球形颗粒接触破碎试验  

Contact Crushing Test of Spherical Particles

作　　者：肖玲君 Xiao Lingjun(Jiuquan Road Development Center of Gansu Province,Jiuquan,China)

机构地区：[1]甘肃省酒泉公路事业发展中心,甘肃酒泉

出　　处：《科学技术创新》2023年第8期128-131,共4页Scientific and Technological Innovation

摘　　要：目前对于粗粒土颗粒接触破碎性质的研究,多集中在单点接触的情形,少有对多点接触情形下颗粒破碎特性的探讨。而实际粗粒土堆体中颗粒间大多是以多点接触的形式存在。本文利用石膏试样模拟粗粒土颗粒进行单点和三点接触情形下的破碎模型试验,研究球形石膏颗粒在单点和多点接触情形下的破碎特性,比较单点和多点接触破碎特性的异同,并总结不同侧向接触力条件下颗粒的破碎规律。At present,the research on the contact crushing properties of coarse grained soil particles is mostly concentrated in the case of single point contact,and few studies on the particle crushing properties in the case of multi-point contact.However,most of the particles in the actual coarse-grained soil pile exist in the form of multi-point contact.In this paper,gypsum samples are used to simulate the crushing model tests of coarse grained soil particles under single and three-point contact conditions,to study the crushing characteristics of spherical gypsum particles under single and multi-point contact conditions,to compare the similarities and differences between single and multi-point contact crushing characteristics,and to summarize the crushing laws of particles under different lateral contact forces.

关 键 词：粗粒土 颗粒破碎 多点接触 侧向力 破坏荷载 

分 类 号：TU45[建筑科学—岩土工程]