能够有效地反映重力坝深层抗滑破坏的特性,结果偏安全.
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| 关 键 词： | 修正Mohr-Coulomb准则 重力坝 抗滑稳定 UMAT |
Application of modified Mohr-Coulomb criterion to deep anti-sliding stability analysis of gravity dam |
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| ZHOU Wei,YANG Lifu,CHANG Xiaolin,MA Gang,TU Chengyi.Application of modified Mohr-Coulomb criterion to deep anti-sliding stability analysis of gravity dam[J].Engineering Journal of Wuhan University,2012,45(3):273-276,281. |
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| Authors: | ZHOU Wei YANG Lifu CHANG Xiaolin MA Gang TU Chengyi |
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| Affiliation: | 1.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China;2.Eest China Investigation and Design Institute,Hangzhou 310014,China) |
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| Abstract: | Based on Euler backward integration method,an integration algorithm of constitutive equation is suggested for adaptive sub-stepping schemes;and the consistent tangent matrices of modified Mohr-Coulomb criterion are derived.The UMAT subroutine of the modified Mohr-Coulomb model is developed in ABAQUS.After a uniaxial compression test,the simulation of the deep anti-sliding stability analysis of gravity dam is performed using the mentioned subroutine by strength reserve coefficient method.The simulation results show that the modified Mohr-Coulomb criterion is reliable and could effectively depict the deep sliding failure characteristics of gravity dam;the result is inclined to safe. |
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| Keywords: | modified Mohr-Coulomb criterion gravity dam anti-sliding stability UMAT |
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