岩土力学2024，Vol.45Issue(8)：2515-2526,12.DOI:10.16285/j.rsm.2024.0157
基于物质点和深度积分耦合模型的滑坡数值分析
Numerical analysis of landslides based on coupling model of material point method and depth integral
摘要
Abstract
The depth integration algorithm simplifies the three-dimensional model of landslide sliding along the surface to a two-dimensional model,enhancing solving efficiency by diminishing the number of unknowns in the governing equation.Material point method(MPM)has the advantages of both grid based method and meshless method,and can avoid mesh distortion when simulating large landslide deformation.A numerical model for landslides has been developed using the depth-integral coupled material point method,with a detailed description of the algorithm's specific process provided.Utilizing the influence domain material point method(IDMPM),two benchmark tests were conducted on typical landslide scenarios:one with a non-inclined,smooth bottom,and the other with an inclined,non-smooth slope.The depth integral coupled material point method model demonstrates high accuracy in predicting key slip parameters,including remote distance,velocity,and depth.In contrast to the conventional material point method,the depth integral coupled material point method model significantly enhances operational efficiency.Furthermore,the research outcomes offer a robust theoretical foundation and timely support for analyzing and predicting the extent of damage in landslide geological disasters,conducting hazard assessments,and facilitating emergency response.关键词
深度积分/物质点法/滑坡/大变形/深度积分耦合物质点法Key words
depth integral/material point method/landslide/large deformation/depth integral coupled material point method分类
土木建筑引用本文复制引用
张伟,晏飞,王兆丰,李邵军..基于物质点和深度积分耦合模型的滑坡数值分析[J].岩土力学,2024,45(8):2515-2526,12.基金项目
国家自然科学基金(No.51879261).This work was supported by the National Natural Science Foundation of China(51879261). （No.51879261）
