摘要
以光滑节理模型为基本模型,以剪切试验作为宏观和细观参数测试方法,通过七因素三水平的正交试验设计,通过方差分析研究了细观参数对宏观参数的影响。结果表明粘聚力C主要由光滑节理摩擦系数控制,剪切模量Es主要受到光滑节理切向刚度的影响,光滑节理摩擦系数是内摩擦角φ的显著性影响因素;并根据方差分析结果,拟合了光滑节理模型宏细观参数的回归公式,为细观参数的标定提供了依据。
In this paper,the smooth joint model is used to design the orthogonal shear design with seven factors and three levels for macro and micro-parameters.The influence of mesoscopic parameters on macroscopic parameters was studied by means of variance analysis.The results show that the cohesive force C is mainly controlled by the friction coefficient of the smooth joint,the shear modulus Es is mainly affected by the tangential stiffness of the smooth joint,and the friction coefficient C of the smooth joint is the significant factor affecting the Angle of the internal frictionφ.According to the results of variance analysis,the regression formula of macro and meso parameters of the smooth joint model is fitted,which provides a basis for the calibration of mesoscopic parametersmeso parameters.
作者
王观群
张拥军
王盛
宋宸
刘德金
WANG Guanqun;ZHANG Yongjun;WANG Sheng;SONG Chen;LIU Dejin(School of Civil Engineering Qingdao University of Technology,Shandong Qingdao 266033,China)
出处
《低温建筑技术》
2020年第10期107-111,共5页
Low Temperature Architecture Technology
基金
国家重点研发计划专项子课题(2018YFC1505300-1.4)。
关键词
颗粒流
光滑节理模型
正交试验
剪切试验
宏细观参数
particle flow code
smooth joint model
orthogonal experiment
shearing test
macro and meso parameters
