用有限元强度折减法评价海底斜坡稳定性

摘要

The paper studies plastic strain,equivalent plastic strain and plastic zones development conditions of land slope and ocean slope with similar finite element models from three instability data by applying strength reduction FEM on the basis of ABAQUS,and obtains quantitative re-search basis of ocean slope instability mechanism and stability evaluation,which has provide some concepts for ocean slope instability mechanism and submarine geology disaster risk evaluation as well.%采用基于 ABAQUS 的有限元强度折减法从三个失稳判据方面对相同有限元模型的陆地斜坡和海底斜坡的塑性应变、等效塑性应变、塑性区发展情况进行了研究，得出了海底斜坡失稳机理和稳定性评价的定量研究依据，为海底斜坡失稳机理和海底地质灾害风险评价提供了研究思路。