题名 | 降雨和冻融作用下边坡破坏的三维正则化高效无网格模拟研究; Three dimensional efficient regularized meshfree simulations of slope failure induced by rainfall and freeze-thaw processes |
作者 | 孙明 |
答辩日期 | 2015 ; 2015 |
导师 | 王东东 |
关键词 | 三维无网格法 边坡 降雨 冻融 耦合作用 损伤破坏 正则化二次应变光滑 Three dimensional meshfree method slope rainfall freezing and thawing coupling damage and failure regularized two-level strain smoothing formulation |
英文摘要 | 边坡失稳破坏是一类常见的自然灾害形式。边坡破坏诱发的因素很多,其中尤以降雨引发的滑坡灾害最为突出。同时,随着西部大开发的深入,寒冷地区冻融作用导致的边坡破坏也日益受到重视。然而,边坡失稳涉及到土体骨架、水(冰)、空气等多相耦合即相互作用,是一个复杂的非饱和土体大变形损伤破坏过程,需要借助精确高效的数值方法进行分析、预测和预防。本文利用无网格法仅采用节点离散、适于大变形分析的优点,着重研究了降雨及冻融影响下边坡破坏的三维高效无网格数值模拟方法。 本文首先针对降雨诱发边坡破坏问题,从守恒定律出发讨论了边坡非饱和土体的多相耦合控制方程及其等效积分弱形式。为了提高计算效率和解决边坡损伤破坏中由应变软...; Slope failure is one of the most frequently occurred natural disasters. Among many factors causing slope failure, rainfall is widely recognized as a major driving force. Meanwhile, with the rapid development in China western regions, the slope failure caused by the freeze-thaw processes of the water in the slope also become an important issue that deserves thorough investigation. However, the slop...; 学位:工学硕士; 院系专业:建筑与土木工程学院_工程力学; 学号:25320121151703 |
语种 | zh_CN |
出处 | http://210.34.4.13:8080/lunwen/detail.asp?serial=50901 |
内容类型 | 学位论文 |
源URL | [http://dspace.xmu.edu.cn/handle/2288/96300] |
专题 | 建筑土木-学位论文 |
推荐引用方式 GB/T 7714 | 孙明. 降雨和冻融作用下边坡破坏的三维正则化高效无网格模拟研究, Three dimensional efficient regularized meshfree simulations of slope failure induced by rainfall and freeze-thaw processes[D]. 2015, 2015. |
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