土石混合体压缩性三维颗粒力学研究  

Study on Three-dimensional Particle Mechanics of Compressibility of Soil-rock Mixture

作　　者：陈晓雪 Chen Xiaoxue(East China Electric Power Design Institute Co.,LTD.,Shanghai Electric Union Engineering Testing Co.,LTD.,Shanghai 200331,China)

机构地区：[1]华东电力设计院有限公司上海电联工程检测有限公司,上海200331

出　　处：《黑龙江科学》2025年第6期47-51,共5页Heilongjiang Science

摘　　要：土石混合体是一种以碎石、卵石为集料,砂土、粘土为充填料的特殊岩土结构物,既有自然生成特点,也有人为制造特点,与均质岩土结构物有很大的不同。针对某机场高填土中广泛使用的土石混料问题,对土石混料试件在二维颗粒流序列中侧限压缩实验进行数值模拟研究,对比分析不同级配的土石混料试件在侧限压缩过程中的微结构特征和力学、物理特性,通过对侧限压缩模型的最大和压缩后的孔隙体积比的对比,探讨填料含量对土混合料结构性能的影响,如骨架效应,给出推荐的填料土混合料含量范围,为应用颗粒流法提供参考。Soil-rock mixture is a kind of special geotechnical structure with gravel and pebble as aggregate,and sand and clay as fillers.It has both natural and man-made characteristics,and is very different from homogeneous geotechnical structure.Aiming at the problem of soil-rock mixture widely used in high-fill soil of an airport,the study conducts numerical simulation research on the confined compression experiment of soil-rock mixture specimens in two-dimensional particle flow sequence;compares and analyzes the microstructure characteristics,mechanics and physical properties of soil-rock mixture specimens of different levels during the confined compression process.By comparing the maximum of the confined compression model with the compressed pore volume ratio,the study explores the effect of filler content on the structural properties of soil mixture,such as skeleton effect;and recommends the content range of filler soil mixture,which provides reference for the application of particle flow method.

关 键 词：土石混合体 颗粒力学 结构性 含石率 

分 类 号：TU521[建筑科学—建筑技术科学]