工程地质学报2018，Vol.26Issue(2)：520-527,8.DOI:10.13544/j.cnki.jeg.2017-108
基于改进Harris函数的岩石统计损伤软化模型
IMPROVED HARRIS FUNCTION BASED STATISTICAL DAMAGE SOFTENING MODEL FOR ROCKS
摘要
Abstract
In order to reflect the whole process of rock deformation,the Harris function is improved.The microunit strength of rock is supposed to obey the improved Harris probability density distribution.The continuum damage theory is combined and the correction of damage variable is considered.As a result,statistical damage softening model of rock is established.The YSJ-01-00 rock triaxial creep testing machine is used to carry out conventional triaxial compression test of red mudstone.Sensitivity of model parameters is analyzed using test data of red mudstone.The physical meanings of the model parameters are described and the expansion process of cumulative damage is analyzed.Test data of monzonitic granite and sandstone in related literatures are used and the test data of three kinds of rock materials are verified using the model of this paper.Constraint range of initial damage coefficient is given.Finally,the rationality and applicability of the model are proved by comparing the experimental curves and theoretical curves of three kinds of rock materials.关键词
岩石/统计损伤/微元强度/Harris函数/软化模型Key words
Rock/Statistical damage/Micro-unit strength/Harris function/Softening model分类
建筑与水利引用本文复制引用
黄海峰,巨能攀,李路,肖金武,李萌,白洁,卢向涛..基于改进Harris函数的岩石统计损伤软化模型[J].工程地质学报,2018,26(2):520-527,8.基金项目
国家自然科学基金项目(41372306)资助. （41372306）
