计算力学学报Issue(5)：596-602,7.DOI:10.7511/jslx201405009
含石量对土石混合体压桩承载力影响的离散元分析
Influences of rock content on bearing capability of soil-rock mixture duging pile penetration with discrete element analysis
摘要
Abstract
Soil and rock mixture is a special engineering geological material with the non-homogeneous , non-continuous and non-linear mechanical characteristics .In the penetration process of pile ,the rock con-tent has obvious influence on its bearing capacity .In this paper ,we use spherical particles to simulate soil material ,and irregular overlapped clumps to model the rock rubble with Discrete Element Model (DEM ) .T he bearing capacity of pile is obvious different under various rock contents .T he resistance of high rock content is much higher than that of low rock content .Moreover ,the fluctuation of resistance during the penetration process is more obvious under high rock content condition .The influence of rock content on bearing capacity of pile is discussed based on the distribution of inter-particle force chains on micro scale .It is effective to analyze the macroscopic mechanical behaviors of soil and rock mixture with discrete element method ,especially to determine its mechanical characteristics under complex engineering conditions .关键词
土石混合体/压桩贯入/承载力/离散元模型/含石量Key words
soil and rock mixture/pile penetration/bearing capability/discrete element model (DEM )/rock content分类
建筑与水利引用本文复制引用
季顺迎,赵金凤..含石量对土石混合体压桩承载力影响的离散元分析[J].计算力学学报,2014,(5):596-602,7.基金项目
国家重点基础研究发展规划（2010CB731502）；国家自然科学基金（41176012）资助项目． （）
