岩土力学2009，Vol.30Issue(7)：1960-1966,7.
粗粒土的破碎耗能计算及影响因素
Measurement of breakage energy of coarse granular aggregates
摘要
Abstract
Particle breakage of coarse granular aggregates changes its structure directly, influencing its dilatancy and friction angle. In the course of shearing, normal stress and shear stress do work on volume strain and shear strain. This energy is transformed into particle elastic energy storage, particle friction energy consumption, work done by particle dilatancy and particle breakage energy. The accurate measurement on breakage energy of coarse granular aggregates in the course of shearing aims that it provides a method to analyze the particle breakage influence on constitutive relation in the perspective of energy, creating conditions for development of coarse granular aggregates constitutive relations considering particle breakage. The breakage energy of coarse granular aggregates in the course of shearing is calculated by analyzing the results of the coarse granular aggregates in triaxial compression test. The results indicate that the breakage energy during triaxial tests is mainly influenced by confining stress and friction coefficient.关键词
颗粒破碎/破碎耗能/摩擦系数/临界状态/临界状态线斜率/剪胀Key words
particle breakage/ breakage energy/ friction coefficient/ critical state/ criticl state line slope/ dilatancy分类
建筑与水利引用本文复制引用
贾宇峰,迟世春,杨峻,林皋..粗粒土的破碎耗能计算及影响因素[J].岩土力学,2009,30(7):1960-1966,7.基金项目
国家自然科学基金项目(No. 50479057)资助. （No. 50479057）
