长江科学院院报2018，Vol.35Issue(6)：102-106,5.DOI:10.11988/ckyyb.20170042
岩石统计损伤软化模型及其参数反演
Statistical Damage Softening Model for Rock and Back Analysis of Its Parameters
摘要
Abstract
On the premise of assuming that micro-unit strength obeys Weibull distribution,a statistical damage sof-tening model for rock is established based on the continuum damage theories to reflect the strain softening of rock. The model contains two undetermined coefficients,one of which can be determined by the peaks of stress-strain curves,and another depends on the micro-unit strength parameters.By analyzing the influence of the micro-unit strength parameters on the model,the model parameters are determined through optimized back analysis.On this basis,reasonable strength criterion is selected according to the micro-unit strength parameters;hence the low preci-sion of solving model parameters by traditional methods are overcome.Furthermore,the correctness and rationality of the proposed method are verified by conventional triaxial compressive test of red-bed mudstone on YSJ-01-00 rock triaxial creep testing machine.关键词
岩石力学/统计损伤/微元强度/Weibull分布/反演Key words
rock mechanics/statistical damage/micro-unit strength/Weibull distribution/back analysis分类
建筑与水利引用本文复制引用
黄海峰,巨能攀,蓝康文,李萌,孔伟,郭露遥..岩石统计损伤软化模型及其参数反演[J].长江科学院院报,2018,35(6):102-106,5.基金项目
国家自然科学基金项目(41372306) （41372306）
